need alot of help with my new 99 cobra

i just baught a 99 cobr. first thing i did was buy a tuner <diablo predator> i think i set the rev limiters to high the call is fully stock only thing on it right now is cold air induction , need to no what the limiters shoud be set at for a stock cobra. also looking to get new gears for the rear and was wondering if there is any truth to the fact that cobras rev out higher and i should go with a bigger gear then 390s
 
well

Keep the rev limiters at 6800, no reason to rev past that. I don't understand what you are talking about in 3rd gear thing. :shrug:

Yes you have an 8.8 rear end and need the standard ford 8.8 gears even though it's an IRS. checkout svtperformance . com and read the FAQ section on your car. Then AFTER READING THAT, if you still have any questions, ask away.