Extreme loss of power at 7100 rpm. Help needed!

Mkai0 · 01-29-2012, 07:08 AM

I'd have to agree with with what Zat Zuma is saying about checking for boost leaks. I've already had to retighten some of my couplers on my GTM Stage 1 kit. What kind of AFR's #'s are you getting?

awkwardturtle · 01-29-2012, 07:21 AM

I know of a guy on another car platform that had a very similar problem - supercharged setup, in the upper revs power just dropped off for no obvious reason. Turned out a plastic section of his intake was bending shut from the pressure at the upper RPMs, closing off the intake somewhat. I doubt that's your problem, but it's another thing to look for. Sounds like it has to be some sort of mechanical problem because anything tune-related that would cause that seems like it'd be fairly obvious to the tuner.

kosstick · 01-30-2012, 09:28 AM

Quote:

Originally Posted by awkwardturtle

I know of a guy on another car platform that had a very similar problem - supercharged setup, in the upper revs power just dropped off for no obvious reason. Turned out a plastic section of his intake was bending shut from the pressure at the upper RPMs, closing off the intake somewhat. I doubt that's your problem, but it's another thing to look for. Sounds like it has to be some sort of mechanical problem because anything tune-related that would cause that seems like it'd be fairly obvious to the tuner.

Hmm, that is very interesting, only reason I think it is software related is that it always happen 7100 rpm..Like the train is NEVER Late lol.

01-29-2012, 07:08 AM	#1 (permalink)
Mkai0 Base Member Join Date: Dec 2010 Location: Somewhere in Texas Posts: 209 Drives: 2008 G35 Sedan Rep Power: 16	I'd have to agree with with what Zat Zuma is saying about checking for boost leaks. I've already had to retighten some of my couplers on my GTM Stage 1 kit. What kind of AFR's #'s are you getting? __________________ Eibach, Tanabe, Blitz, Vertini, GTM stage 1.5 SC, Aquamist, Invidia, Alto built 5AT, Edge Racing, Racelogic, GTM driveshaft, 440 whp in 101F TX heat..

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01-29-2012, 07:21 AM	#2 (permalink)
awkwardturtle Base Member Join Date: Nov 2011 Location: minnesota Posts: 98 Drives: 07 Civic SI Rep Power: 15	I know of a guy on another car platform that had a very similar problem - supercharged setup, in the upper revs power just dropped off for no obvious reason. Turned out a plastic section of his intake was bending shut from the pressure at the upper RPMs, closing off the intake somewhat. I doubt that's your problem, but it's another thing to look for. Sounds like it has to be some sort of mechanical problem because anything tune-related that would cause that seems like it'd be fairly obvious to the tuner.