Engine Best aftermarket MAF?

Mustang5L5 said:

I like the idea of getting a Pro-M with the 30-point transfer function sheet.

Originally I was going to ditch the MAF completely once I go to the aftermarket ECU, but if it can be used and make tuning easier then perhaps I will go that route. What do you think @a91what


Initially the MAF and A9L would just be to get the car up and running and work out bugs. The car doesn't even need to run well, i just want to make sure the motor is good to go, i can get the cooling system all set up, and charge the AC and get that functional. Once that's all squared away i'll wire in the MS3x

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I set my M112 blower project up with a maf on ms2, was easy to tune with. I am a big fan of a properly setup maf system on MS, I will be using maf\sd to tune my current project

I wouldn't recommend buying a MAF tuned for injectors, espeically anything larger than 24s if your ECU is calibrated for 19s. You need a MAF which is set to measure the estimated air mass flow rate for your engine, plus a margin of safety (+20% to 30%), and the flow vs. output voltage calibration sheet to go with it. Then you need a means of updating the MAF transfer function in your ECU along with the injector flow rates. This will solve a lot of the typical driveability problems people have when upgrading injectors and MAFs. MAF sensors with shifted flow curves to correct for the increased injector flow rates is a hack solution, and it becomes more un-workable the further you get away from the base injector size in your ECU. The best solution is to recalibrate the ECU with the correct data for the components installed. I hate to see you waste money on a questionable work-around when you've put so much time and attention into everything else that you've done with your car.