stock airtrek fuel pressure.

[ipin]

How much stock airtrek fuel pressure? Currently i'm using fpr and set to 3.5 kg/cm2. Found a bit increase in fuel cosumption!

 

[ipin]

or maybe someone mind to share what the FPR setting for stock td04 airtrek.

 

[stutzedward]

Bro.... I do not have any FPR in my car yet.... so can't help much. Plan to have this installed soon though together with higher rated fuel pump ...

 

[kaninbu]

3-4 normal,below to lean,over to rich.

 

[ipin]

thanks kaninbu, this morning just set to 3 kg/cm2. Accelerate feel more lighter.

 

[stutzedward]

are u running a higher rate fuel pump or just the FPR only?

 

[ipin]

fpr only with stock fuel pump. Td04 stock. Got walbro but not install yet!

 

[ipin]

I've tried set with various pressure. So far, with my stock setup, the ideal pressure between 2.8 kg/cm2 to 3.5 kg/cm2 (40-50 psi). More than that feel havier and fuel cosumption increase! Currently I set at 3 kg/cm2 (~42psi).

 

[stutzedward]

thanks for the info, will be helpful for me when I get the FPR in my car.

 

[ckwanloong]

I'm using td05 with stock fuel pump stock injector~ any ideas for my fuel pressure?

 

[kaninbu]

bro,
need to install a guage then know leh.

 

[ipin]

Just sharing a method to check either the engine is lean or rich. If u have the tuner with datalog or etc... better go for it! For me, simple method to check just by looking the spark plug head. If too WHITE = LEAN (LESS FUEL) too BLACK = RICH (OVER FUEL) the ideal is more about ABOUT YELLOWISH.

Read somewhere, For stock EVO VII fuel pressure is = 43.5 psi (vacuum off)

 

[ipin]

Q: How to set FPR?

A:
1) Stock fuel pressure is 43.5 PSI (>< 3.1 kg/cm2). So set you FP to that with the vacuum hose UNHOOKED .The
reason for the hose off for manifold pressure reference.
2) So under low pressure (vacuum) ie: vacuum hose connected, the fuel pressure should drop.
3) However high pressure over 1 Bar (when manifold absolute pressure is higher than 100KPA or 0 PSI(atmosphere))your FPR will add one
pound of fuel pressure for every one pound of boost that the turbo generates.