Installed 600cc Injectors

[Topaz]

Hello all,

I replied in the Apexi PFC FAQ thread as well..

My car is running really rough, the idle is low and its unstably jumping a few rpm while on idle. Can some one help me out here please? I have set the Injectors in the PFC to 74% correction and +0.04 latency but its still no good.

Is there something I am missing?

I have never played around with the PFC settings before.

[Topaz]

Anyone?

I still need help on this

[Topaz]

My last resort is to re-install the old injectors and take it to a tuner, but if I am this close already I'd rather not have to pay someone else to do work I have already done.....

[rb20inside]

although not entirely the same i installed gtr replacement 550cc injectors in my rb20det. adjusted them on the powerfc and it ran ok but fuelly. idle tracked around a bit but not bad really for a 50% adjustment. a dyno tune fixed it nice.

if you can drive it to a tuner do that. i know where you're coming from on the labour thing

[Topaz]

Unforetunately I will have to install the old injectors to be able to drive it, the idle is all over the place

What did you adjust in your PFC settings? All the tutorial says to do is adjust the Injetors to 74% and +0.04

[Topaz]

bump

Surely someone has performed this mod with initial AFR problems before.

[Maxi_z]

Where did you get the +0.04 adjustement?

[VB-]

well you'll have to get it on a dyno to get it runnin right anyway (i think), so you can either reset the ECU and let it learn to idle, then take it to a tuner for a complete remap, or just take it to a tuner and let him make minor adjustments to the main maps, then maybe mess around with it to try and get it to idle.

im not completely sure on the retuning thing just for bigger injectors, but its just what i'd do

[Topaz]

After the injectors problem I installed cam gears and after replacing everything back onto the engine it was running worse.

Took it to a tuner and got it fixed up. My problems were not with the PFC tune that I did myself initially. From what I can see from the tune, the settings are pretty much what I had when testing it. Must have been something about what I did, but I will never know....

Moral, don't do it yourself if your me

[s13_Skyline_inside]

well that is their job thats why people pay the money for them to do stuff to their car