2004 GTO M6 Procharged!
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On The Tree
Joined: Nov 2004
Posts: 143
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From: Macomb Township, MI
2004 GTO M6 Procharged! Well here is my first dyno session with the first production Procharger GTO system (7 PSI). I am VERY impressed to say the least!! I would like everyones input on how to possibly fix the trailing A/F at the end, I'm guessing the 38lbs injectors that came with the kit are probably maxed, followed by the fuel pump 
You guys think 60lbs will do the trick? hehe
You guys think 60lbs will do the trick? hehe Trending Topics
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Verdad Gallardo Thread Starter
On The Tree
Joined: Nov 2004
Posts: 143
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From: Macomb Township, MI
Nope 100% stock car, just with the Procharger. I need to get some good pics of the system overall I've got some install pics but those are for my Editorial so I cant really post them 
I've got some long tubes and an exhaust system here in boxes, that coupled with a tad more boost I'm looking for 500 RWHP hopefully, just need the fuel to support it.
I've got some long tubes and an exhaust system here in boxes, that coupled with a tad more boost I'm looking for 500 RWHP hopefully, just need the fuel to support it. 
TECH Apprentice
Joined: Jan 2004
Posts: 337
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From: Frisco TX (Dallas Area)
Hey, Chris, Tom K here. A link you might like and some assumptions for a general answer. 500 whp/.8 = 625 chp. bsfc @ .55 lb/hp for FI. Fuel rail pressure 57psi with the boost all in. Says 46.9 lb/hr static @ 43 psi test pressure is needed (80% duty cycle). I got all this at:
http://www.rceng.com/technical.htm#WORKSHEET
BTW, 625 chp at .55 bsfc = 207 liters/hr for the pump. HTH. Anyone else?
Just thought I'd add - 444whp/.85 drivetrain efficiency = 522 chp. With .55 bsfc that needs 175 lph supply and 38 lb/hr injectors at about 85% duty cycle. So, you're probably right about the fuel. Also, the injectors flow more with increased pressure, but only add as the square root of the psi increase. And the rule-of-thumb limit for injector fuel pressure is about 65 psi.
http://www.rceng.com/technical.htm#WORKSHEET
BTW, 625 chp at .55 bsfc = 207 liters/hr for the pump. HTH. Anyone else?
Just thought I'd add - 444whp/.85 drivetrain efficiency = 522 chp. With .55 bsfc that needs 175 lph supply and 38 lb/hr injectors at about 85% duty cycle. So, you're probably right about the fuel. Also, the injectors flow more with increased pressure, but only add as the square root of the psi increase. And the rule-of-thumb limit for injector fuel pressure is about 65 psi.
Last edited by TeeKay; Dec 28, 2004 at 12:52 PM.
Thread Starter
On The Tree
Joined: Nov 2004
Posts: 143
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From: Macomb Township, MI
Eh I'm not real worried about the bottom end, if it gets away from me I'll just put a 389 or a 421 in it or something I think I'll be ok at around 8 psi with headers and such we'll see 
I think I'll be ok at around 8 psi with headers and such we'll see