Crawler

anybody run programmers or chips in their xj's? any good?

brutalxj

I want one real bad the thing that has held me back. In my Quadro tech meg the add for the chip says to run an after market MAP sensor but the add for the MAP sensor says not to use it with a chip!!!!!!! So confusing sorry to hijack your thread but what do you all need to run then????

no rdplz

They don't really do anything for the XJ's. If you want what the chip is saying it'll give you, do a 63mm bored throttle body.

brutalxj

Well they say they change trans shift points? They don't even do that. I have alot of friends with chips in alot of other vehicles and it dose alot for them why would it be diff for an xj

no rdplz

If all you do is ad in a chip, you're not gonna get much from it with an XJ. It's just how they are. Like I said, for less money and better results, go with a 63mm bored tb.

Bustedback

Do not waste your money on any kind of preformance chip.

rich

A chip for a xj is a waste of money I have a superchips hand held, I tried the performance program and it really does nothing, I only use if for the read out of all the gauges and O2 sensors and etc when running plus you can program your tire size for the speedo.The shift point change also doesn't really work good either. The only chips I have seen work for sure are the ones for the cummins

brutalxj

But if you have bored your throttle body have a intake and exost along with bored 30 over and real good plugs and wires it still wouldn't do anything?

jmm0122

I have a jet performance chip. Total waste of money.