I got about a 1 PSI pressure loss after installing a pressure switch for my alcohol injection, what's up with that?

Before installing it my boost gauge would read a little over 5 PSI. Now, it reads just under 4 PSI. I don't currently have the alcohol injection completely set up so the switch is doing nothing at the moment, but I just Tee'd into the vacuum/boost line going into my cab for my gauge.

check for leaks.

I did, everything looks good.

what company alky kit

might want to try zip ties on the lines just to make the connection a little tighter



1989 Turbo Trans Am #82, 2007 Cobalt SS G85

Quick2.4 / Bryan B wrote:what company alky kit

DevilsOwn

Rodimus Prime wrote:might want to try zip ties on the lines just to make the connection a little tighter

Did that to begin with.

hot weather outside?

It's actually been rather cool lately, lot's of rain.

its really humid though, ive not been making as much boost either



1989 Turbo Trans Am #82, 2007 Cobalt SS G85

Rodimus Prime wrote:its really humid though, ive not been making as much boost either

It's not that because I had driven it the day before and it ran it's usual, just above 5psi indicated. Not much changed between Friday and Saturday. I don't see how that switch could cause that big of a pressure drop.

i wouldnt consider 1psi to be a large pressure drop, can always move to a smaller pulley if you want more boost



1989 Turbo Trans Am #82, 2007 Cobalt SS G85

Remove the switch and see if you regain your 1 psi.



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