Hello I am Sjaak from the netherlands. a very new be. Just start with tuning. I have a 84 crossfire vette. using the 7747 ecm with prominator and i begin with the starter bin. only chanche the BPW start the car,it idle ok but with cold engine put alittle trottle and engine almost die. running much to rich. when above 60 celcius run much better but a lot of back fire. then i change the AE vs TPS table [ i doublle it] when engine cold still **** but when warm up runs ok no backfire anymore. does the ecm when cold not reading the new BPW??? or do i forget something else,or do something wrong???? Hope somebody can help me[i don't know how to post my bin]

Thanks Sjaak

 

sounds like timing is off bpw is prolly fine but what mods have you done

 

It's a 383 with world s/r heads tpis headers 224/230@0.050 lift 0.479/0.480 lobe 114 cam 1.6 roller rockers sy-1 intake manifold 2.2 inch trottle body's tbi''s parralel. injectors 90' 85 feuel pomp. pressure 15 psi that's the set up

Sjaak,

 

The BPW does not affect the AE. The AE is entirely pulse width based.

There is also a CTS based table to change the AE PW. May need to change that some.

RBob.

 

I can't find that table. i only see AEvsTPS and AEvsMAP or am i looking of the wrong place I use the $42.xdf is that right?

 

I just checked a bunch of ECU files I have here, and none of them have the AE vs CTS table in them. It can be added to the XDF using TP's built in editor. Here is the table location and layout:
Also, double check the VE FL1 table layout. Many of the ECU/XDF files have the RPM & MAP axis reversed. No fun trying to tune as the wrong areas of the table will be changed. The TP window for the VE FL1 table should have 100 through 20 down the left side (MAP). Then 4 - 8 - 12 - 16 - 20 - 24 - 28 - 32 across the top (RPM x 100).

RBob.

 

@RBob I think it's to far in the dark room for me. I use TunerPro RT and find the Hex Editor but i don't know how to make changes in the .xdf I Read until my eyes are tired in the tuning stuff. to understand it. Is it possible that I e-mail my bin in txt to you so that you maybe can take a short look on it??