1614760 help. PLEASE!!

**Dewayne_S** · 12-15-2015

I am trying to tune a 91 Chevy 3500 with a 454 and 4L80. The owner has swapped cam, heads and injectors and added long tube headers. For the life of me I can't seem to find where to change the engine or injector size This is my first time dealing with this ECM, I have previously tuned 7165's, 7730's and a couple others but never this one. I keep telling myself I'm just overlooking them but either they are not there, labeled different than I expect to see or I just need to beg for help. It's been a while since I have so much as opened TunerPro so who knows what my deal is.

Thanks in advance,
Dewayne

**Six_Shooter** · 12-15-2015

Under scalers "Base Pulse Width Constant" at 0x2CD.

**dave w** · 12-15-2015

Attached is an Excel spreadsheet I use for Base Pulse Width (BPW) calculation.

dave w

**Dewayne_S** · 12-15-2015

Originally Posted by Six_Shooter

Under scalers "Base Pulse Width Constant" at 0x2CD.

I kept going back and looking at this but I guess I just didn't understand how this could be what I needed. After at Dave's spreadsheet I now understand .
Thanks so much

Originally Posted by dave w

Attached is an Excel spreadsheet I use for Base Pulse Width (BPW) calculation.

dave w

Thanks for this spreadsheet, I will save it and remember to use it.