so did you use the S4 AFM with the GSL-SE ECU? with stock 680cc injectors? hows the AFRs? i just completed an s5 engine swap into my SE, stock ecu, fuel pump, and 2 680cc injectors on the stock AFM. i know it's got all of the s5's low end, but i'm pretty sure it would run damn near 100%dc trying to keep up with the airflow at higher rpms.

thinking of going with some 800-1000cc injectors and which ever AFM would lean out the mixure the most(maybe an n370?)

 

Regarding this conversion... I'm running the gsl-se mild streetport with the s4 intake, ecu, etc.

I'm using the stock t/body but havent done the butterfly/dashpot removal yet.

The issue i'm having is around 5k rpm the engine just bogs out. Feels like fuel starvation, but wasn't sure if the t/body mod is a cure for this?

I'm also running the stock gsl-se fuel pump setup with what appears to be a pressure regulator at the pump?

Is the pump just regulated for two injectors? Can i just remove the stock regulator from the pump and go aftermarket at the firewall?

This beast is so close to being roadworthy, just falls off under load.

Any help would be huge!