Thread: boost gauge question

first off i searched on here for a little bit for information but looking to hear more. i installed my boost gauge today and hooking it up is not the problem. i ran it to the vac line on the top of the blower where the vac tree is. i ran it there because i herd of someone else on here doing that and i want to keep the line away from heat. it work but i dont think the reading is that accurate on it. when at idle it reads 20 for the vac side and when i hit WOT it shows 0 PSI. so i think i have it hooked up to the wrong line. what lines did you guys who have one run yours to? and where should i run mine to if its not in the right spot. i can get pics tomorrow any help is appreciated

line needs to see booost.

So run it to the line Under the blowers snout.

that's where i had it at first but it gets real hot in that area, do you think it will mess up the line? ill look tomorrow for a place around that's not too hot if there is one

I randomly started tapping vacuum lines until I found one that read boost lol. I'd like to see which one is the "correct" one myself

The stock lines are plastic?

And are in the heat 100% of the time?

Heat is going to be an issue?

what line are you running it on now?

Originally Posted by Fivefingerdeathpunch

The stock lines are plastic?

And are in the heat 100% of the time?

Heat is going to be an issue?

yea never thought about it like that
its just the boost vac line seems a lil more thinner and more delicate
and also i got rid of alot of my original plastic lines because they broke when i took the blower off
so i replaced them with regular vacuum line not the plastic line

97 GTP blowers have a line for the LIM to MAP.

98-03 blower run a line from the boost control solenoid to the FPR to the LIM to MAP. Its one huge line.

This is a 97 style blower.
Boost Gauge Install

thanks for the help man

that's where ill probably tap into then thanks for the help guys!

i tried another spot, tapped into mine right under the snout but still have to try another spot its now reading PSI but only like 3-4

Originally Posted by gtpeddie

i tried another spot, tapped into mine right under the snout but still have to try another spot its now reading PSI but only like 3-4

Is it the stock S/C pulley? It will read like 5-6 at least mine did.

When I was S/C I t'd mine right below the snout and never had an issue. The vac side at idle should be reading -18 to -20