Price: $82.99
Pros: increase of flow and throttle response
Cons: there is a slight lost in higher rpm torque
Recommended? Yes

Comments: the TS is very good product and it increases the response and increase in power as well

Price: $1.00
Pros: SLIGHT POWER GAIN AT LOW END
Cons: NOISE
Recommended? No

Comments: I FOUND IT ON A USED RUBICON AT WORK AND DECIDED THE BEST WAY TO TRY ONE. HAVE NOT REALLY NOTICED ANY DIFFERENCE.

Price: $80.00
Pros: Adds a cool little whistle sound
Cons: Directions not very clear for the WJ.
Recommended? Yes

Comments: Adds a cool little whistle at around 2000 RPM. Helps the performance of my FIPK a little bit. If you have the cash, buy it. But don't make it a priority.

Price: $82.99
Pros: increases throttle response and gives the Xj a bit more grunt when u take off
Cons: the high rpm hp goes down abit but thats a minor thing
Recommended? Yes

Comments: the airaid poweraid throttle body spacer is a another great power add to any truck, the install is very simple to do it only took me about 20 mins to do. and after installing it and started my cherokee up i could tell it uped my throttle and when i gave it couple revs and it made my exhaust tone deeper than i though ,and when i took it for a test run i felt abit more power as well nd my mileage went up abit as well even though ive been told that the spacer was garbage nd it doesnt do ****, i say its worth it

Price: $82.99
Recommended? Yes

Comments: BOLT ON HORSEPOWER!

Price: $25.00
Recommended? Yes

Comments: Noticable performane diffirence in low RPM's and a great whistle that has encouraged me to put of a turbo

Price: $69.00
Recommended? Yes

Comments: I installed my Airaid intake, and this at the same time. So I don't know what its like by itself.

Price: $74.00
Recommended? Yes

Comments: really whines in 2nd and third gear......really gives you more throttle response.

Price: $75.00
Recommended? Yes

Comments: Very easy install with onlt a slight noticeable increase in power. Takes a little to get used to the sound at certain RPMs.

Price: $69.95
Recommended? Yes

Comments: I have the Poweraid Throttle body spacer & it seemed to give me a little better power not bad

Price: $60.00
Recommended? Yes

Comments: sounds great added a little power and a little better mpg i think...or it may be in my head

Pros: Whistle, more torque
Cons: cost
Recommended? Yes

Comments: Easy quick mod that is great for improving torque.

Price: $80.00
Recommended? Yes

Comments: No improvement with the throttle body spacer. Many people complain about the annoying whistle it creates but I don't mind it.

Recommended? Yes

Comments: Not much power difference but seem to get a little better mileage. Easy to install.

Price: $97.00
Recommended? Yes

Comments: combined with a K&N and Flowmaster, they work perfect for hill climbs, mud whumpin and dirt road bombing!!!

Price: $95.00
Recommended? Yes

Comments: I installed the PowerAid throttle body spacer and I definitely noticed a slight increase in mid range torque. Also, every time you get on the throttle, you hear it whistle. It kind of sounds like a turbo, and it sounds great with the Airaid Cold Air Intake I have.

Price: $74.99
Recommended? Yes

Comments: The Poweraid® TBS concept was developed to enhance mid-range power, torque and fuel efficiency. The unique dyno-proven Helix Bore of the Poweraid® TBS causes a spinning action of the incoming air-charge as it passes through the throttle body. This extremely beneficial air-charge carries all the way into the combustion chamber, producing a super-atomized mixture, which produces tremendous gains in mid-range power and overall efficiency. This is the key element to the horsepower success behind each Poweraid® TBS.

Poweraid® Throttle Body Spacers are manufactured from aircraft quality billet 6061-T6 aluminum. Each kit includes all the necessary gaskets, hardware and precision brackets to maintain proper throttle and cruise control geometry. Installation is 30 to 60 minutes with no drilling or cutting required. A Poweraid® TBS is the ultimate intake system combination when teamed up with the exclusive Airaid Intake System.

Price: $20.00
Recommended? Yes

Comments: Decent product, but no real noticeable gains in performance or fuel economy. I picked it up used for $20 to give it a shot, but didn't really notice any difference in performance.