Setup
LS/vtec
stock gsr head
stock b18a block
ps9 with 1 wire vtec
turboedit v 3.1.9
dsm 450s
gm 3 bar

I'm just starting to tune my car. I got it to idle fine, when warm.

However if i rev it up the a/f will be around 13, from 1000rpm to 1500rpm, just in neutral no load. At 1500 rpm and about 28inHG it will all of a sudden turn really lean, past what my wideband can read. (over 17:1). So i added more fuel in turboedit at that spot on the map, but the same thing happened. I added almost %30 more fuel in turboedit but nothing changed. So i thought it might be fuel pressure dropping or something like that, i hooked up a gauge and it stays around 44 psi.

The map sensor is putting out the correct voltage, .384 at ~28-30inHg . But i do get code 13, baro. I disabled the code in turboedit, but it will turn back on after like 10 seconds for some reason.


Any ideas of why this is happening?