[Merv and Sharon]

For those of you with Ford Mustang or similar variants of the 302 and who contemplate using a MassFlow EFI system be careful about planning the EEC/ECU that you use.

I have a Mustang 5.0L which came with an A9P EEC. Now this is a fine EEC, but it was designed for an automatic vehicle and harness. The A9L is generally regarded as one of the best things that Ford ever made and is designed to be used on a manual car and manual harness, where as the A9P can be used with some care on a manual or auto. I gather that there are some differences in the acceleration 'curve' in the A9P.

However, IF you go the MassFlow route be warned the A9P will not work properly with their chip and set up. Acceleration is not smooth and the idle hangs. They assume you have the A9L EEC. Two solutions: buy their EEC or buy an A9L on eBay and put it away for later. They are becoming quite valuable and hard to find good ones! A9Ps are more easily found.

I just offer this info for those of you with similar setups and similar ambitions. Peter H and I have spent a lot of time 'tuning/ the A9P to find that it just will not work with the MassFlow software properly.