Power Chips who's done it .

[Griffen]

Just wondering has anybody installed power chips to wranglers or grands
What process and problems occured

[MYTJeep]

I put a unichip in several cars and they have made a huge difference in performance but when i looked into what is available for tj's i couldnt find anything withreal dino figures and proof so just went exhaust and air filter etc and there is also boring out the throttle body before you start looking at engine internels.

but i remember going on pirate and ju forums and got feedback from guys in the us and the chips that are available for tj's havent been that effective.

[Gojeep]

There were so many problems with the chips in the USA with the ECU giving up that I would not touch them. The ECU is fully sealed in silicon to make them waterproof and why they can live under the bonnet. You have to cut away this to swap chips. The only way to do it probably is to use a separate ECU that plugs before the stock one giving changed inputs to it. You then still have to option should anything go wrong that you simply un-plug the add on ECU and everything is back to stock. They are made by Unichip and had some out for the OBDII when I spoke to them and were about to release the OBDI version which they wanted me to test for them back then. But as I dont own a dyno so I missed out You have to be careful with the power chips too as they gain most performance from advancing the timing which can cause pinging on our sub standard fuel and also a hotter running engine!

[Cpage66]

Billsta pointed me to this in a roundabout way...http://www.kennebell.net/accessories...optimizer2.htm

I'm taking my computer over with me in July...

[LEXX]

Not the best of ideas Girff, unless you take it guys who specialize in this sort of modification.

Also a good option if your swaping out motors then look at changing the ECU, but really look at other things first before you go playing around with the comp inputs.

[Griffen]

mmmm nuff said i think i'll play with some other toys

[zzzz]

You can get the head ported and that will cost under $1000 and will net you at least 16hp.
That is pretty much guaranteed, not a bunch of marketing driven magical numbers the chip suppliers like to quote.

Read this site if you are interested in power ideas for the 4.0L
http://www.jeep4.0performance.4mg.com/

In particular the section on ported head.

cheers

z