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03-28-2009
Hey everyone. hopefully i put this in the right spot, if not let me know. I just recently did a topswap on my 97, everything went well....but how do i get more boost. The factory gauge only goes up about 3 or 4 lines at full throttle, i hooked up a boost gauge and it only hits 4 if im lucky, can someone please help me fix this..
03-28-2009
Do you have the boost bypass solenoid hooked up?
03-28-2009
hey, thanks for the reply. Ive got it hooked up and i think correctly... and ive tried adjusting it up and down but that doesent seem to make a differance..? how many lines should appear on the factory boost gauge if its working properly?
03-28-2009
take off the computer control of the BBV and leave the lower vacuum line off of it and open. end your vacuum lines at the FPR. you will not have full boost.
03-28-2009
thanks ,but i dont quite understand you.. if i leave it open will it help me get full boost cause its hooked up now and i dont have full boost?? sorry im a newbie to the boost thing
03-28-2009
The GT PCM isn't calibrated to read boost correctly. I"ve found this out on a couple of cars lately....that is if you are using a GT PCM.... Maybe I'm misunderstanding the topswap part.
03-29-2009
yes, the GT pcm cannot control the BBV correctly. leave the wiring off that goes to the PCM and remove the lower vacuum line from the BBV. it will then run off vacuum alone and you will get full boost, but the PCM will no longer be able to cut boost on shifts or torque management which isnt a big deal so long as you get it tuned so it doesnt bite you in the ass later.
03-29-2009
intense pcm will solve your issue =]
hogan 3inch DP u bend delete ,180*tstat, autolite 104s, LED interior, 4" FWI, 2000watt system, bullitt rims, zzp pistons, pems, alt rewire, thrush muffs, 3.4 zzp mps, transgo shift kit, triple edge performance trans. autometer triple pod :SOON: urlosn HPT PCM tune, HEADERS, 1.9's
03-29-2009
Ahhhhh, got it now, thanks alot guys, i will try it..
03-29-2009
no it wont...Originally Posted by GTPJOE90
why do you think that would be a good piece of advise?
03-29-2009
Hey bio248, could i put a 3.4 inch pulley on , the mods i have are tuned pcm, cold air in fenderwell, colder plugs and a 180 thermostat, is there more i would have to do?? thanks
03-29-2009
no. do not put a smaller pulley on yet. you need some exhaust work first. you need at least a 3" downpipe to even think about a pulley. just think of it this way: to put more air in the engine you need a way for it to get out, right?
03-29-2009
Noob advice = NO BUENO!!
03-29-2009
alright thanks man that will be my next mod i guess..
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