do i need both?

[dsmrocker]

well, o.k. i install a turbo(fpb28)and a walbro 255lph fuel pump just a couple weeks ago. everything is fine as far as the fuel goes, but am not quite sure what went wrong with my autometer Air/Fuel ratio guage. after i install my fuel pump everything was fine till after the turbo installation. since then i was getting a lean reading from the a/f guage. it stays just @ lean condition, about 2-3 bar(Lcd). now, i decided to get a fuel controller, and not for sure which one i should get. the S-AFC or a AFPR? or do i need both? i really cant believe that am running lean, just after the turbo installation . i never heard of anyone had a problem after installing a turbo, especially a relatively small turbo like the "big28".
any comments of suggestion? pls do. thank you!

 

[RocketBoy]

Does the a/f gauge ever move or does it always stay at 2-3 leds. If it doesn't move, then you have a bad connection somewhere. As far as fuel control goes you really need both. There's a lot of people that run the 255 w/o any control so you might hear both ways. The AFPR keeps too much fuel pressure from building up and the AFC allows you to lessen or increase the amount of fuel being injected. good luck

 

[dsmrocker]

thanks for the input! regarding about the a/f guage, the lights bounces between the the 3 leds. i've been driving my car for 2 weeks now with the new turbo and it seems like everything is alright. i have my boost set to 15psi. my guess is that my O2 sensor got messed up when i was installing my turbo, so i ordered a new O2 sensor today(hoping that this will solve the issue). i will look for a S-afC and AFPR as soon as i find out about if O2 sensor is not the problem.
...thanks again!