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So my shop tried contacting Edelbrock for calibration ideas for the start up. Edelbrock's tune expert is on vacation until next week. I think the shop I'm working with is running out of ideas but is willing to keep working on it. Pretty soon the snow will fly in michigan and I will put it up in storage and revisit the problem in the spring. Maybe there will be more insight out there by then. My shop has done three LS3s and say there have been no issues. My LS2 is there first.
What shop are you working with? What issues are you having?
It seems the E40 & E38 have a 67.5lb/min limit and things have to be scaled to get around that issue. If the other guys are doing a SD tune, that might be the reason they are not having issues. I think the newer ECMs don't have that restriction.
I just asked about cylinder volume. On the stock tune, the CV is .75 .75 X 8 = 6L or 364CI. In the tune that I using from Edelbrock, the CV is set to .56 or 4.48L I asked about that and the answer is a scaling down of 25% so the lower CV is correct.
Why hasn't Edelbrock stopped selling these units until the tuning is fixed?
The OP for this thread is using a "custom tune" from someone of his choice....not the Edelbrock tune. The problem is in the tune. Why would you think Edelbrock should stop selling superchargers due to a calibration created by someone else which obviously isn't well sorted out? I don't follow your logic.
I recently installed an Edelbrock e-force SC on my 2007 LS2. I did not opt for the optional fuel pump kit. Power produced on the dyno is 506HP and 460ft lb. Issue I'm having is that on cold start up, the engine revs by itself from 500rpm to as much as 1500rpm for 15-20 sec. I took it back twice for recalibration and this is substantially better. In fact when I first got it the engine actually tried to go to zero rpms and stall and as high as 2500 for over one minute. Once the 15-20 sec goes by, the car seems to run perfect. One more note is that the problem seem worse if the car sits there for a few days than if I run it the night before and then start it in the morning. Is anyone else seeing this sort of issue? Any ideas?
A couple of questions....what drove your decision to have the car custom tuned? Have you tried installing the calibration that came on the handheld tuner with the kit?
Last edited by Motorhead-47; Nov 28, 2010 at 05:29 PM.
Wow I can't believe the e force had these tuning issues
I am doing my duedillegence on supercharging my c6 and based on this thread it is looking like the E Force is out!
We have always started with the Edelbrock tune as there are some parts of the tune that were
not readily visible with Efi Live until we had some parameters added to our software.
We've never seen the behavior you mentioned and they have always run well.
All of the projects we've done here were completely re-tuned for delivery and worked great with no behavioral issues at all.
I believe that the very early Edelbrock calibrations were done by a different calibrator than the current fella.
Some points to be aware of.... The SCT tool that deploys the Edelbrock tune can not change the operating system of the vehicle.
Which means, you can have the EARLY or LATE GM tune in the car and it just "patches" itself to what's
already in the car. Also, the SCT TOOL can not perform the MAF patch which we use to avoid having
to "scale the tunes"... This is VERY important when you have an A6 transmission.... Make sure your tuner is AWARE OF IT!
If not, your trans is at risk.
Also, did you purchase the Edelbrock as a COMPLETE KIT or did you (or your installer) buy the unit and separately supply the injectors?
Injectors can cause the problems you're having.
Other points to be aware of.... Many of these calibrations are "MAF TUNED" and do not make use of the VE table in the tune...
You can get very different results from different tuning methods and still achieve the same HP numbers....
If anyone has questions, please leave them here.
If any of you are in Florida, I'll be in Orlando from the 9th thru the 12th of December if you need me to look at your tunes.
Wow I can't believe the e force had these tuning issues
I am doing my duedillegence on supercharging my c6 and based on this thread it is looking like the E Force is out!
Absolutely NOT!
Like I mentioned in the post above....it's ENTIRELY RELATED to the TUNE and/or THE TUNER.
The Edelbrock SUPERCHARGER is FIRST CLASS ALL THE WAY.
The OP for this thread is using a "custom tune" from someone of his choice....not the Edelbrock tune. The problem is in the tune. Why would you think Edelbrock should stop selling superchargers due to a calibration created by someone else which obviously isn't well sorted out? I don't follow your logic.
Hey Motorhead....I'm trying to understand his post in the first place. He appears to have no "skin in the game", having only owned NA C6s and apparently doesn't currently even own a c6. He seems to be just an antagonist at this point.... but I may be wrong
Last edited by ghostmech; Nov 29, 2010 at 06:56 AM.
The OP for this thread is using a "custom tune" from someone of his choice....not the Edelbrock tune. The problem is in the tune. Why would you think Edelbrock should stop selling superchargers due to a calibration created by someone else which obviously isn't well sorted out? I don't follow your logic.
Originally Posted by Motorhead-47
A couple of questions....what drove your decision to have the car custom tuned? Have you tried installing the calibration that came on the handheld tuner with the kit?
Originally Posted by BillB3672
Wow I can't believe the e force had these tuning issues
I am doing my duedillegence on supercharging my c6 and based on this thread it is looking like the E Force is out!
Did you read the above comments before you posted???? This is not an E-Force issue but a custom tune issue that has nothing to do with the Edlebrock tune that is offered with their SC package.
Elmer, Some time back I provided you with a calibration from the same year model car in EFILive format. I sent you that calibration knowing that it runs perfectly on the original owner's same year model car and continues to do so. Have you installed that calibration and if so, what were the results? If you haven't, bad on you. If you have and your results were the same, IMHO you need to look beyond the calibration and look closely at your physical install for your issues. Personally, I would be highly suspect that at least one of those 8 head unit to cylinder o-ring type gaskets has been folded over during the install causing a leak.
I'm in the north suburbs of Detroit. My issue got a little worse last evening. I started the car cold after work and started to back out without letting it get through its little rev cycle. Got a check engine light and was a little difficult to restart for a minute or so. I plan to take it back to the shop again today.
Hate dropping names but RoadRebel aka Dr. Phil is close to you, so maybe try him. He is likely busy but worth the try... You will be really hard pressed to find a better tuner within a reasonable distance of you!
Also look for vacuum leaks and obvious install errors as tuning is not a magic fix for mechanical/install errors, nor will it ever be.
My Edelbrock installer is an Edelbrock dealer and says he's using the base Edelbrock tune. He goes on to say that he's had no issues with the LS3 installs he's done. Mine was the first LS2. Chuck Cow says that his shop has done many installs. How many have been LS2s and used the Edelbrock tune? Is there anything specific with the LS2s that I should discuss with my installer / tuner?
My Edelbrock installer is an Edelbrock dealer and says he's using the base Edelbrock tune. He goes on to say that he's had no issues with the LS3 installs he's done. Mine was the first LS2. Chuck Cow says that his shop has done many installs. How many have been LS2s and used the Edelbrock tune? Is there anything specific with the LS2s that I should discuss with my installer / tuner?
Tell me where you live......or give me a call today.
Last night I loaded the Edelbrock tune into an 06 A6 car and had no problems.
There is a very small Vacuum port behind the large port where the BRAKE BOOSTER attaches to the plenum.
It's very hard to see and nothing really goes there...It should be plugged and I've seen it open when the units arrive.
That would cause that problem and mess up the rest of the tune badly causing it to have to be re-tuned when repaired.
Take off the cover and use a mirror below the ports to check the rear port.
My Edelbrock installer is an Edelbrock dealer and says he's using the base Edelbrock tune. tune?
In the 3rd post you say it has a custom tune, now it has the canned tune? If it is the canned tune have your installer update the programmer to the latest version that is on the Edelbrock website and see if that fixes your issues.
Elmer, Some time back I provided you with a calibration from the same year model car in EFILive format. I sent you that calibration knowing that it runs perfectly on the original owner's same year model car and continues to do so. Have you installed that calibration and if so, what were the results? If you haven't, bad on you. If you have and your results were the same, IMHO you need to look beyond the calibration and look closely at your physical install for your issues. Personally, I would be highly suspect that at least one of those 8 head unit to cylinder o-ring type gaskets has been folded over during the install causing a leak.
My two cents worth
Just to keep answers posted to questions. I examined the tune and found:
It is for a 2006 LS2 and it is for an Automatic and it is a SD tune. It also is a different OS. I cannot use the tune as it sits but I can read the tune and manually copy and paste information over top of the stock M6 tune I have. There are spots where I can't do a straight data transfer and have to extrapolate data into field differences in the two tunes.
There is a strong effort being put into this to get it to run correctly. I don't want to bad-mouth a good product because of a complicated tuning issue. I may still have an install or hardware issue. The search goes on.
Right now, the diving RPM problem is gone. I have no idling or driving issues. My only issue with the car is the dieseling that happens at shutdown and it is being pursued by some very skilled folks.
My routine is get a tune, load it, drive the car and scan it and give the tuner the results. I'm really getting good at slapping that ECM around with new instructions
Just to keep answers posted to questions. I examined the tune and found:
It is for a 2006 LS2 and it is for an Automatic and it is a SD tune. It also is a different OS. I cannot use the tune as it sits but I can read the tune and manually copy and paste information over top of the stock M6 tune I have. There are spots where I can't do a straight data transfer and have to extrapolate data into field differences in the two tunes.
There is a strong effort being put into this to get it to run correctly. I don't want to bad-mouth a good product because of a complicated tuning issue. I may still have an install or hardware issue. The search goes on.
Right now, the diving RPM problem is gone. I have no idling or driving issues. My only issue with the car is the dieseling that happens at shutdown and it is being pursued by some very skilled folks.
My routine is get a tune, load it, drive the car and scan it and give the tuner the results. I'm really getting good at slapping that ECM around with new instructions
Elmer
Tuning a car is a tedious task. Up until I purchased my ZR1 I tuned all my own cars; from NA to Cams to FI. Getting a tune just right where it’s predictable, reliable in all weather conditions, maintains drivability, and still puts down good power is harder than most people think. I can usually tell when a shop is BS’ing their tuning skills, because it only takes them 10-15 minutes to tune the car, then they pat themselves on the back for adding a cookie-cutter tune that’s down 50-100hp with all kinds of bugs.
I am glad to hear you drive the car for the testing and don’t log it while on a dyno; it makes a difference. Sounds like you have some heavy hitters on your team so be patient and it will work out.