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More Power After Tomei Pump Install?

R33GOD

By R33GOD,
in Engines & Forced Induction

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R33GOD Grand Master

R33GOD

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Posted (edited)

my car (r33 gtst) was tuned with all the usual mods a few months ago with the stock fuel pump in my r33 gtst. made 209 rwk on 12.5- 13psi ( slide hiflow.) my car was going good. had an occasional splutter through the rev range. changed it 3 days ago (tomei intank) and wow what a difference in power. And no more splutter.

how much power would i expected to gain and is this normal?

thanks :pwned:

Edited by R33GOD
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abu Grand Master

abu

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Probably no power increase over all, but its probably running a lot safer now with more punch in the mid-rage? AFR's would probably be a lot better.

But with saying that, you maybe be able to up the boost a little more now, so you will probably seem some better power, but make sure you get it on a dyno sometimes just to check if the AFRs are safe.

The splutter could have been the car leaning out, due to not getting a sufficient amount of fuel from the stock pump. With the TOMEI pump, you get a increase in fuel flow/pressure and its able to maintain a more consistant fuel pressure and prevent it from leaning out.

Something like that!..

Edited by abu
R33GOD Grand Master

R33GOD

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upgrade injectors to Nismo 555cc's and push 18psi through that turbo and you'll hit close to 250rwkw.

have fun

im gettin an injector upgrade in 2 weeks and a new z32afm. i dont want to run that much boost though. keep the boost conservative at 15 or so

Edited by R33GOD
R33GOD Grand Master

R33GOD

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meh. the turbo is built to handle 18psi all day every day. some users on the forum run 20-21 on the oversize variant no probs. your just missing out on power. your choice though :D

15 or 16psi max i want to run with stock internals. want the car to last a very long time :unsure:

back to topic i spoke to my tuner and he told me that there would be atleast a 5rwk gain now with the new pump on the same boost

Edited by R33GOD
SilverECR33 Veteran

SilverECR33

Posted
Posted

yes. I noticed the power difference aswell, after I added my fuel pump also. without changing anything else. Although my difference in power wouldve been less noticable than yours however, because mine was pretty much stock back then, with just fmic and avcr.

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