Blow-Thru 42lb MAF

I'm rather amazed that the car ran at all on the preset fuel tables since you did not mention a chip of any kind. I'm also suprised that it idled with just the meter installed and no chip. You consider that even though this meter is supposedly calibrated to run on the stock EEC with 42 lb injectors, I can't say that I've ever seen this work first hand. The injectors minimums and break points are ALWAYS going to be wrong until you get that thing tuned. It makes no difference whatsoever what meter you decide to toss in with 42 lb injectors. The differences in the injector pulse minimums and breakpoints are WAY outside of the EECs adaptive ability when comparing 19 lb injectors with 42s.

The only alternative would be a chip, hand-held tuner, etc.


As for chipping SD... Good luck man. If you find a place, be sure to post it up. Roughly 10 or so years ago, I knew of such a place and chipped one for an aftermarket cam. It worked great! No luck since then though. Call around in your area and see if anyone still has any of that old software lying around.


Good Luck


P.S. I've heard mention that the TwEECer can be used to tune the SD EECs. You'd have to confirm. IMO though... TwEECer = HUGE PITA

Others have more patience than I though.

So there's a PMS in the mix!

The reason it's probably running alright with the PMS plugged in then, is because when you're in open loop, the PMS reverts to piggy back mode, correct?

If so... then the open loop fuel tables it's using are the ones you've already programmed into the PMS (along with any pulse modifications for the injectors).

Any time you pull the MAF, the EEC reverts to whatever prebuilt fuel table is present in the EEC. Whether its the one from the ECU or the one in PMS though... you'd have to tell me as I've no idea how you've got everything built and/or triggered.