Thread: boost gauge problems

so i installed the boost gauge on my 04 grind prix gtp and im gettin vaccume but when i floor it i hear my supercharger winnin but my boost gauge aint showin no boost i think i hooked it to the wrong place i hooked it up to what looks lk a vac source or something its on top the s/c

yea, you connected it to the wrong line.

Connect it to the line going around the LIM and supercharger. that line will show boost

Whats a LIM

lower intake manifold.

look under the snout of the supercharger, there will be a vacuum T there, follow it and find a spot where you can T into that line.

yep..pretty much T into the line right behind your alternator.

ok ill go take a look right now brb

Right around here......

i went to look its like a hard plastic line right ?

correct.

ok so how to i T into that little ass line ?

Originally Posted by 04PrixGTP

ok so how to i T into that little ass line ?

take the L nipple off your MAP sensor (it will be the final place the vacuum line goes at the rear of the supercharger), replace it with a T, and continue the line to the cabin of the car.

yea i just hooked it up im runnin 6 psi is that normal for stock ?

Sounds about right for stock.

if i get a 3.2in pully how much boost would i get then or is there something esle i can do to get more boost

Do you have other mods done before you just slap on a pully??? better have a good amount for that size.


EDIT!!! On a 04!!! thats like dropping to a 3.0 on the 97-03 that would be insane without a ton of mods!!! plus a way to scan for that knock

yea i got wires intake and exhaust system

your going to need a tune for sure

yea im tryin to find a good tunning place around here no luck so far

You are going to need more like headers, intercooler/ cam, and a really good tune for that pulley

dont even think about a pulley yet.