Price: $80.00
Pros: Quality workmanship, allows slightly less pressure drop across intake manifold, engine revs a bit more willingly, especially in higher rpms
Cons: Customer service is poor, core return not likely to actually happen - just keep your TB and sell it outright
Recommended? Yes

Comments: Overall a good upgrade for less than $100. Don't expect the core return to happen - just keep your existing TB and sell it outright. Breaths a bit better at higher RPMs and results in less pressure drop across the manifold. Not much, more info in TJ CAI FAQ - only saves about 2 HP at WOT. Definitely a better option than name brand expensive options.

Price: $240.00
Pros: Custom brass throttle blade – 50% thinner than stock Bored to 63mm – stock necks down to 52mm Halved throttle shaft w/ low profile high strength screws Semi-polished air inlet Easy to install in about ½ hour
Cons: Customer service is absolute garbage, core's are not refunded. DO NOT SEND YOUR CORE TO THIS GUY
Recommended? Yes

Comments: Custom brass throttle blade – 50% thinner than stock
Bored to 63mm – stock necks down to 52mm
Halved throttle shaft w/ low profile high strength screws
Semi-polished air inlet
Easy to install in about ½ hour

With a stock 4.0L motor I noticed a more full response throughout the gear range on my 05 LJ with a 6 spd. Acceleration is improved in city and freeway driving in that the lag in response normally felt when trying to accelerate in a situation such as passing is greatly reduced. I would deffinately recommend this product and the price is much lower than brand name competitors. I would warn anyone buying one of these thought that the customer service from extremefi is horrible. They didnt refund my core for two months and when I got upset with them about it they refused to refund it and made me pay shipping to have the core shipped back to me. Four months later, still waiting on my core. If you buy one of their throttle bodies, do yourself a favor and sell your core here on JF.

Price: $100.00
Recommended? Yes

Comments: works fine, replaced plate screws with countersunk screws for just that much more air flow

Price: $90.00
Recommended? Yes

Comments: So far, it seems like it's freed up a lot of horsepower. It's easier to pass on the highway, because it seems to downshift much quicker and with more oomph.

Price: $50.00
Recommended? Yes

Comments: Works well. Easy install. Notice a quick "whistle" on acceleration. Had to provide the factory one as a replacement. Easy to work with.

Recommended? Yes

Comments: they have used factory throttle bodies that they bore out, you send them your old one in the box they ship you the bored one in. everything lines up perfect, and it looks completly stock. real simple bolt on. all the intake/performance stuff people argue about? youre making the hole bigger that lets air into your engine. seriosuly, why wouldnt this work. i can feel a difference and i recomend buying this.

Price: $80.00
Recommended? Yes

Comments: Helped throttle response greatly and doesn't whistle like i've heard the other bored out TB's do.