I need help tuning my 13b half bridgeport. I am using Aaron cakes tune but I do not have a BAC valve. I have messed with the VE tables trying to make it idle around 1000-1500 (looking for my brappy idle) but it seems I can only get it to either idle at 2500-3000 and be lean and smooth revving up, or run it pig rich having a 2000 rpm idle and bog when revving. It also idles almost stock (no brap brap.) I have 550cc injectors. Im just trying to get it close so I can drive it and tune more before I run a turbo. Any help would be great. At least a map that can get me close.

 

Bump

 

timing play a big role.also whats your a/f at idle.

 

I think I figured it out. Got the afrs down to 14.5, and the idle to 2500rpm. I think if I play with the injector pulse time I can get it to 2000rpm. I got my brappy idle back.

 

2000 rpm its kind of hi idle try to bring it like to the 1500 to 1700.play with the timing and idle a/f until its get happy.

 

I still can not get the idle down. I think Im going to have to live with a 2500 rpm idle

 

Its not. I have built an half bridge, large exhaust port that idled at 1200. You could tune out the brap.

what is your exhaust set-up? What does your timing map look like?

 

I got it figured out its down to about 1800 rpm. I want the brappy idle thats the reason of doing a bridgeport for me. And its aaron cakes timing chart no adjustments at all.