codenamezero

Hello all the experts out there,

I've recently upgraded my injectors to 550, haven't fire it up yet as i am waiting for my OBD2->OBD1 clips for my injectors. So i was preparing my map, i went to Parameters -> Fuel Trim. I left my stock injector size to 240cc and i updated the current injector size to 550.

However, looking at the fuel map again, none of the value changed, the percentage still remain exactly the same as before. I am wondering, do i need to manually scale down all the cell in the table??

Thank you in advance.

0mtber

iTrader: (2)

The fuel values on the fuel maps won't change, the injector multiplier will change.

You can't simply throw in a set of 550cc injectors and enter a new injector size and expect the tune to be spot on. You need to use a wideband oxygen sensor to monitor the air fuel ratios to ensure they are on target. I recommend using the overall fuel trim to make adjustments if the v/e curve is the same.