05-26-2008, 05:35 PM
!!! NOT CONFIRMED !!!
Join Date: Nov 2007
Total Cats: 0
'94 BEGI S pre-4k bog
Last year I bought a BEGI-S for my '94 to get some base numbers, then upgrade bit by bit to see what each "upgrade" can net this particular kit. Started at 97rwhp stock, up to 171rwhp non-intercooled with Bipes and 190lph pump and just recently intercooled.
Before I dyno it intercooled, I'm still trying to debug why it bogs below 4krpm. It happened immediately after installing the intercooler so the only change would be cooler air/denser air. Throttle response change was not really noticeable.
Before the intercooler it would start pulling pretty darn good from 2500rpm on up, but now it's quite weak until 4krpm then gets going nicely.
BEGI-S (non-separated gasses) GT2554 (intercooled) 8psi
Base timing set at 12 BTDC (i believe)
Bipes settings: (aggressive)
Airflow to Retard: Open Open Open = max retard 4
Airtemp to Retard: Open Open = 1 degree retard for each 65 degrees F)
RPM Map: Closed Closed = Start Retard RPM 3000
I've gone through different Bipes settings, played with the FMU but with no luck. I've returned it back to the settings I had pre-intercooled to start over.
Any ideas on this bog? I want to dial this out and dyno before moving to larger injectors and MSPNP.