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08-11-2011
i recently bought a 98 gtp it has pillar guages one being a boost/vacume guage when im just crusin alon the vacume reads almost 20 and when i put it to the mat it climbs up to 0? i looked up videos on youtube and watched all these videos of stock gtps pushing like 10psi is something up with mine? i dont know much about superchargers other than they give ur engine a little extra boost for acceleration so any info on how i can get my boost level up would be awsome
08-11-2011
does your car feel slow? you may have a boost/vac leak.
EDIT: what does the little boost gauge in the DIC say? (if you have one)
______________________SMGPFC #99_______________________
08-11-2011
Where do you have the lined hooked up at? I bet you hooked it up wrong. Needs to be on the line going to the map sensor.
08-11-2011
This ^ is probably it, but he also didnt hook it up, he bought it that way.
______________________SMGPFC #99_______________________
08-11-2011
If the gauge line is hooked up on top of the supercharger, that's the issue.
08-11-2011
im not sure where its hooked up at i bought the car with it installed already and idk cant really say its faster than the 4 cylinder ranger i had lol but the boost guage on the DIC says like maybe halfway. i do notice that it kinda starts up hard like cranks over slightly as soon as u turn the key dies out right away then fires idk if a vacume leak would cause that or not?
08-11-2011
where is the map sensor located? i can go check it real quick
08-11-2011
It is in the back of the engine, its bolted onto the supercharger. there is a little nipple on the botton where a vacuum hose goes and then that hose goes under the supercharger snout, and then to the fuel rail. there should be a tap into that somewhere.
______________________SMGPFC #99_______________________
08-11-2011
alright ill go take a look at it and let ya know what i find out
08-11-2011
take pictures and it sounds like you have a bad boost bypass valve for the half boost issue.
08-12-2011
Alright ill post sometime tommorow when i get some time and post them
08-12-2011
If it snaps straight to zero its hooked up wrong...the vac tree has a check valve..guessing that's where its kooked into. And I second the bbv on the half boost issue. Any other mods or just gauges? And what other gauges is it running?
08-12-2011
There is no check valve in the vac tree, its just pre rotors so the air is not going to be compressed.
08-12-2011
only a cold air intake but its got a fuel air mixture guage, booost guage, and i believe a temp guage
08-15-2011
Anyone have pictures where the T should go for the boost gauge? I am having the same issue.
08-15-2011
right underneath the blower snout is a T...thats it
08-15-2011
Cool, thanks
08-15-2011
Right here....between the T under the snout and the MAPOriginally Posted by 97PAGTP
Last edited by KeithGTP03; 08-15-2011 at 07:59 PM. Reason: change pic
08-15-2011
Love the blue hoses, where can I buy?
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