I hope somebody can help me with this, I have a 1988 Sport Coupe, it was a 305 automatic, and I converted it to a 350 with a manual transmission (T-5). I used the Holley TBI #502-6 and the Edelbrock Performer TBI intake manifold. I have really only burned one prom for it. I found a prom real similar to my original settings except for a manual transmission. Now my problem is I think my motor is running rich. The motor has about 400 miles on it and it doesn't smoke at idle or when I start it up. However, when I rev it, it smokes. I don't really understand what I need to adjust to get this problem fixed. As far as my prom equipment, I have a pocket programmer, and I use tuner cat to modify the bins. Any help would be much appreciated.

 

first thing you need to do is set the injector constant to what the holley tbi injectors flow

 

Ok, I searched and searched and found that the 502-6 comes with 65 pph injectors. Now what do I change in Tuner Cat. Is it the BPW Constant? Currently it is set at 134. If this is what I change what would I change it to?

 

eeekkk you have one of those bastard 747 car ecm they call a 846 or something. the best bet would be to email TC and ask them how the BW is calcualted for your particular ecm. i know grumpy has posted it before for the 747 so its out there. it should be almost the same as the 747.

do a search here or at DIY-EFI.org and see if anybody has posted the how to for BPW.