need more boost
Thread Starter
Racer
Joined: Jun 2006
Posts: 383
Likes: 1
From: harlan KY
need more boost
i currently am making 9.5 psi on my d-1procharger, and i am thinking of going alittle higher on boost. would my stock bottom end handle 12 psi. i am at 612 rwhp right now on 9.5. by the way car is a 2006 c6 m6 with 1 3/4 headers and full exhaust, meth, bov and 60# injectors.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
It's a "do you feel lucky" deal. Some do fine at well in excess of those numbers. Some shoot craps at less. You and your tuner have a lot to do with it too. If you're a mullet that routinely phuques things up.....Or if the guy tuning your car is a mullet....well, you get the picture. More also to do with whether you can afford the consequences. Not a fun game to play if a shattered motor, tranny, clutch, diff matters in the grand scheme of things.
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Thread Starter
Racer
Joined: Jun 2006
Posts: 383
Likes: 1
From: harlan KY
I cant remember what size pulley i have! i djust know that it makes 9.5 psi. at the track last friday night i had some belt slip issues. so i guess i will just go ahead and pulley down. i went from 537 hp at 7 psi to 612 hp on 9.5 hp so i guess i will be looking at about 687 on 12 psi. does the pulley have the sive written on it anywhere?
Pro
Joined: Nov 2011
Posts: 622
Likes: 17
From: Spring Texas
It will say pulley size on the pulley. Usually on the motor side on mine. Its probably a 4.68" I would guess. You should not have slip issues with that setup.
The Dallas Performance big mouth inlet is worth 25ish hp on a setup like yours.
The Dallas Performance big mouth inlet is worth 25ish hp on a setup like yours.
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
Will the Big Mouth fit under a stock hood?
Drifting
Joined: May 2008
Posts: 1,505
Likes: 7
From: Jacksonville FL
For the cost of the big mouth with filter and radiator cover it's almost not worth the cost. (I was interested in it myself) I would toss in a good blower cam and have a lot better performance.
Safety Car
Joined: Dec 2010
Posts: 4,150
Likes: 379
From: Detroit
Drifting
Joined: May 2008
Posts: 1,505
Likes: 7
From: Jacksonville FL
They have the filter on their site for $300 and the cover for $150 (personally I wouldn't want to cut my Procharger cover) and their advertised gains are 20-30hp. I know most get near 40-50hp but I'd rather go with a simple pulley swap and get that power but since the OP has belt slip issues and wants power I think a cam would definitely help out. Will gain power and if it's a proper blower cam it will also decrease the boost.
Safety Car
Joined: Dec 2010
Posts: 4,150
Likes: 379
From: Detroit
I did it last year. Gained 38rwhp, paid $275, and it wasn't much that needed to be cut. The stock Procharger setup is a restriction. I agree a cam is a must so is the big mouth intake and my sig is evidence of that.
Drifting
Joined: May 2008
Posts: 1,505
Likes: 7
From: Jacksonville FL
My current build is good to about 800hp but the clutch maxes out at that so I'm trying to keep it around 750. I've held off on the big mouth intake because the pistons and cam I have selected would give me a lower boost reading but make a ton more power than I can with stock parts. The big mouth would of pushed me 30-40hp higher than what I wanted to go. I'm probably going to trade off the price of the big mouth for a quality catch can instead and try to save the new engine from excess blow by oil.
For all out power hell yeah get that intake I've seen it make plenty of power on here. If you're concerned about boost pressure then spend the extra cash on a cam. Get a wider powerband and have less boost pressure to worry about.