newbie boost question

gsxr141

Active Member
Oct 24, 2010
1,158
10
38
rochester
I know i'm going to get flamed for this, but that's ok. I've looked around, and i didn't see any answers to this particular question.
Here's the situation..........
I have a 90 turbo with a manual swapped into it, but it still has the auto ecu in it. From what i've read, the auto has a lower factory boost setting than the manual. Right now i can't get more than 9lbs without hitting fuel cut. Any more than that, and it hits a brick wall.
I was told that i could just disconnect the factory boost sensor, and run more boost. I totally understand the dangers of turning it up too much, but i've read that going to 13lbs should be ok with light mods.
My mods are.......... cone air filter, boost controller, bic ddp, full 3in exhaust, and of course a boost gauge.
 

hvyman

Dang Dude! No Way Man.
Staff member
Apr 17, 2007
12,568
1
0
Fullerton,CA
The "boost" sensor is for the gauge and nothing else.

Some cars hit fuel cut earlyier than others. Of course climate and temp play a roll as well. IF your in colder temps you will hit fc sooner than hotter.

Ecu has nothing to do with it. The wastegate is what controls the boost. Its off spring pressure. All the turbos are the same turbo and all the wastegates are the same.

Id suggest buying some more supporting mods like fuel pump, 550 inj, lex afm, safc, wideband, afpr, and a boost controller and safely turn up the boost properly.