What boost levels should I see? - Ford Powerstroke Diesel Forum
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Old 04-04-2011, 05:49 PM
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What boost levels should I see?

I am curious...

Just purchased an 00 Ex and I put a Gryphon programmer from PHP, a MBRP 4" turbo back and (just this weekend) an AFE Stage II CAI on.

Post the Gryphon and exhaust, I saw 20 Lbs boost - I am running the box 80 HP tune that Billy said I should be good with on my truck. After the AFE CAI, I saw 21-22 Lbs on the gauge. Is this what I should be seeing?

I was looking through some posts and was reading some maintenance topics. I read about possible up pipe issues. I know I still have the foil on my truck and saw some threads for foil removal.

Could someone lead me to some info on what I should look for? Does my truck have a tendance to leak pressure from the intercooler? That is power lost if so.

Thanks in advance,
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Old 04-04-2011, 06:06 PM
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stock without a chip or programmer you should be able to hit 21-22 lbs of boost. with a chip you can hit 30-31 lbs in a hot tune. there are a few things to look at/for. first you will need to tighten the rod on the turbo. its the wastegate. it is set to dump boost at around 22 lbs of boost from the factory. youll need to tighten the rod for the turbo to not dump boost. you will need a boost fooler so the truck doesnt defuel when you get over 22 lbs of boost. the intake and i/c pipe boots if stock are probably leaking a bit also. some nice aftermarket boots will help in that department. and lastly the up pipes that connect to the back of your turbo are probably leaking. if you look where the pipes go into the collector which is the thing that is clamped to the back of the turbo you might see some black soot around the top of the pipes indicating a boost leak. you will probably need to address all of these to get max boost out of your stock setup. taking the foil off your i.c pipe doesnt help boost it just makes your truck's turbo a little louder.....
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