4.0 bar fpr

[rs200]

hello people..

i have one question about FPR... well I put AAN ecu in audi 200 20v, and I need 4.0 bar FPR...
well the original FPR (AAN) part number is 078 133 534 C
I find from 2.8 V6 - 078 133 534 A

both FPR is 4.0 bar.

can I use this second fpr like alternative?
is there any difference between these FPR's ???


thanks for help

[UrS4boy]

well the original FPR (AAN) part number is 078 133 534 C
I find from 2.8 V6 - 078 133 534 A both FPR is 4.0 bar. can I use this second fpr like alternative? is there any difference between these FPR's ??? thanks for help

Actually the A is the original and the C is the replacement UrS4/S6 FPR. There are some signs that the A is better than the C, as shown here:

http://forums.quattroworld.com/s4s6/msgs/14150.phtml

[da_trem]

What would be the difference between the 2 at wot? Would the "C" make restriction in flow at the return line causing the motor to run richer?

[rs200]

well URS4boy sad that A is original.. before 20min i put it on my car and it work perfect.
how I know?
because on air/fuel ratio gauge I saw it is always in optimal mixture.

before with 3.0 bar (3b) it was sometimes in optimal but much time in lean mixture.

I think now is super because on 1.4 bar boost it's still in optimal ...

thanks every one for help.