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12-02-2014
I have a 3.5 pulley on my ported and polished charger. Have aftermarket intake and full exhaust minus headers. 1998 gtp
My boost gauge only reads 5 pounds maximum. My question is if that is a normal number for a pulley of that size and charger set up. Thanks
12-02-2014
Unplug the BBV solenoid and see what it reads on a WOT run, it will likely spike up much higher.
Stock psi is 6-7 if thats saying anything.
I'd worry about ping/knock without atleast a 3in downpipe on there.
12-02-2014
Pulley size is a little small with no exhaust mods. Got an Aeroforce or something similar?
12-02-2014
Don't see any excessive knock with the tech 2. My gauge is a glowshift if that's what your asking
12-03-2014
Ported and polished blower? Is there coating still on the rotors? Who ported it and what it look like? Any pictures?
12-03-2014
Yes coating is fine. The blower is off of my buddies 02 gtp. I ported it myself. I had the same readings before the new blower
12-03-2014
maybe the bbv solenoid is bad? that lever move on it when you rev the engine in park?
12-03-2014
When i rev it in park i never reach boost. Only stay in vacuum. Which i figured was normal thinking load is needed
12-03-2014
No boost in park or neutral, computer prevents boost.
12-03-2014
Thats what i figured. Ill have to check the bbv lever when i rev it after work.
12-03-2014
it should move.Originally Posted by SLICK4TIME
12-03-2014
So you see some knock? How much? I'm just curious.
12-03-2014
Little to no knock. The bbv works and i tried running it with the bbs unhooked electrically and unhooked and plugged vacuum line. Did not see any difference
12-03-2014
what do you consider little to no knock? actual numbers are nice.
any pics of this port job? maybe you over did it.
12-03-2014
A degree or 2 if i remember correctly. Here is a picture of my old housing and the ported one before final finishing. Like i said the numbers are the same as they were before the new charger
Last edited by SLICK4TIME; 12-03-2014 at 10:30 PM.
12-03-2014
i think you took to much off. but im no pro at porting.
you had the same boost with the 3.5, or did you have the 3.8 before the port job?
12-03-2014
I had the 3.5 pulley on the old charger yes
12-03-2014
have you sprayed carb cleaner at all the vac lines, the bbv the TB gasket, blower to lim, evap solenoid, map sensor? the t under the blower snout.
spray while the car is idling, if the idle jumps up when sprayed you found a leak area.
12-03-2014
I recently did all the gaskets on the top of the engine and dont believe to have any vac leaks there. I will double check all my fittings and lines when i can.
12-03-2014
Looks like you removed to much material.A degree or 2 if i remember correctly. Here is a picture of my old housing and the ported one before final finishing. Like i said the numbers are the same as they were before the new charger.
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