Reviewed By Russ K (LAKE HAVASU CITY, AZ) Reviewed for a 2001 Jeep Wrangler —6/5/2015 9:08 PM
Everything I've done has helped.
Reviewed By Richard F (Riverside, WA) Reviewed for a 2001 Jeep Wrangler —2/21/2014 3:04 PM
I have a 2001 Jeep Wrangler with a 4.0L.5.5" of lift,35"tires,4.56 gears,160,000 miles.Had on a couple of weeks. Haven't noticed any power gains. Slight increase in throttle response. Almost 2mpg increase. Overall good.