Price: $50.00
Pros: supposed to give better gas milage? i donno. cant tell. it whistles though... lol
Cons: nothing.
Recommended? Yes

Comments: it was cheap. so i thought i would give it a try

Price: $120.00
Pros: good power
Cons: gas mileage
Recommended? Yes

Comments: great product definatly recommend

Price: $90.00
Pros: Added suction
Cons: Not a huge difference, but noticable
Recommended? Yes

Comments: Definitely a difference, although not huge. Find a discounted spacer if you can

Price: $64.00
Pros: it makes a noticeable difference in low to mid range torque
Cons: it is a little loud sitting at lights
Recommended? Yes

Comments: It is a Power Aid throttle body spacer and took half an hour to install came with everything i need to install even a extra gasket for the throttle body. Doesn't effect gas mileage either positive or negative. this one doesn't have the high pitch noise when acceleration.

Price: $99.99
Pros: None, maybe the sound if you like that.
Cons: Waste of money
Recommended? Yes

Comments: This is for a '02 WJ w/ 4.7. The brackets provided were horrible, I had to make one piece myself. If I didn't spend 100 bucks, I would have thrown it away but I made it work. I don't think it did anything performance wise, it just whistles. Don't waste your money.

Price: $55.00
Pros: Includes all hardware for Wrangler or Cherokee auto or standard trans.
Cons: Available in the buff only
Recommended? Yes

Comments: New 2.5L,4.0L/4.6L stroker T-Body spacers. Bored to match the 63mm T-Body. Add to the flow, lower the torque curve by extending the distance between the intake valves and the throttle body(engineering!). The same as lengthening the intake runners for all the older motor heads.

Price: $35.00
Pros: Gave me more horse power
Cons: Still have to match the intake manifold size to match but not a problem with the product.
Recommended? Yes

Comments: Works great got it cheap and came with gaskets.

Price: $75.00
Recommended? Yes

Comments: No real notice...its a pretty good paper weight if you ask me haha. nothing crazy

Recommended? Yes

Comments: Throttle body spacer that came wtih my AEM Brute Force CAI. Not sure how much power it adds with the CAI and my new exhaust because I never drove without it after all the mods.

Price: $65.00
Recommended? No

Comments: Don't do it. If you doo save original bolts that are shorter so you can un do it.

Price: $50.00
Recommended? Yes

Comments: 1" Throttle body spacer, very easy install and seemed to improve performance.

Price: $58.00
Recommended? No

Comments: TransDapt Torque curve TBS from summit. Supposed to give you more torque in the power band. I see a small increase, but what i see more is a jump in fuel econ. from 12 to 15-16 ish

Price: $70.00
Recommended? Yes

Comments: .................................................. .........................

Price: $65.00
Recommended? Yes

Comments: This was an easy product to install, it took about 10 minutes to put it. Just remove the air flow tube from the throttle body, the put the spacer in, screw tube back down and your set. Added about 10 horses.

Price: $75.00
Recommended? Yes

Comments: Helix 62mm TBS great addition that works well with , AEM Brute Force Cold Air Induction System.Noticed increase in HP and torque, however a mild drop in milage, well worth it.

Recommended? Yes

Comments: came with my Jeep at the time of purchase.......................................... ....

Price: $65.00
Recommended? Yes

Comments: Not a huge difference over all. it helps with a little bit of low-end torque.

Recommended? No

Comments: Caused some TPS problems untill I dropped the idle speed. Since then has run great.

Price: $70.00
Recommended? Yes

Comments: really works well. it was a cheap upgrade and works well...took 5 min to put on. . .

Price: $80.00
Recommended? Yes

Comments: I had ordered a Helix Power Tower Plus a number of years ago and actually installed it last week. I do notice a slight increase in mpg (went from 17.1 to 18) i also have a K&N which supposedly makes it whistle under acceleration but its not too bad