I am working on my dads 87 TII building just a little more hp for autocross and hillclimb racing. I already put a 3" turbo back exhaust on the car and would like to turn the boost up just a couple pounds. I already have a FCD but reailze the stock fuel system should be upgraded. I have heard of people running first gen injectors but dont really know much about this (not even positive they had fuel injection). Any one have any sugestions on what size or type of injectors I can easily and cheaply run. And are there any piggy back computers I could also run for fuel without going to a expensive stand alone?


Thanks in advance for the advice

 

GSL-SE FB's had EFI.

They use a pair of 680cc injectors. SO they would be an upgrade from 550's. BUt you need to keep two 550's or buy two sets of FB injectors.


You need atleast an S-AFC to help control the fuel output of the new injectors and have a dyno session to tune it properly(using the shop's or your own wideban/egt)

 

720cc secondaries and an S-AFC (with the proper tuning). And while you are there, a fuel pump (ie. Walbro).

Oh, and a healthy port on the wastegate. If you pick up the latest RXTuner magazine, you will find probably the greatest article on porting a S4 wastegate that the world has ever seen.