450s on an A/T GS-T? [1G]

[Oblivion02]

I have a 1G Mitsu Eclipse GS-T A/T. Just recently, I had considered doing a small fuel system upgrade. I was planning on getting a walbro 190lph fuel pump, 450 injectors, rewire the fuel pump. As an addition to the upgrade, I was thinking of putting in the M/T ECU to avoid running rich, but I was wondering if there are any other parts I should change as well to avoid problems with my car.

[kenamond]

Someone correct me if I'm wrong, but you might need a M/T FPR, too. I think the stock A/T FPR runs higher fuel pressure (43ish) whereas the M/T FPR runs like 38ish. So my guess is that you need the M/T ECU, 450s, and M/T FPR. If you go with a 190 FP, you'll still overrun it, so you'll still need the AFPR. And since the cost of a 255 vs. a 190 isn't really a big deal, I'd say to go with the 255 instead of the 190. But I'd also like to see what others say.

[xdxoxuxgx]

If you're upgrading your fuel you'll definitely need something to tune with whether it be an SAFC, DSMLink, ECU+...etc.

[kenamond]

Originally Posted by xdxoxuxgx

If you're upgrading your fuel you'll definitely need something to tune with whether it be an SAFC, DSMLink, ECU+...etc.

The 1g auto tranny cars have a different ECU than manual tranny cars. The A/T cars run 390cc/min injectors, while the M/T cars run 450cc/min injectors. He plans on getting a M/T ECU and the 450cc/min injectors. But I think the A/T and M/T FPR is different; the A/T runs higher fuel pressure than the M/T. That's what I'm hoping someone else can confirm and perhaps elaborate on.

[1bad91tsi]

i was wondering what the 450s would act like with the a/t ecu?Would it act like 510s?