Best Catch Can for Supercharged Base
I did say in this and/or in other threads about the same old topic, that venting to atmosphere will require more frequent oil changes. Every 1000 miles? No....no way. I also said I have an Rx can and I have a Mighty Mouse can on my truck. I did not have good luck with the RX can on my C7, had issues with it leaking, had to get a replacement drain valve and I am also not sure it didn't contribute to additional crankcase pressure, but that's a different topic. I also had a second Rx can on my old truck.
I do not run a vent to atmosphere can on my daily/truck. I pull a vacuum. My C7, as stated, is not a daily driver, and when it's driven....it's Driven. Oil gets hot and the VTA can keeps any and all anything out of my intake. I never said the LMR is the right choice for everyone all the time, it's not.
Again, if someone wants to make baseless claims, like the LMR can "is the same thing as a draft tube," I am going to call you out. That's not an attack, my friend. I never told him he is dumb and ugly.....that would be an attack. And even if I did say that, how much validity would it have seeing as I have no clue what he looks like or what his IQ score is.
What I see is an internet parts website which may or may not have a warehouse disparaging other vendors products with false claims backed by zero real world experience with the product. That's the problem in this thread.
There are no "winners" in threads like these. I don't work for a vendor or sell anything online. I've been in the auto industry a long time but have not and will not ask for anyone on this website's business because this is my passion and hobby, not a money making proposition for me. I answer all texts and email asking for help on tunes or other things regarding GM products here and on other forums for no reason other than to help out if I can.
Having a vendor that registered a year ago use copy/paste info from Google to tell people who may or may not know better that a product from a preexisting good reputation vendor that actually builds cars rather than just drop ships parts is going to be asked to prove his claims.....that has not been done and I doubt it will.
Sorry you feel the way you do but it doesn't change anything. BTW, all it takes to be a good standing member of the SAE is $85.....
If you cannot see that the pics LMR posted of the two hoses routed to the chin and venting to atmosphere are creating 2 draft tubes then there is not much point in further discussion here.
You like the LMR catch can and no discussion of its strengths or weakness by others will change your mind. Ok. Enjoy. I like that there are other vendors and products designed to work correctly on a street driven car.
Oh, and more frequent oil changes does not alleviate the problems with a vented to atmosphere system. The acid vapors and other combustion products stay in the engine and not swept out. Long term this leads to very dirty internals and other related problems. We can see this is of no concern to you. Ok, thats fine but it is to others, including GM and me.
I did say in this and/or in other threads about the same old topic, that venting to atmosphere will require more frequent oil changes. Every 1000 miles? No....no way. I also said I have an Rx can and I have a Mighty Mouse can on my truck. I did not have good luck with the RX can on my C7, had issues with it leaking, had to get a replacement drain valve and I am also not sure it didn't contribute to additional crankcase pressure, but that's a different topic. I also had a second Rx can on my old truck.
I do not run a vent to atmosphere can on my daily/truck. I pull a vacuum. My C7, as stated, is not a daily driver, and when it's driven....it's Driven. Oil gets hot and the VTA can keeps any and all anything out of my intake. I never said the LMR is the right choice for everyone all the time, it's not.
Again, if someone wants to make baseless claims, like the LMR can "is the same thing as a draft tube," I am going to call you out. That's not an attack, my friend. I never told him he is dumb and ugly.....that would be an attack. And even if I did say that, how much validity would it have seeing as I have no clue what he looks like or what his IQ score is.
What I see is an internet parts website which may or may not have a warehouse disparaging other vendors products with false claims backed by zero real world experience with the product. That's the problem in this thread.
There are no "winners" in threads like these. I don't work for a vendor or sell anything online. I've been in the auto industry a long time but have not and will not ask for anyone on this website's business because this is my passion and hobby, not a money making proposition for me. I answer all texts and email asking for help on tunes or other things regarding GM products here and on other forums for no reason other than to help out if I can.
Having a vendor that registered a year ago use copy/paste info from Google to tell people who may or may not know better that a product from a preexisting good reputation vendor that actually builds cars rather than just drop ships parts is going to be asked to prove his claims.....that has not been done and I doubt it will.
Sorry you feel the way you do but it doesn't change anything. BTW, all it takes to be a good standing member of the SAE is $85.....
sorry guys, Higgs is right here. If you want to say something does not work, you need to be d@mn well prepared to back up the claim with documented proof crediting your statement. Anything else is simply assumption based on your knowledge (or lack thereof) of how you "feel" a specific product functions or how good it does what it claims to do. Ant
Discovering that there may be long term issues with a non-sealed or vent to atmosphere can was a deal breaker (good thing it costs a lot), made me look into it more. In reading all CoSpeeds info, it helped me understand the point he was making (even though a little wordy and aggressive) it made sense. Your asking him if he has used or tested a system he does not believe works (Don't need to jump off building to know what will....) Thus you ask him for data and you provide none yourself! If your an engineer you understand what he is saying even though you don't like it, and see the down side of the LMR can.
No dog in fight for me yet... I would like to see if others have came to the same conclusions.
The tone of the thread is a little aggressive but its the internet... getting used to it. It was much better on this forum 10 years ago, when modding my C6Z. Still good info. just need to be thick skinned and put the filter on!
NWblue
If you cannot see that the pics LMR posted of the two hoses routed to the chin and venting to atmosphere are creating 2 draft tubes then there is not much point in further discussion here.
You like the LMR catch can and no discussion of its strengths or weakness by others will change your mind. Ok. Enjoy. I like that there are other vendors and products designed to work correctly on a street driven car.
Oh, and more frequent oil changes does not alleviate the problems with a vented to atmosphere system. The acid vapors and other combustion products stay in the engine and not swept out. Long term this leads to very dirty internals and other related problems. We can see this is of no concern to you. Ok, thats fine but it is to others, including GM and me.
First, let's be sure we know what a draft tube is....
A draft tube is basically a tube dangling from the valve cover to just above the road surface. Is that really what you think the LMR solution is? The only reason the tubes are routed there AFTER the baffled catch can is to alleviate some customers' concerns of smelling the vented gasses through the HVAC system. The LMR can is baffled and oil won't spill out the hoses or the filters if you have the old system. It is not a draft tube system at all. In fact, that is ridiculous.
And B, do I like the LMR can? Sure, for what it is meant to do, it is the best solution on the market. I did not have a wonderful experience with LMR getting the can and the right pieces for it to work, but again, that's another topic, so don't think I'm some LMR fanboy. They aren't perfect. But if you want something that does what no other crankcase cleanup/PCV system does on the market and that is keep 100% of the crankcase garbage out of your combustion chamber and intake manifold then the LMR unit is the best (and only afaik) out there. If you are ok with some of it getting by and into your intake as a compromise then use a regular catch can, by all means. The LMR unit is a no compromise product. It's not for everyone, and again, I never said it was.
Third, if it's a concern for you then don't use it. You seem way more interested in making sure everyone doesn't use it than I am in seeing that they do. I could not care less what catch can someone uses, but again, if you're going to make a point, be prepared to prove it.
Discovering that there may be long term issues with a non-sealed or vent to atmosphere can was a deal breaker (good thing it costs a lot), made me look into it more. In reading all CoSpeeds info, it helped me understand the point he was making (even though a little wordy and aggressive) it made sense. Your asking him if he has used or tested a system he does not believe works (Don't need to jump off building to know what will....) Thus you ask him for data and you provide none yourself! If your an engineer you understand what he is saying even though you don't like it, and see the down side of the LMR can.
No dog in fight for me yet... I would like to see if others have came to the same conclusions.
The tone of the thread is a little aggressive but its the internet... getting used to it. It was much better on this forum 10 years ago, when modding my C6Z. Still good info. just need to be thick skinned and put the filter on!
NWblue
Let's remember why it was even developed in the first place, for boosted applications creating positive pressure in the crank case and pushing oil out of the pcv lines into the intake or just creating leaks.....btw, what's the thread title again? The stock style pcv system is simply not enough for that. If you are stock or have regular bolt on mods, you don't need the LMR, it's super overkill.
I only get worked up when I smell bullsht. I don't think I have ever defended a product just based on "me liking it better" or as mentioned above, "because I bought one." I think I have bought one of them all.

Not to mention all this BS was started by coSpeed in the first place starting with post 13. He proceeds to tell everyone they are wrong (presumably because they didn't order one of his products)....and starts with me on post 27. Sorry, I'll fight about it.
Last edited by Higgs Boson; Jul 26, 2015 at 06:30 PM.
As for the rest of the hurt feelings mumbo jumbo, I offer a sincere apology for any that I caused, was never my intent. Yes I am new here but not new at all to the performance car world. Just having switched brands after many years on the other side of the fence. Issues and engineering principles are the same regardless.
It is unfortunate that a vendor with obvious technical knowledge and background on a subject at hand has offended so many with the way in which the information was presented. I did not see things that way but its obvious others did.
Based on the technical information presented on both forums, I have indeed made a decision on which system will be installed on my Z06.
The Best of Corvette for Corvette Enthusiasts
As for the rest of the hurt feelings mumbo jumbo, I offer a sincere apology for any that I caused, was never my intent. Yes I am new here but not new at all to the performance car world. Just having switched brands after many years on the other side of the fence. Issues and engineering principles are the same regardless.
It is unfortunate that a vendor with obvious technical knowledge and background on a subject at hand has offended so many with the way in which the information was presented. I did not see things that way but its obvious others did.
Based on the technical information presented on both forums, I have indeed made a decision on which system will be installed on my Z06.
I agree with you that the technical data presented was knowledgeable and also may have persuaded me away from a LMR set up which is what I was leaning towards for my build as my car will mostly be driven on the street and I will want reliability and longevity above performance. I just don't like the way said vendor has conducted their self in such a manner. I'm actually happy knowing that I may not have the need to purchase a LMR kit (considering their price point) and that my current RX dual valve catch can and RX clean side separator may in fact be the best solution for my goals. However, I will require more input and recommendation from qualified installers (most likely whatever Vengeance Racing tells me what they think is best for my application) before I make my final decision on which route I take. I'm not doubting coSpeed's technical knowledge, I mean he states that he is more than qualified on such a topic, however I will take the word of a well known builder such as Vengeance who lets their reputation speak for them rather than speaking for themselves.
How many bays do you have in your shop? How many cars have you had on your dyno? What system/software do you use to calibrate your engine builds?
And to those offended, I have no intent to offend, but it is difficult when so much accurate verifiable data is posed and one or two "bad apples" come in and start attacking w/out listing the data to back up there attacks. My apologies if this offends others, I did not throw the first punch, and turned the other cheek plenty. All I ask is to leave emotions aside, favoritism, etc. and look at factual, verifiable data.
One last thing, anyone with the road draft tube LMR, please remove those vent lines and inspect to see if there is any sign of oil as god particle claims. I cannot see how there would not be as so many complained when those oily vapors were vented into the engine compartment. Also, I go into great detail and provide the data and documentation because without this, I would be just another "keyboard warrior" claiming expertise just because "I said so" instead of actually backing up what I am sharing with reference material most can find and verify themselves.
Last edited by COSPEED; Jul 27, 2015 at 11:23 AM.
And for Vengeance, they do awesome work and are more knowledgeable than most.
Last edited by COSPEED; Jul 27, 2015 at 11:46 AM.
Been using the cans in question for years now. NOT just on the LT4 the LT1 14 Denali truck or my Jeep and they do keep the oil, water and other contaminates out see it every few weeks when I drain the cans.
People get emotional about what is on their car even if they just drive it on Sundays to the coffee house or the car wash. Mine are all drivers and I put a lot of miles on them do not care if it is my AMG or a truck which I leave Friday btw for the ranch in NM on Friday returning Sunday. Another 1200 round trip.. Lot's of miles show that they do work.
Don't like to post on threads where chest beating is going on about a product that I know works---never going to convince the other guy anyway so there is no point.
Last edited by Busa Dave; Jul 27, 2015 at 11:51 AM.
enjoy your day. ;-)
But if you want something that does what no other crankcase cleanup/PCV system does on the market and that is keep 100% of the crankcase garbage out of your combustion chamber and intake manifold then the LMR unit is the best (and only afaik) out there. If you are ok with some of it getting by and into your intake as a compromise then use a regular catch can, by all means. The LMR unit is a no compromise product. It's not for everyone, and again, I never said it was. not care less what catch can someone uses, but again, if you're going to make a point, be prepared to prove it.
My intakes are all clean as a whistle not to mention my SC on the LT4.
And for Vengeance, they do awesome work and are more knowledgeable than most.

Last edited by StingerBG; Jul 27, 2015 at 12:43 PM.
My intakes are all clean as a whistle not to mention my SC on the LT4.
no testing needed, there is no path into the intake with the LMR can, only paths out of the crankcase.
Last edited by Higgs Boson; Jul 27, 2015 at 12:46 PM.
As far as emissions go I do not care if the squirrels fall from the tree's when I drive by

What is the best setup to keep the engine clean. I'll be adding meth which should get rid of the coking and will change my oil every 2500 miles or so.
As far as emissions go I do not care if the squirrels fall from the tree's when I drive by

What is the best setup to keep the engine clean. I'll be adding meth which should get rid of the coking and will change my oil every 2500 miles or so.
LMR is a no brainer for boosted applications
Then an appropriate mighty mouse can (there are different options)
Here's the greatest irony of this thread.....Cars and trucks go hundreds of thousands of miles and the owner/driver has never heard of a catch can. We, the enthusiasts, are borderline maniacal about clean combustion, clean crankcases, clean exhaust tips, etc.
If you live in the normal world, every single one of us looks like a crazy person....the buyers, the sellers, the talkers and the listeners. We can make a case for this stuff to each other but there are millions more who don't care at all.
As far as emissions go I do not care if the squirrels fall from the tree's when I drive by

What is the best setup to keep the engine clean. I'll be adding meth which should get rid of the coking and will change my oil every 2500 miles or so.
Dude there are hundreds and hundreds of cars on the roads with LMR and Lashway breather setups that are essentially identical. I myself run the lashway can just because at the time they were the only vendor that offered the pop on connectors as apposed to welding the LMR fittings. Now of course LMR has the pop ons.
I can tell you the the lashway can has two filters on the exits of the cans and those filters do get dirty from oil fumes and reside. Which tells me there is no suction there. It is a pressure exit, not a suction. However there are filters there for this reason.
no testing needed, there is no path into the intake with the LMR can, only paths out of the crankcase.
As with the above it would make sense that the LMR Product would be strictly against Forum Rules as it is by definition illegal to operate on a public roadway.
The rule states: "Do not discuss, suggest, engage, or encourage any illegal activity on the forums. Linking to locations that deal with any such activity are also forbidden."
Just want to be clear that I do not advocate illegal modifications to the Emissions Control System and have not done so to my vehicle.
I guess if you had a LMR system and it was sold to you and was not marked for off road use only then you could sue them claiming they never told you but I am sure somewhere in the terms and conditions of the sale it mentions that...
In part the regulation states:
Definition of "Tampering"
Tampering is removing or making inoperable any system or device used to control emissions from a motor vehicle engine. The motor vehicle is defined as any self-propelled vehicle designed for transporting persons or property on a street or highway. The only exception to the tampering rule is the need to install a new certified emission control system or device that is equally effective in reducing vehicle emissions.
Tampering may include, but is not limited to:
- Removing the catalytic converter, air pump, and exhaust gas recirculation (EGR) valve, or doing anything to keep them from working properly, such as disconnecting vacuum lines and electrical or mechanical parts of the pollution control system.
- Adjusting any element of a car or truck's emission control design so that it no longer meets the manufacturer's specifications.
- Installing a replacement part that is not the same in design and function as the part that was originally on the vehicle.
- Adding a part that was not originally certified on the car, such as installing a turbocharger.
[14] This policy states that the EPA will not consider any modification to a certified configuration to be a violation of federal law if there is a reasonable basis that emissions are not adversely affected. A certified configuration is an engine or engine-chassis design that has been certified or approved by the EPA to meet certain emission standards prior to the production of vehicles with that specific design. Evidence of federally approved testing must be available upon request.Vehicle Sales
Texas law prohibits any person from selling, offering for sale, leasing, or offering to lease any vehicle not equipped with all emission control systems or devices in good operable condition. Violators are subject to penalties under the Texas Clean Air Act of up to $25,000 per violation. Buyers are advised to have the vehicle checked for all required emission control devices prior to purchasing a new or used vehicle.
A vehicle may not be legally sold if its original engine has been replaced with another certified engine but without the related emission control components. Tampering includes the failure to install the emission controls associated with an engine configuration.
Last edited by Busa Dave; Jul 27, 2015 at 03:13 PM.























