i have a stock pulley , just intake , header and exhaust , and i only boost at the most 10psi , i thought stock was twelve

 

i dont think so but if you have better intake you should maybe gain a half a pound lol. but youd have to upgrade stage kits to get more boost or crank that **** up in the computer.

ryan.

 

Are you looking at the boost gauge upon hitting the gas or at redline? You will get around 10psi instant boost and then build to 12.5 at redline (Maybe a bit less because you have the exhaust). Do you feel a power loss?

 

so go to the dealer , and have them look at it , could be the computer

at redline i get between nine and ten lbs. , and ya i have noticed a loss

 

Then yes, take it to the dealer. Either your ECU is commanding the boost bypass to open for some reason or something is mechanically wrong with the boost bypass.

 

ok thanks i will tomorow

 

doesnt heat affect the psi out put

 

Yeah, weather conditions and altitude etc. will affect the blowers output, but if he's feeling a power loss that wasn't there before then it's easier to just take it to the dealership. Plus other people have had similar problems with their bypass.

 

i know i had a problem with mine went from 12 lbs to 5 lbs it was the bypass valve....

 

you have a big exhuast that is why you are not boosting 12 pounds. you are making more efficent boost

 

If he feels a decrease in performance at high rpm then he needs to get it checked out. Sure with a bigger exhaust the peak boost will be slightly lower and you may notice it to be a little less quick off the line but you shouldn't feel a decrease in power up top you should make a little more power.

 

he never said his car felt slow he just said his car doesn't boost 12#'s i told him why

 

He said he gets between 9 and 10 psi at redline and noticed a loss in performance.

 

honestly he probably did lose performance beucase he does not need a 3" exhaust on a stock pulley

 

Idiots. When you open up the intake/exhaust it will show less boost on the gauge.

 

yes as i have been trying to say

 

he is losing like 2 lbs of boost between the intake and exhaust and the temp id say its all ok but thats jsut me

 

he is losing the boost beucase of less pressure in the manifold boost is not a measure of performance it is of pressure in you manifold

 

Did you not see where I said that the exhaust will cause a pressure drop in my first post moron? You need to stop being such a bitch and read what people have said before you open your mouth.

 

well i dont know it seemed like i noticed the lose just a little bit ago, ive had intake and exhaust for about 4 months

 

They are right about dropping psi due to increased flow which I had already mentioned. If you are running 9psi at redline and feel a noticeable loss in power in the powerband then something COULD be wrong (Especially since you said that you had your mods before this drop in power and pressure was noticed). If you were saying that you only noticed your car to be slower off the line then I wouldn't be as concerned with the issue.