Computer tune needed for larger MAF?

[88 Fox GT]

My engine used to be using a T4MO (it's originally a '94), but I converted to Fox electronics and an A9P computer I bought on eBay. It has a 75mm MAF, will I need to tune this A9P to work with the larger 75mm MAF? Or is it just injectors that need a retune to use? Thanks.

 

[Funanin]

you are usually ok if u get one that is precalibrated for the injectors u have. It will run BETTER with a tuned ECU, but its not required and 9/10 people dont bother. Basically with newer MAF's, they are programmed to fool the ECU so u wont have to re-burn it. But this can cause drivability problems (emissions, spark advance, bad air/fuel ratios, ect) so its up to u basically. Give it a shot the way you have it and see if u like it. If it runs like ass, then get a twEECer or reburn ur ECU

 

[Funanin]

by the way, i was planning on getting american thunder cuz my flows are like 5 years old so i think its time for new ones. How do u like urs? I dont want something that is ground shaking and wakes up all my neighbors when i come home at night. But i also want it to sound like a classic muscle beast. My brother has some bassani x-pipe thing with some kind of crappy exhaust on his cobra and it sounds so assy, it pops and crackles and really sounds like crap. I just dont want that.

 

[88 Fox GT]

With the T4MO he had this MAF and 30# injectors (prepared for a 347) and it ran fine. I don't know if he tuned it or not though.
I hope it runs good, I don't have the extra $500 to buy a tuner right now. I'm just trying to get her going the way it is. lol

The American Thunder sounds amazing. Not loud by any means either. The idle is just great, doesn't rumble the ground or anything. No pops or cackles either. Just a very tuned Flowmaster sound.

That's what it sounded like on the donor car. I took it off of it and will be having it custom fit on my '65 this weekend.

Thanks for the help.

 

[Funanin]

cool thanks