Danil.MRKV

Hello everyone. I've RamJet 502 with MEFI4 installed in my C3 corvette with mechanical gearbox. It bought from GM-Performace as a kit. Today I've run dyno test and it's looks that there is some problems with fuel. Engine has big torque drop between 2200 and 4600 RPM.

So, the maximum of torque reaches on 2350 RPM and it is only 620Nm. I can also see, that on this range AFR goes really rich, about 11AFR. Engine reach maximum 425HP@5315RPM. So, it's looks like I have some problem with fuel maps. What can I do with that? As I know, EFI comming with engine is locked for tuning. Is there some ways to fix it without erasing stock tune map?

Thanks.

pantera_efi

iTrader: (1)

Hi Danil, I have/manufacture ADJUSTABLE Fuel Pressure Regulators.

I is your CURRENT regulator "ported" to the Intake Vacuum ?

A change of Fuel Pressure could be the FIX.

Lance

ZEN357

Or maybe your fuel pump is supply enough for that monster of a motor.