Tuning help?

[sil80 monster]

What's up guys, well I have a pretty much stock s14 SR with a few bolt ons but I can't seem to figure out why my car gets such crappy gas mileage.

How can I go about getting a "tune" for what my car has.

S14 SR
HKS actuator @ 11.5psi
FMIC w/ HKS ssqv Bov (non recirc)
AEM air filter
Z32 TT fuel filter
Walboro 255 Fuel Pump
3" from elbow back

I don't plan on moding my engine any more than it is but do I really have to have my stock ECU chipped just to get it to acknowledge those few mods?

I guess I'm wondering what my options are to get my engine working properly and better without having to get something extremely expensive.


Thanks guys

[TurboStrong]

Ya my notch sucks on gas and it used to be so much better!!!!!!!!!!!
Im sending my ecu to get re-flashed!

[Hashiriya415]

make sure you fuel pressure is set to stock. You need an adjustable regulator to adjust.

[sil80 monster]

make sure you fuel pressure is set to stock. You need an adjustable regulator to adjust.

I suppose I could try that. Thought I would only needed one of those if you were running crazy mods such ass higher injectors or a bigger turbo or more air flow.

[sil80 monster]

Forgot to ask what is stock fuel pressure psi?

Thanks

[Hashiriya415]

High flow fuel pump. That tells you already right there, that the flow is not same, more flow will create more pressure.
Check FSM how to adjust fuel pressure.

[omgRWDgoodness!]

Stop using Justin's account, dummy. You don't even have your S14 anymore.

[GroundPerformance]

I can help you with a Nistune setup and some dyno time at DC Performance. LMK!

[sil80 monster]

Forgot to ask what is stock fuel pressure psi?

Thanks

[sil80 monster]

Stop using Justin's account, dummy. You don't even have your S14 anymore.

I will use his account all i want. And YES i do have my s14 still or i wouldn't be asking these questions Paul......

[TurboStrong]

^^^^^^^^^^^eeeeeeee paul, fucken up!!!!

[Hashiriya415]

@around 18in vacuum supplied to fuel pressure regulator, fuel pressure should be around 34psi
@0in vacuum = 44psi

[omgRWDgoodness!]

I will use his account all i want. And YES i do have my s14 still or i wouldn't be asking these questions Paul......

Justin told me it got junked, my bad. He got all upset when he found out about this hahaha

[smelly240]

NEVER set FP with the vac line on... every car will pull slightly different vacuum, so you need to check it with the line off... 43.5psig

[fliprayzin240sx]

You replaced to o2 sensor yet? If you're having shitty gas mileage and you're not dropping your lead foot on it, I'd try that first.