Very Strange

[jeremyfl]

I dont know if this has been discussed before, if it has sorry in advance for not using the search button.

I have a turbonetics MBC and it is adjusted to 10psi. I've noticed that when I run my a/c and I floor it in the higher gears anything above third gear that my boost gauge will jump all the way to 15psi.

This must be wrong right, as I have had no fuel cut problem, my engine isnt blown, and the car didnt accelerate like it was pushing 15psi.

Well thanks for the help

 

[jeremyfl]

Hello anyone have an answer??

 

[jred321]

the gears above third will always read a little higher than 3rd anyways, and with the ac on you are putting more of a load on the engine, so more boost will build. i would suggest just not flooring it and letting boost build that much in those situations, just to be safe.

 

[InsidiousMSP]

Have you floored it in 4th past 5000rpm? That's usually where the fuel cut will get ya.

 

[Dr.Sound]

if on idle u turn on AC, your vacuum will go from 22 to like 19..........

maybe same thing under boost...........mine without AC reads 9, with AC 10.

i guess it also depends which vacuum line u tapped into. Maybe if u have time on your hands try experimenting with different lines.