TKD89RS

if i lower my BPW from 136 to 135 will it make all my values in my fuel table more leaner. cuz im running really rich throughout the RPM. or would advancing my base timing help. i dont think lowering the numbers in the fuel table are helping anymore.

RBob

iTrader: (1)

A lower BPC will produce a smaller injector PW for the same given VE and other terms (temperature, MAP, AFR. . .).

RBob.

Ronny

iTrader: (1)

i dont think you are supposed to change the BPW. dont see how it would hurt that much to cnahge it a little. when i calculated it at first was 93 but then i factored into formula fuel pressureless than 12 lbs and i could have increased it to over 100 but left it for now. when my VE table 1 was at 0 i changed my table 2 . that affected all the values at that rpm however. not sure if you have same speed density system i have(7747/TBI). i dont think it makes much difference if you are close on BPW.

Grumpy

Leaner, and a change of 1, I doubt you'll see any real difference.
If the fuel is really rich you need to get a handle on that first.

Just to see if you headed in the right direction try dropping it more like 10-15 and see what happens. You need to get the fuel table manageable first. When you make a big change first look at idle then cruise, and slowly work on getting your tune right. If the shape of the VE table starts getting really odd, then you might have to use the VE 2 table to move the values some.

Go slow takes notes, and keep a running history if things are that far off. And obviously make sure your not fighting some ignition or mechanical problem.