my car has a racing beat under drive pulley. It came with the car, I will probably put a stock pulley on in the future.

But anyhow my car when it is first started is not producing 14.5 volts it at first produces about 12-13v. I believe This is a combination of low idle during warm up and the pulley not turning the alternator quick enough. When its not producing enough voltage you can hear the fuel pump slow down and the car start to idle slightly goofy.

How should I start with the voltage map to compensate for low voltage rough idle.


Any help is appreciated.

 

I would recommend installing or controlling the BAC valve with the Haltech, it will allow you to increase RPMs for cold starts and compensate for other things like AC or power steering.

If you already have one, you might want to play with the settings to make the car fast idle when cold.

 

i couldnt get the stupid stock bac to work right. im thinking bout ditching it.

 

+1.

B

 

Talk to me about it tomorrow, Alex. I'll help ya out. It's real, real simple.

B

 

yea I probably should put a BAC in. I just have not looked much into, so I gotta figure how to wire it up.

 

FWIW, on my FC (e6k) i never got my stock s5 BAC valve to function 100% correctly. maybe i just had some whack settings.

i got it funtioning pretty much perfectly with my e8 on my FD though.

 

I played with the voltage map and didn't notice much difference. I then played with the idle and leaned it from 12.5 to 13.0 AFR and it smoothed it out significantly.

When I was looking at all the maps I noticed my Priming map is rediculous and probably why it will flood out occasionally. it has 100+ms injector time at the lowest point in the priming map.

 

Yeah Ted, the E8/E11 idle control is VERY good, but on the old K's and even with X's the best idle will come from using the stepper motor control wires with a 4 wire valve, either the Haltech/GM or something like that.

 

could I get a idle control valve from some other car and make it work? One that does have the stepper control?

 

Yes. Any 4 wire valve will be a stepper motor valve, Toyota Supra 2JZ/1JZ, GM vehicles, those are pretty good, you would have to custom fit them on but they should work well. The haltech unit is a GM style, and they sell the aluminum block with fittings so you can remote locate it and use some hoses to put air in the motor. They work pretty well and they have documentation for it.

 

Hot min hot max baby!