Can I use a 19 lb maf with 24 lb injectors and not run rich? I will be using an a9p pcm, gt40 p's with 1.7 rockers and an e303 cam. any help will be appreciated.

 

you need a tune if you do that. so....no

 

How much do tuners cost. cant really find one on the internet for a 91 mustang.

 

Just get the right one

 

the right one what? mass air meter. that will still need a pcm tune. i was trying to get around that somehow because tuners are expensive. I just cant find one

 

YOu need a MAF calibrated to 24lb injectors......or if you have LOADS of time for learning a tuner like a twEEcer and a laptop....then you can go that route to figure everything out. From experience they are a bitch to learn it took me all winter to play with it to a pont whereI was comfortable baggin on it.

 

your 19's will support that setup.

 

read again, he has 24lb injectors and a 19lb MAF, Just spend 125 and get a C&L meter for 24# injectors.

 

I could always use the 19's though if they will work. I was under the impression that upgraded injectors were needed with a hci swap. If I dont need to upgrade that would be great.

 

19s are good for about 280-300 at the wheels. The 300 mark is pushing their limits though.