Limp mode causing a hassle - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Ajmalian · 01-11-2014, 03:41 PM

Hey guys...need a bit of help here...especially considering the fact that I don't understand a lot of the technical stuff despite the fact that my tuner explained it. I got my car up to 717hp on wheel with the help of 2.9L Whipple, GT9 cam, ported cylinder heads and forged internals.

My car is a 2010 SS, and after having my last mods done and after having gotten the car up to 717 from 608, I didn't realize what I was dealing with and like an amateur I hit the rev limit (which was programmed at 7100rpm) twice upon which the engine automatically went into limp mode. Switching the car off and back on got it back to normal however my rpm got restricted to 6200rpm. My tuner said a lot of technical stuff which I did not understand, however in short I did understand that GM ECU's for the Camaro tends to do that and what's annoying is that apparently it somewhat (don't quote me, I may have misunderstood) permanently locks itself at 6200 and does not easily allow you to retune it back to 7000+ rpm.

My tuner has said there is a solution however he does need some time to crack this.

Anybody have any idea what this is all about and if so, what is the solution to this problem? Because now at 6000rpm I'm making 660hp...I need to hit 6900 to make my 717 again

I look forward to you people's feedback.

Thanks in advance!!!

Matt @ FSP · 01-12-2014, 03:10 PM

The rev limiter does not put the car in limp mode. That sounds like either the P0068 airflow MAF/TPS correlation, or something else in the tune. It would not "reset" back to 6200RPM rev limiter, that is not correct..

You have HPtuners? email me the file.. Short of a mechanical issue, this seems like it is all in the tune. Also this is pretty amateur part of any big airflow tuning (FI/Big cube NA, etc.) so that should have been taken care of and does not need to be "cracked"

01-11-2014, 03:41 PM	#1
Ajmalian Drives: 2017 ZL1 and 2016 GMC Sierra Denali Join Date: Jul 2010 Location: Dubai, United Arab Emirates Posts: 248	Limp mode causing a hassle Hey guys...need a bit of help here...especially considering the fact that I don't understand a lot of the technical stuff despite the fact that my tuner explained it. I got my car up to 717hp on wheel with the help of 2.9L Whipple, GT9 cam, ported cylinder heads and forged internals. My car is a 2010 SS, and after having my last mods done and after having gotten the car up to 717 from 608, I didn't realize what I was dealing with and like an amateur I hit the rev limit (which was programmed at 7100rpm) twice upon which the engine automatically went into limp mode. Switching the car off and back on got it back to normal however my rpm got restricted to 6200rpm. My tuner said a lot of technical stuff which I did not understand, however in short I did understand that GM ECU's for the Camaro tends to do that and what's annoying is that apparently it somewhat (don't quote me, I may have misunderstood) permanently locks itself at 6200 and does not easily allow you to retune it back to 7000+ rpm. My tuner has said there is a solution however he does need some time to crack this. Anybody have any idea what this is all about and if so, what is the solution to this problem? Because now at 6000rpm I'm making 660hp...I need to hit 6900 to make my 717 again I look forward to you people's feedback. Thanks in advance!!!

01-12-2014, 03:10 PM	#2
Matt @ FSP Drives: 2011 Camaro SS Join Date: Dec 2012 Location: Bradenton, FL Posts: 2,610	The rev limiter does not put the car in limp mode. That sounds like either the P0068 airflow MAF/TPS correlation, or something else in the tune. It would not "reset" back to 6200RPM rev limiter, that is not correct.. You have HPtuners? email me the file.. Short of a mechanical issue, this seems like it is all in the tune. Also this is pretty amateur part of any big airflow tuning (FI/Big cube NA, etc.) so that should have been taken care of and does not need to be "cracked"