05 Modded GTO Rev Limit Issue

[VetteNut]

I just completed some upgrades on an 05 GTO LS2 and have it tuned to where I'm realy happy with it. The only issue is that is seems that mostly if not only in 2nd gear, when you really put your foot into it, it's like a rev limiter (Fuel Cutoff) happens at 5k rpm. The rev limiter (Cutoff RPM vs. Gear)itself is set for 6600.

Mods:

Cam: 228/232 588/595 - 115
Heads: Stage 3 71cc
LSX Intake
42lb Injectors
ProCharger D-1SC running 7psi

Haven't dyno'd it yet but have idle, part, and mid throttle smooth and responsive. Only problem is as stated in 2nd gear.

Obviously I'm missing something but need some help figuring out what it is. I have Engine Torque vs. RPM vs. Gear set at the max (6046). All other torque settings maxed at 6046.

Thanks

[gtslow]

try this http://www.hptuners.com/forum/showth...hlight=limiter

[VetteNut]

Thanks much.

I was using v. 2.1.14. I just upgraded to v. 2.1.18 and the other parameters are there. They were not visible in the earlier version.

Thanks again.

[PBMFIsMe]

MAF Patch.

Happened on mine at ~6300 RPM....but it depends on when the car reaches 11,500Hz on the MAF.

Make sure you do a full write after you apply the patch to the tune file, otherwise it won't take effect.