Hi Fud,
I am told there are lots of ways to improve performance. Haven't done much myself yet other than intake snorkel so can't comment on how much better.
1) Put on bigger dia. exhaust pipe. Heaps of back pressure on XJ diesel easily fixed. You shouldn't lose torque when you do this on turbo diesel, you gain some as turbo spins up better.
2. Intake bigger, fit snorkel with ram head, bigger air filter and especially a bigger intercooler. Lots of custom work here but more air == more power for diesel.
3. Take your Jeep to Berrima Diesel. I can't remember who told me they do a job on the injectors and pump to increase power. Maybe ask them direct.
4. Fit an aftermarket chip. Powerchip make one and claim 102kw and 357nm. Not bad for 2.5L oiler :D :D
see:-
http://www.powerchipgroup.com/chips/...=1&cid=Jee0003
I think they turn the turbo boost up when they fit the chip.
All of these changes probably improve fuel consumption too.
Just check you haven't got the accelerator pedal mount bent. Every XJ diesel I have seen has lost the last 1/3 of accel travel.
Remove pedal assembly, straighten the mount then put a block under the mount so it doesn't bend next time you push the pedal hard.
When you increase power you might consider a bigger radiator too. Extra power on a turbo motor usually means more heat too.
Another way to get a little more power might be to try running a really big capacity radiator and fit electric fans then remove engine fan. That huge thing gobbles up plenty of kw most of the time doing nothing.
[ 29 October 2002, 01:40 PM: Message edited by: dxj ]
Increased Performance Diesel XJ
