is something wrong?
Thread Starter
Racer
Joined: Apr 2011
Posts: 411
Likes: 1
is something wrong?
Procharged 2007 Ls2
Z06 Exhaust ( Manifold To Tips)
4.25 Pulley, Boost Gauge Reads 7.5Psi
Peak Hp, 478
Falls On Its Face At 5800Rpm.
Tuner Thinks The Stock Ls2 Maf Is Maxed Out.
Was Expecting Around 525rwhp
Z06 Exhaust ( Manifold To Tips)
4.25 Pulley, Boost Gauge Reads 7.5Psi
Peak Hp, 478
Falls On Its Face At 5800Rpm.
Tuner Thinks The Stock Ls2 Maf Is Maxed Out.
Was Expecting Around 525rwhp
Thread Starter
Racer
Joined: Apr 2011
Posts: 411
Likes: 1
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Burning Brakes
Joined: Aug 2008
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From: Katy/Houston Texas
What procharger is it? My stock ls2 with cam, meth and headers made 700 with a 4.25" pulley on a d1sc. It's an m6 so I would expect it to be higher any way, but it made 535 with just headers and a 4.5" pulley.
Instructor
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From: Roseville Michigan
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Burning Brakes
Joined: Apr 2007
Posts: 972
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From: Dawsonville, GA
I'm still running my stock 2005 LS2 MAF at 636rwhp.
Thread Starter
Racer
Joined: Apr 2011
Posts: 411
Likes: 1
SpoKe With Another Local Tuner, (Thinks I Should Be Closer To 550Rwhp), Not Sure If THe Guy Who Tuned It Is Familiar With How To Scale The MAF Tables.
Since I Already Have The Ls3 Intake Tube, I'm Going To Use ThE Ls3 Maf Sensor. (What's Another $75),
I Will Probaby End Up Taking It Somewhere Else. But Going To See If He WilL Make It Right First.
Since I Already Have The Ls3 Intake Tube, I'm Going To Use ThE Ls3 Maf Sensor. (What's Another $75),
I Will Probaby End Up Taking It Somewhere Else. But Going To See If He WilL Make It Right First.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
Definitely low on power. You should be seeing way more then 7.5 psi with a 4.25" pulley on a D1sc, especially with stock manifolds. Must have a pretty good boost leak somewhere for starters... Or the belt is slipping.
My stock LS6 with a 4.38" pulley would make 10-11 psi with headers.. 622hp...
I would pressure up your system and go over everything with soapy water and check for leaks... Check for belt slip.. Then go from there.
With a 4.25 pulley I would expect you to see 11-12 psi, especially on stock manifolds. Unless you're at high altitude or something.
My stock LS6 with a 4.38" pulley would make 10-11 psi with headers.. 622hp...
I would pressure up your system and go over everything with soapy water and check for leaks... Check for belt slip.. Then go from there.
With a 4.25 pulley I would expect you to see 11-12 psi, especially on stock manifolds. Unless you're at high altitude or something.