Originally Posted by 04rangernyc
Has anyone done anything about the speed limiter. I have an 04 XLT 2.3 and the limiter cuts on at 90 MPH. is it worth trying to do anything about it?
NO. Check what you've got for tires on it. Then look up the speed rating online. You may be over doing it even going 90.
My 4.0L/5spd man. cuts out at 90 too. I could adjust that and the rev limit with my Superchips programmer,..and I have T rated summer tires. I won't find out but it hits 90 easy and in 5th is nowhere near 6,000rpm. I've wondered what it could do..probably hit an aerodynamic wall though but it may be able to come close to the tires limit (118). But in sane legal driving on the road here anyways, you shouldn't ever be reaching 90 even. The rev limiter is good engine protection for a manual equipped vehicle.
All this out the window for racing..legal racing hopefully on a track. But there if you want to go fast the better aerodynamics of a car lets stock small 4 cylinder cars hit 130 with ease on a road racing circuit.
Lots of tire info here. Scroll down to Speed Ratings. L-75MPH, M-81MPH, N-87MPH,etc. Tough looking mudders are not meant to be used at Talledega Speedway. At the bottom of this page there are more links for even more good info. http://www.tirerack.com/tires/tirete....jsp?techid=35