Need Advise : 4AFE injector upgrade...

t-la

1,000 RPM
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May 10, 2005
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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.
oic...i tot u with trd.ae92 follow his project in mixing af together 4ag...

if u already pnp the cylndr head, why not u go for bigger exhaust header, bigger air intake and a lighter flywheel, i think it should produce a much better response.
 

me2kimi

500 RPM
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Thread starter
Jun 25, 2007
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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.
Bro, do you know how much brand new O2 sensor will cost?
 

FGT

500 RPM
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May 19, 2007
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i read somewhere in these forums brand new costs a few hundred...
 

Dayline668

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Aug 4, 2007
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Yea.. its not cheap.. I hav no info about price. Any sifu can giv some info here..?
 

me2kimi

500 RPM
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Thread starter
Jun 25, 2007
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I better check my o2 sensor as levin818 post first.
 

bernard74

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Oct 21, 2008
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Just want to add little more power to my 4AFE bro. I'm not hp hunger.
Anyway, I appreciate all your opinion here.
Hey dude, u can change ur stock pistons with 4age 16v pistons like I did, better pick up & can also feel the better low end pull. Roars diff & louder now. Too bad my current experiment seems too fail...using 4age ST auto gearbox. Haven't found the solution to it yet. :hmmmm::banghead:
 

me2kimi

500 RPM
Senior Member
Thread starter
Jun 25, 2007
717
276
1,563
Puchong
Hey dude, u can change ur stock pistons with 4age 16v pistons like I did, better pick up & can also feel the better low end pull. Roars diff & louder now. Too bad my current experiment seems too fail...using 4age ST auto gearbox. Haven't found the solution to it yet. :hmmmm::banghead:
Ok will make it as next project. thanks 4 ur opinion.


BTW, I've check my O2 sensor. The reading is fluctuating between 0.2V~0.9V. I'm using digital m/meter.
 

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