Anything about Ford EEC tuning. TwEECer and Moates questions dominate, but there's some SCT and OBD-II knowledge too.

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pkm48193
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Joined: Sat Apr 20, 2024 5:13 pm

2003 cobra spark tables

Post by pkm48193 » Fri Jun 27, 2025 11:43 pm

I am running a turbocharged 4.6 4V in a 1996 Mustang. I am using CDAN4. The engine goes into 6 psi boost at about 2200 rpm and maintains this to redline. The log of "Load vs MAF" shows that Load only gets to 80%. I have modified FN012 to reflect this. I'm running a maximum spark advance of 18 degrees. I have the Spark tables from a 2003 Cobra. It shows the maximum load at 150%. What parameter do I change to get the EEC's calculation of load to reflect the increased airflow produced by the turbocharger? Thank you.

Odrapnew
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Location: MN

Re: 2003 cobra spark tables

Post by Odrapnew » Mon Jun 30, 2025 2:03 pm

What MAF are you running?
If not stock, did you updated the MAF transfer curve to match the sensor you are using?
'89 Notch, 304(5.0), Novi2K@13psi (currently not installed) TFS heads, TFS Stage 1 cam, Cobra intake, 60lb'ers and Pro-M 80mm, longtubes_x-pipe_flowmasters and more crap that doesnt increase power. 437rwhp@5500(and still climbing)/438rwtq@~4000rpm Tweecer R/T w_BE and EA

pkm48193
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Joined: Sat Apr 20, 2024 5:13 pm

Re: 2003 cobra spark tables

Post by pkm48193 » Tue Jul 01, 2025 3:46 pm

I upgraded to a 2003 Cobra MAF and programed the MAF transfer function into the EEC-V. Everything works, but the maximum "Load" is only 80%, so I had to change the spark table to match this. I am asking because the 2003 Cobra spark table shows a maximum "Load" of 150%. I am using 42# injectors.

jsa
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Re: 2003 cobra spark tables

Post by jsa » Tue Jul 01, 2025 4:58 pm

This pdf is an explainer on load calcs, courtesy of Dan-HM from Yahoo EECTuner group.

Which "load" are you logging?
LOAD-LOAD% & LOAD Scaling.pdf
(9.96 KiB) Downloaded 397 times
Cheers

John

95 Escort RS Cosworth - CARD QUIK COSY ANTI / GHAJ0
Moates QH & BE
ForDiag

pkm48193
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Posts: 5
Joined: Sat Apr 20, 2024 5:13 pm

Re: 2003 cobra spark tables

Post by pkm48193 » Wed Jul 02, 2025 9:55 pm

Thank you.

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