When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Currently my build is running a P1X blower @ ~8psi. About to add catless headers and get the car on the dyno in the coming weeks. Just wanted to get a feel for those of you with a similar setup that decided to add meth injection and pulley down for more boost. The car already makes good power for the street and is not track driven. Is maintenance/refilling the meth system worth the hassle of adding it to the build in your opinion? For street use, how often do you typically have to top off the methanol (with a few spirited pulls every now and then)?
Another thing that I am thinking about is the potential resell of the car someday. I feel like it would be an easier sell with just the blower and headers, but explaining that the car needs the auxiliary fuel may be a turn off to some buyers, and the hassle of taking meth off of the car (uninstall, put the bigger pulley back on, retune, etc.) isn't appealing. Has anyone sold a car with this 3 mod setup? Any input on the subject is greatly appreciated.
Currently my build is running a P1X blower @ ~8psi. About to add catless headers and get the car on the dyno in the coming weeks. Just wanted to get a feel for those of you with a similar setup that decided to add meth injection and pulley down for more boost. The car already makes good power for the street and is not track driven. Is maintenance/refilling the meth system worth the hassle of adding it to the build in your opinion? For street use, how often do you typically have to top off the methanol (with a few spirited pulls every now and then)?
Another thing that I am thinking about is the potential resell of the car someday. I feel like it would be an easier sell with just the blower and headers, but explaining that the car needs the auxiliary fuel may be a turn off to some buyers, and the hassle of taking meth off of the car (uninstall, put the bigger pulley back on, retune, etc.) isn't appealing. Has anyone sold a car with this 3 mod setup? Any input on the subject is greatly appreciated.
I have sold 2 c7 with ecs blower, long tubes, meth set up. Both made around 700whp and sold within a few weeks. i would just top off the meth every time you fill up gas to be safe, thats what i did. It should last around 3 tanks but all depends on how heavy your foot is.
Last edited by "BoneStock"; Jul 3, 2018 at 04:28 PM.
Can you elaborate on that please? My impression is that if I add a pulley and make any more boost, the meth will be a requirement for those hp numbers. If I stay where I’m at currently boost wise and still add the meth I guess it’d just be a safety precaution so I never lean out.
If what I am thinking is correct you wouldn’t recommend adding the meth and pushing for a lot more power, only adding the meth onto the current conservative setup? Thanks for the replies!
I'm only at 6 psi with the A&A Si trim blower and I added meth for a few extra hp and safety. I'm at 610 to the wheels, most are saying over 700 you're really pushing the limits, so depends on how comfortable you feel and how soon until you need a rebuild. As far as filling it up, think people get way too carried away with that, like it's a huge ordeal. If you daily drive it and just do a few pulls here and there, it will easily last 2-3 weeks (at least it does for me and I don't baby it)
Can you elaborate on that please? My impression is that if I add a pulley and make any more boost, the meth will be a requirement for those hp numbers. If I stay where I’m at currently boost wise and still add the meth I guess it’d just be a safety precaution so I never lean out.
If what I am thinking is correct you wouldn’t recommend adding the meth and pushing for a lot more power, only adding the meth onto the current conservative setup? Thanks for the replies!
The reason the C7 becomes "dependent" on meth is to assist the stock fuel system / injectors above about 600 rwhp. Without doing a cam with increased fuel lobe % you need something else to supplement the stock high pressure system, and that is where meth helps us tremendously. It is not a big deal really, just fill the washer tank with meth every so often and test the system during routine maintenance checks of the car. No biggie at all honestly.
Anything over 600 wheel needs upgrades to the high pressure fuel system, LT4 injectors, LT4 pump, or meth. Or all 3
The reason the C7 becomes "dependent" on meth is to assist the stock fuel system / injectors above about 600 rwhp. Without doing a cam with increased fuel lobe % you need something else to supplement the stock high pressure system, and that is where meth helps us tremendously. It is not a big deal really, just fill the washer tank with meth every so often and test the system during routine maintenance checks of the car. No biggie at all honestly.
Anything over 600 wheel needs upgrades to the high pressure fuel system, LT4 injectors, LT4 pump, or meth. Or all 3
Solid explanation and very simply put C7&7. We also agree that it's not really a big deal at all! Gosh, we've gone WEEKS without filling up our meth tank and were perfectly fine. Understandably, most of the time we aren't heavy footed on the accelerator minus the occasional fun light to light run. Now that we are about to be back in the game on our new setup, we went past the "all 3" approach.. lol. We did the individual 9 injector port injection methanol route, LT4 pump, FIC injectors, a secondary $5K fuel pump / fuel lines / tapped gas tank setup and of course the 34% increased fuel lobe on our TS&P cam.
Originally Posted by Jaycajun
Using it to cool the IATs down from 120-140 to 60-80 in two seconds is what I love about meth....not a fan of using it for fuel
Definitely a benefit Jaycajun. Arguably, some would say THE most important benefit of methanol.
PROS:
It works !!! It Suppresses Detonation
Reduces Intake Air Temp
Provides the ability to Run Higher Boost Pressure - or Provides a Safety Margin w Baseline Boost Pressure
CONS:
If the Pump Fails or a Line Clogs or if you run out of Methanol - and You're Tune Requires Methanol - Your Motor May Well Go Bang
Getting Methanol can be Tricky
You have to remember to fill the reservoir
Methanol Does Have a Tendency to "Eat Things" - so Maintenance of System is Required
A good System while not Hyperexpensive - Is a few $$.
The reason the C7 becomes "dependent" on meth is to assist the stock fuel system / injectors above about 600 rwhp. Without doing a cam with increased fuel lobe % you need something else to supplement the stock high pressure system, and that is where meth helps us tremendously. It is not a big deal really, just fill the washer tank with meth every so often and test the system during routine maintenance checks of the car. No biggie at all honestly.
Anything over 600 wheel needs upgrades to the high pressure fuel system, LT4 injectors, LT4 pump, or meth. Or all 3
Plus I have always has the guy that makes these in FLA rebuild my motor on the meth after a good 2 years with it on the car. That stuff is nasty crap on rubber & metal parts. Robert
Can you elaborate on that please? My impression is that if I add a pulley and make any more boost, the meth will be a requirement for those hp numbers. If I stay where I’m at currently boost wise and still add the meth I guess it’d just be a safety precaution so I never lean out.
If what I am thinking is correct you wouldn’t recommend adding the meth and pushing for a lot more power, only adding the meth onto the current conservative setup? Thanks for the replies!
Yes on a fully stock motor like the lt1 with no cam & lt4 pump if me I would only add the meth & have the brake out sensor on the car & have the meth on the car for not much rwhp gain & more for lowing the IAT's & safety on just what the car made. If you go the other way hope you have one hell of a good tuner if something happens, if you dont you will be rebuilding a motor..
Thanks for the replies. Definitely opens my eyes to a few things I hadn’t considered. We don’t have many speed shops in my area so hearing about the how critical tuning with meth is makes me nervous. I had a hard enough time getting someone local to put my procharger on. Maybe I’ll just throw the headers on and leave well enough alone....
Thanks for the replies. Definitely opens my eyes to a few things I hadn’t considered. We don’t have many speed shops in my area so hearing about the how critical tuning with meth is makes me nervous. I had a hard enough time getting someone local to put my procharger on. Maybe I’ll just throw the headers on and leave well enough alone....
I would not add headers without meth. Either both or neither in my opinion. That's my next step. Meth tuning is not necessarily that critical. Meth tuning for power is.
I would not add headers without meth. Either both or neither in my opinion. That's my next step. Meth tuning is not necessarily that critical. Meth tuning for power is.
Why wouldn’t you? Would the headers not make the car “safer” to run without meth due to them reducing the boost a bit by freeing up exhaust flow and tipping the air/fuel back towards richer?
Why wouldn’t you? Would the headers not make the car “safer” to run without meth due to them reducing the boost a bit by freeing up exhaust flow and tipping the air/fuel back towards richer?
They would increase power by increasing airflow. Idk. Just from reading here. I guess if the car is tuned for safety.
Last edited by BrunoTheMellow; Jul 8, 2018 at 12:10 PM.
The reason the C7 becomes "dependent" on meth is to assist the stock fuel system / injectors above about 600 rwhp. Without doing a cam with increased fuel lobe % you need something else to supplement the stock high pressure system, and that is where meth helps us tremendously. It is not a big deal really, just fill the washer tank with meth every so often and test the system during routine maintenance checks of the car. No biggie at all honestly.
Anything over 600 wheel needs upgrades to the high pressure fuel system, LT4 injectors, LT4 pump, or meth. Or all 3
Using it to cool the IATs down from 120-140 to 60-80 in two seconds is what I love about meth....not a fan of using it for fuel
[/QUOTE]
100% agree with this! This is also how my car is setup. I have Texas speed cam with +32% fuel lobe and lt6 fuel system, long tubes, no kitties, and it makes around 10psi. Car is making a conservative 700whp and could easily make more with a few degrees of timing. When I originally purchased this kit I thought I would be running boost juice that half water stuff it’s almost the same as all weather wiper fluid. NOPE straight M1 from voice racing 100% methanol. Dual 15 nozzles.
Last edited by RobBeacon; Nov 14, 2023 at 01:38 PM.
Methanol Injection Pros/Cons
!["BoneStock"'s Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%23539cb8' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>"</text></svg>)
Plus I have always has the guy that makes these in FLA rebuild my motor on the meth after a good 2 years with it on the car. That stuff is nasty crap on rubber & metal parts. Robert
