losing fuel pressure on acceleration. lean at wot

[derass]

Maybe not bad, but not connect properly. Maybe the send and return lines are mixed up or the vacuum line is connected to the wrong port on the engine. Is it an S13 or S14/15 SR?

[entrapm3nt]

Originally Posted by derass

Maybe not bad, but not connect properly. Maybe the send and return lines are mixed up or the vacuum line is connected to the wrong port on the engine. Is it an S13 or S14/15 SR?

Positive everything is hooked up corrently. It's a s13 sr into a S14 kouki using wiring specalites harness

[derass]

Originally Posted by entrapm3nt

Kat you said my fpr should be set at stock pressure regardless of my modifications? I've never herd that before. Then what would be the point in having a fpr besides the gauge?

I agree. It should be stock pressure. One reason for changing to an adjustable FPR is because the stock one can't bypass enough with an upgraded pump and the car ends up running a little rich, but it's nothing major.

Originally Posted by entrapm3nt

Positive everything is hooked up corrently. It's a s13 sr into a S14 kouki using wiring specalites harness

The vacuum hose should be going to one of the top two vacuum ports on the throttle body.


I disagree that the pump always has to be rewired. I've been using a Walboro with the stock wiring for 5+ years now and haven't had an issue. However, some cars may have worse wiring than others. IIRC, the connector is packed with grease to prevent corrosion.