More Power After Tomei Pump Install?

[R33GOD]

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

Edited August 29, 2007 by R33GOD

[abu]

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 August 29, 2007 by abu

[R33GOD]

its made a pretty big power difference. more than when i got it tuned. throws me back more in my seat

very weird lol

[Strik3r]

What ECU and injectors are you running ?

[R31Nismoid]

It'll have more midrange

peak power probably wont change

[R33GOD]

What ECU and injectors are you running ?

power fc and standard injectors

[Strik3r]

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

have fun

[R33GOD]

It'll have more midrange

peak power probably wont change

much more midrange and i can notice abit also at top end.

[R33GOD]

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 August 29, 2007 by R33GOD

[Strik3r]

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

[R33GOD]

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

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

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 August 30, 2007 by R33GOD

[R33GOD]

has anyone had a similiar situation? if so how much extra power did u gain?

[SilverECR33]

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.