Yeah it requires you to run 93 octane but im pretty sure you can use 91 octane cause some states dont have 93 octane.

 

I ran a '93 MP 5.9 PCM on my '94 5.9 with 91 octane and it pinged like a *****. So that's why I'm running the 5.2 with 60 psi.

A.J.

 

U guys are killing me, I have my kegger done for awhile now but haven't had a chance to install it yet. So on a 5.2 that I am building to tow with, I'd be better off with the 5.9 mopar performance pcm? Thats sorta the last of piece of the puzzle of the motor I am building- though after going to a car show I have a weird desire to get a blower

 

If you have a 5.2 use a stock or MP 5.2 PCM. If you have a 5.9 use a stock or MP 5.9 PCM. BUT, if you have a 5.9 you CAN use a 5.2 stock PCM if you can raise your fuel pressure to compensate for the smaller displacement 5.2 PCM running the larger displacement 5.9 engine.

A.J.

 

thanks, thats the next thing on the want list