ComputerJLT

i'm using the pgmfi boost rom; tuned with te2b9; it was working fine with my 240cc injectors + modified maps (rerichened up) and was running really rich under boost.

now i installed my 450cc dsm injectors; took the pgmfi1.0 rom; turned off launch control and now it craps out at boost (only running 4-5psi due to new head gasket + learning curve). It's like the boost cut feature kicks in but its suposedly not implimented yet... so wtf?

Just for ***** and giggles i threw in the ghetto dyne 450cc rom and it worked fine @ boost; just ran really lean everywhere else.

So... why is it suddenly doing this?
Also; i haven't tuned my fuel preasure; still waiting to get my fuel preasure gauge in, so i have no idea what its at; i knew that it was high for the stock 240cc injectors; but i dont know what preasure the dsm's like.

Chris Harris

The Dual Map ROM does this thing where is overly richens up the transistion from VAC to BOOST...try leaning out slightly one or two columns at a time starting with column 6 of the boost fuel map...and working you way to the right.

Do that and reburn and test...slight modifications unless you have a WB to test.

ComputerJLT

thing is, going from vac to boost is smooth as silk; IF is tay below 5psi. like accelerating in 3rd at a little throttle it'll boost to maybe 2psi and run real smooth.

it's like at 5psi it just craps out. Almost like something is cutting the boost.