What are some good performance mods for the 5.0L Explorer?

[RTStork]

I have a K&N, and a Flowmaster dual exhaust. Please tell me where I can get some more performance parts. I'm especially looking for a cold-air induction kit and some underdrive pulleys. Thanks!

 

[youl luz]

well i dumped the last 2 cats on my truck and it made a big difference.. i also have a 75mm bullet from pro m.. that worked out good also.i did the hypertech power programer at about the same time as the mass air.. i picked up alot...i have dual dynomax mufflers dumping at the axle.. next round of mods will be ditching the last 2 cats and making a custom underdrive crank pulley..there is no kit for pulleys for our trucks because the balancer and the pulley are 1 piece..so what you have to do is cut off ONLY the pulley part then machine a smaller pulley out of aluminum..i'll post on here when i get around to doing that and let everyone know how it turns out..

 

[RTStork]

If the pulley turns out ok, I'll be happy to purchase one from you. How did you remove the cats? what did you put in their place? and didn't the check engine light come on with the OBDII?

 

[JoeC5]

supercharge it

 

[youl luz]

Originally posted by RTStork
If the pulley turns out ok, I'll be happy to purchase one from you. How did you remove the cats? what did you put in their place? and didn't the check engine light come on with the OBDII?

well on 97's all you have to do is un-bolt the cats then what i did was make a new flange and started my new exhaust from there... the check engine light only comes one when you pull the front cats off..to fix this i ordered some mil elminators from dallas mustang that tricks the computer into thinking the cats are still there...i'll let you know about the pulley