How about just upgrade the fuel pump and install fuel regulator 1st?nop, stock 4afe. but feel lack of power. moreover my 4afe head has been PNP...
When driving below 2500 rpm, acceleration is very poor. But after 2500, throttle response quite good. that why I thought to upgrade injector.
depend on what fuel pump you want to put... but standard 4AFE not require high power fuel pump.what fuel pump should i use? did you mean adjustable fuel pressure regulator?
I agree with you coz factory injectors with factory setting operate in its optimum capacity, not maximum capacity. Since your engine have been PNP and as u said maybe it needs more fuel, cranking up the fuel feed might do the job, which I think the factory injectors is capable of doing it. Maybe a fuel pump from a bigger car will do the job. No need Walbro laaa, right or not TRD.AE92? Heheh.. but as usual with modding, u'll never know what'll happen until u do it..heheh.. All the best and pls update us after experimenting! :)depend on what fuel pump you want to put... but standard 4AFE not require high power fuel pump.
And yes, I mean that adjustable fuel pressure regulator.
I not sure your situation, but normally before upgrade injector, I will upgrade the fuel regulator 1st, then fuel pump 2nd, then injector last.
Change O2 sensor with brand new one ker bro?4AFE is like that de ma... and add more fuel dun mean more power without proper tuning.. y not change the old o2 sensor 1st to restore its optimum A/F ratio. try it out.
Already installed that AFPR, will test it soon....depend on what fuel pump you want to put... but standard 4AFE not require high power fuel pump.
And yes, I mean that adjustable fuel pressure regulator.
I not sure your situation, but normally before upgrade injector, I will upgrade the fuel regulator 1st, then fuel pump 2nd, then injector last.
eh, i thought u already 'build' ur engine? if not mistaken u already change the internals.Just want to add little more power to my 4AFE bro. I'm not hp hunger.
Anyway, I appreciate all your opinion here.
Not build la, my 4AFE just been overhaul and at same time did PNP. Not change the internals.eh, i thought u already 'build' ur engine? if not mistaken u already change the internals.
i dont think changing to bigger cc inj will ad more power.....thats my opinion.
1 more thing, where u at actually?
oic...i tot u with trd.ae92 follow his project in mixing af together 4ag...
Dayline668: I will change that O2 sensor next time.
Not build la, my 4AFE just been overhaul and at same time did PNP. Not change the internals.
I'm at puchong.
Bro, do you know how much brand new O2 sensor will cost?Brand new original O2 sensor lo.. When ur O2 sensor spoiled, ur F/C will go up, car no power. When change to new u will get the power bac to original state, not like new engine la cos engine aged ma. But u get the best of both world, restore power n better F/C. No need 2 waste money on other upgrade.. Save money for blacktop, or budget can go silvertop.