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Hey fella's, I just noticed this the other day. On my stock setup my boost gauge reads 10 psi around 7k rpm. Passengers have told me I hit 10 but I'm too busy paying attention to the road to look. I figured it was just the angle they were seeing the gauge at. So I gunned it and looked myself, sure enough I hit 10psi right before i shift out. Do you think I am really hitting 10 psi or is the gauge reading wrong?
2004 Evolution VIII cams-exhaust-tune
315whp 12.7@109
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Joined: Dec 2001
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Hard-core CEG'er
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Hard-core CEG'er
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i've heard that on vtech kits with the alternative pulley. . .
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Redneck Troll
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Redneck Troll
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The Vortech blow off valve is a preset 10 pound unit that usually varies from 8-10 pounds from what I've seen. Other variances in intake and exhaust mods change boost pressure too (usually they drop if done after the SC unit in the flow path). In short, you're fine and you have a good bypass valve...
http://www.bnmotorsports.com
"And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my CEG brothers. And you will know I am the Moderator when I lay my vengeance upon you."
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Joined: Sep 2002
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10-4 Thanks alot! 
2004 Evolution VIII cams-exhaust-tune
315whp 12.7@109
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Joined: Aug 2001
Posts: 976
Veteran CEG\'er
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Veteran CEG\'er
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I can't beleive that duratec's handle 10# of boost, most cars can only handle 5-7psi on stock guts, good to see the ole duratec is a tough ole mule!
I offer PnP Heads for all durtec's details at PnPheads.com or jesse@pnpheads.com for details.
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Joined: Sep 2002
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Hard-core CEG\'er
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man, I'm kinda itchin to see what kind of boost I'll hit with the other pulley? I probablly won't do it though, I have a feeling I'm on the threshold of blowing something up as it is. 
2004 Evolution VIII cams-exhaust-tune
315whp 12.7@109
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Joined: Jul 2002
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CEG\'er
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CEG\'er
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what is your current pulley size, and what were you thinking of changing it to??? hmmmmmmm, talking about boost 
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Redneck Troll
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Originally posted by BStoneMega:
man, I'm kinda itchin to see what kind of boost I'll hit with the other pulley? I probablly won't do it though, I have a feeling I'm on the threshold of blowing something up as it is.
The smaller pullies will not get you more boost unless your bypass is faulty, allowing higher than the 10 psi it's preset at. The smaller pulley will just bring on the boost sooner in the RPM range for your car. The smaller pullies can also be used to restore lost boost from adding things like an exhaust, ported intake or heads, or a 3L, etc... The most boost does not always mean the most power... By the way, you're about 20-30 HP from being on the edge of a really serious 2.5 SVT. There have been several in the 295 range...
http://www.bnmotorsports.com
"And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my CEG brothers. And you will know I am the Moderator when I lay my vengeance upon you."
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Joined: Sep 2002
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Originally posted by Faboo:
what is your current pulley size, and what were you thinking of changing it to???
hmmmmmmm, talking about boost
I don't even know what the pulley size is, whatever vortech gave me. I'm pretty sure there is a smaller one available though.
2004 Evolution VIII cams-exhaust-tune
315whp 12.7@109
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Joined: Sep 2002
Posts: 1,196
Hard-core CEG\'er
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So Bnoon, are you saying a catback exaust may not give me as much power as it would on a N/A engine? Also when I do put on a cat back I could actually lose boost?
2004 Evolution VIII cams-exhaust-tune
315whp 12.7@109
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