does it worth the price to get an RPM extender from ford? a frend is selling it to me in 150 bucks! what it does?
an other cuestion! i sold my cobra computer to get back a A9L did i did good?
Well, i agree with selling the cobra computer and switch to a regular one.
Why do you want the rpm extender? It's only useful if you are going to need to go past 6200, and if you are going past 6200 i hope it's not with a stock shortblock.