Quote:
Originally Posted by TUF-427
Peter if yours is a MAF equipped engine either Usa or Australian originally it will tune itself to mods within reason.
Heads ,cam, intake,throttlebody,injectors, is the usual road travelled for normally aspirated 302s,with numbers around 300 rwhp attainable without too many bad manners.
I have all sorts of performance Efi parts lying around now I have gone to 8 tbodys if your interested..
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This is partially true from my understanding.
Check out these links to Ford Forums:
Part 1 EEC-V
http://www.fordforums.com.au/vbporta...article&id=167
Part 2 EEC-V
http://www.fordforums.com.au/vbporta...article&id=168
Part 3 EEC-V
http://www.fordforums.com.au/vbporta...article&id=172
Part 4 EEC-V
http://www.fordforums.com.au/vbporta...article&id=173
These four threads detail how the EEC-V works.
The EEC-V will adjust on part throttle (Closed Loop) for mods but reverts to open loop at WOT (Wide Open Throttle) which is fixed map. So if the mods aren't too wild then the computer will adapt at idle and part throttle but not full throttle as that mapping is fixed. WOT would need to be retuned/reflashed. One advantage of factory EFI is it's ability to learn as engine components wear out. This is why mild mods won't affect the EEC-V too much as it relearns idle and part throttle fueling to return the ratio back to 14.7:1. The problems start when the mods get too much for the engine to cope. This will skew the short term and long term fuel trim maps which starts to throw up odd numbers which is out of the scope of the EEC-V to handle properly as the adaptive programming is only designed for engine components, such as injectors etc, wearing out, not wholesale changes to the engine set up. It's at this point you'll need to get the EEC-V reflashed or go aftermarket such as Motec or Autronic or similar. The one advantage GM does have over Ford is it's ability to be reflashed as the GM stuff is easier to mod than Ford. Add to that the amount of GM tuners who do actually tune properly as apposed to the Ford boys, some of which rely on generic flash tunes from CAPA instead of actually tuning themselves.
If you want to do mods to a EFI Ford you need to factor in if the EEC-V will cope. It's been the experience of people I know that the Ford 'puters don't like mods. The EEC-V wasn't designed to do it. EEC-IV was much more flexible to mods as I understand it and it would cope better than the later EEC-V. It wouldn't surprise me if Ford made the EEC-V harder to accept mods to stop mods done to their vehicles.
The other way is to buy a kit that comes with a flash tune.
The above links will give you a good understanding how the EEC-V works.
There is more to this than just changing heads and cam and expecting everything will work just like it did when it was stock.
Btw, very cool engine bay TUF 427
Cheers
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