Well to start this off. My autometer gauge sits right after the little box at 0vac/psi. At full throttle sometimes this gauge reads as much as 13-15psi. I'm running at 8psi. My AFC however usually reads at MAX .91 (9psi). What should I go by? I figure by now if I was really running 15psi my **** would be popcorn city. I dunno just kinda freaks me out sometimes.

 

nobody?

 

Electronic or mechanical?

If electronic, did you get the 0-15 PSI sender or the 0-30?

If you mismatch them your reading will be waaay off.

 

swap boost gauges with a friend or buy another one. If not that then buy a boost controller that also has boost readings. And if you mean "MAX .91" is that in bar? If so then your definately runnin more than 9psi.

 

Damn I said .91.. I meant .61 lol Thanks for catchin that prolly had abunch of people like wtf. And its a mechanical gauge. Unfortunatly dont really have any friends with one. Trying to get my friend to buy one for his saab and lemme test it first then install it in his car.

 

up? =\

 

whats the source you used for your boost gauge vac?

does it read correctly in vac? from what you can tell.

 

yeah vac is like 17-21 depending. My source is the fpr line.

 

Well until you corrected the .91 to a .61 it made a little more sense. .91 is 13.3 lbs which would be close to the 15 lbs you are seeing on your gauge. Are you boosting that constantly or is it creeping up?

 

I boost around 8 or a little below consistantly according to the afc. And on colder nights at higher rpm and full throttle I peak at .61 havent seen any over that.