WebI put your stage 3 on my 2011 wrangler 3.8 liter. I’ve had it now for 3 tanks of gas and have seen great gas pedal response. I have replaced all exterior plastic with steel bumpers, fenders and a winch etc. I also run 35 inch tires and still have gotten 4 miles better gas mileage which I think is a big plus!! Just thought you’d like to know. Web22 nov 2024 · From the XJ Wiki: In the middle of the 1999 model year, vehicles with the 4.0 liter (242 CID) engine received a much improved intake manifold. This was done to help counteract smaller exhaust porting on the latest casting of cylinder heads, which was done to meet more stringent emissions control laws.
1984-2001 Cherokee (XJ) Headers Quadratec
Web30 lug 2024 · A combination of a long downpipe imparting leverage on the header collector and a lean-running injection system that creates high exhaust gas temperatures are two … Web2 feb 2004 · It seems that our mileage improvement was very apparent at lower speed, but was sort of washed away in full-throttle jaunts. The best mileage improvements were recorded on 60- to 70-mph runs. d link online shopping
Jeep Performance Chip - Thorton Chip Tuning
Web30 lug 2024 · With a few simple modifications that can be performed all at once or one at a time as funds permit, you can up your HO 4.0L's power by 20 hp and 20 lb-ft at the rear tires. And even the low-po '87 ... WebHow to put a 1997-1998 Jeep Grand Cherokee (ZJ) Fuel Tank into a 1997-2001 Jeep Cherokee (XJ) to increase the total fuel capacity from 20.2 Gallons to 23.0 G... Web9 ott 2012 · i have been told that it gets better gas mileage and the people that say that run premium fuel but the improvement in mileage makes up for the extra cost. i know a few people with xj's that run 4.6 or 4.7 liter strokers with correct gears for their tires and corrected speedo's that say they getter mileage than my 4 liter gets but i get crap for … crazy machines inventor\u0027s training camp