Power Fc Help

[aMAYESing]

So I've just finished putting 550cc nismo injectors, Z32 AFM, Hypergear highflow and a Power FC into my 1996 R33 GTST.

Now the only problem is that the car wont idle? As soon as it starts it dies, unless i control the revs manually.

I've gone through on the hand controller and turned the boost control kit off, I've set the injector latency correction and I've selected that it's running a Z32.

Any help would be greatly appreciated thank you.

[89CAL]

Is there any issues in the sensor/sw check? Look at paulr33's guide for more info but i think they will be highlighted black if there is an issue

[aMAYESing]

Doesn't seem to be any problems, have been over paulr33's guide several times but nothing in there covers the issue i'm having.

[djvoodoo]

Injectors new or 2nd hand? Flow tested and cleaned are they?

[STATUS]

set the injectors to 450 and try that, it will all be changed once the tuner plays with it anyway.

sometimes they go a bit lean with the full 550 on the std map.

other thing is the orings could be weeping and over fueling.. check for black smoke instantly smoke after startup

[aMAYESing]

Been playing around all afternoon and found a few things,

A hose that goes to the AAC was blocked that has now been cleared, still wouldn't start so I've pulled a spark plug out and from trying to start the car so many times I've fouled the plugs.

Would this not allow the car to start what so ever?

Edited June 6, 2015 by aMAYESing

[aMAYESing]

Only pulled the first plug out so far, but its filth and reeks of petrol so i'll go get a fresh set tomorrow.

[aMAYESing]

Injectors are 2nd hand but have been flow and leak tested and came back all sweet.

[mr skidz]

Your car will not start with wet plugs clean them or replace them but you need to sort your idle issue out first you just foul them up again

[mr skidz]

adjusting latency settings won't be enough your injectors are bigger than standard you'll need to scale them back as you'll be over fuelling if you leave stocks ecu settings hence your wet plugs. Make sure you're o2 feedback function is switched on on the handset regardless of ignition and fuel values your car should still remain idling regardless of what inputs are selected in the idle section of the map. It's the only time the power fc reads the factory o2 sensors and does it only to stabilize idle and cruise throttle inputs I recommend you have a proper wideband fitted so you know what's going on otherwise you're just guessing and that's dangerous I wouldn't put a computer in a car without a wideband already fitted

Edited June 6, 2015 by mr skidz

[Ad's]

I had the same issue when i dropped 1000ccs in, I had done the injector latency corrections etc and it wouldn't idle. I found out it was running mega lean and I had to add more fuel over the course of the map. I have to go into ignition/injector correction every time I want to start the car and adjust the injector side so it runs right. Been driving around for 3 months like this and it drives pretty well, doesn't ping, run rich or knock its head off under load I think its about finding the sweet spot. Obviously its not as good as a full tune but its got me out and about for some more RandD to go back to the drawing board with before the real tune.

[mr skidz]

I had the same issue when i dropped 1000ccs in, I had done the injector latency corrections etc and it wouldn't idle. I found out it was running mega lean and I had to add more fuel over the course of the map. I have to go into ignition/injector correction every time I want to start the car and adjust the injector side so it runs right. Been driving around for 3 months like this and it drives pretty well, doesn't ping, run rich or knock its head off under load I think its about finding the sweet spot. Obviously its not as good as a full tune but its got me out and about for some more RandD to go back to the drawing board with before the real tune.

but he's injectors are wet that can only be fuel so he's running rich he needs to back the scaling down Edited June 6, 2015 by mr skidz

[aMAYESing]

Injectors have been set to 67.5% with .18ms of lag to compensate as per paulr33's Power FC FAQ.

I have a wideband currently installed, but I cannot get the car to start so that's irrelevant atm. Just want to get the car running and know that it's all good before I leave it with a new tuner.

The only thing i can imagine the problem to be is the spark plugs, they're caked.

[Ad's]

Sorry I only skim read the thread. If thats the case then back off some of the fuel until it starts and idles, then check it with your wideband once its ideling by its self and work off that. I dont have a wideband but I used gopro footage and a good ear to get mine to where it is atm. Just be careful as you can also cause damage if you go too far and dont have a understanding whats happening when pressing buttons.

[mr skidz]

Make sure power fc is reset before you put your settings in if you've just altered it from when you received it the engine cranking fuel values might be too high from the previous tune also making your plugs wet or could also be your cold start values which also play a part when your engine is cold.

the two could be too high, best is to reset then put your values in.

on standard settings it should get your car kicked over but make sure 02 feedback function is switched on so the o2 sensors can stabilize your idol hope this helps

Edited June 8, 2015 by mr skidz

[aMAYESing]

Thanks for the replies, put new plugs in today and had a general look over the engine to find a hose to the AAC was blocked. Unblocked the hose and with a bit of encouragement the car started and was running perfectly, got through the learning procedure without any dramas. Won't be driven until it's to the tuners in a few weeks.

Does anyone have a rough idea on how much would be a reasonable price for a full custom dyno tune? I've been quoted $8-900 and to me that just seems plain ridiculous.

[75coupe]

700-1000 is what ive been up for in the past

[aMAYESing]

Bloody expensive game this one lol.

[mr skidz]

sounds about right.

[STATUS]

if plugs are wet i reckon the lower oring is nicked on the injectors or you pulled the injectors out of the rail whilst the rail was in the car and all the fuel emptied into the cylinders.

Try start it with your foot to the floor, will take upto 1min of cranking before its starts.