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Your cart is empty.Computer Designed. Road Tested For Proven Results. Proven To Out Perform The Competition. Design Conditions Air Flow. Reducing Turbulence. Smother Throttle Response. Higher Intake CFM. Better Fuel Economy.
GATOR
Reviewed in the United States on October 27, 2024
The adapter is great ,wrong instructions and missing hardware made contact with manufacturer sent. Email . They finally sent new instructions but still no hardware had to go to store and buy my own.
Customer
Reviewed in the United States on April 10, 2021
Fits good bolts that come with it work. Have to grind the top of the fan shroud to make it fit no matter what. Doesn’t take too long. Barely whistles. Just note...do it when the engine is cold. The antifreeze line at the bottom of the throttle body will have to come off, will have to be extended by 2 inches...and it will leak antifreeze. Overall it’s not bad for the price. Noticed bottom end torque immediately. Fuel mileage is the same but I do idle a lot...
Jandjauto2474
Reviewed in the United States on May 6, 2020
Was great price
Michael Robinson
Reviewed in the United States on December 14, 2019
Idk how it works. I sold the truck and it’s in the back of my new one.
Robert
Reviewed in the United States on October 7, 2018
Fairly easy install. The coolant hose on throttle body needs re positioned to make install easier. Felt better acceleration in mid range.
Trent B.
Reviewed in the United States on March 9, 2017
I've had this installed for about 2 months now, waited to write review till I got a feel of it. It says no whistle, that's a lie. 2004 Chevy Tahoe 5.3L, and it whistles occasionally. Now I don't mind it, but figured you should know.There is virtually zero gain in fuel economy, power, or torque. The one thing that this does that warrants it being ok, is I've noticed when starting from a stop and accelerating uphill, it's quicker. When going up a steep grade on the highway, the engine doesn't seem to downshift as much as before.Hope it helps.
Pops_Silva_Fox
Reviewed in the United States on May 24, 2013
The Trans-Dapt 2566 Swirl Torq Spacer GM99-00 was delivered in appropriate packaging. The included instructions were not as clear as my experiences with similar but more expensive spacers. Being familiar with installation, the part was very easy to install. There is some whistle during acceleration, but not as loud as other spacers. There is some feeling of increased torque, but without being able to do a dyno test, I am not sure of the increase in power and performance, including any increase in gas mileage. However, for the relative low cost, compared to other brand names, I would recommend purchasing this over the brand names.
Ryan L. Schick
Reviewed in the United States on November 18, 2009
This is the second Trans-Dapt throttle body spacer I have installed. Both times the spacers did exactly what Trans-Dapt claims they will do. I installed this on my 2003 Chevy Silverado 5.3 V8. Before installing, I didn't feel a noticable jump in torque until I got above 4,000 rpms. Now torque starts taking off around 3,300 rpms and climbs from there. Since installing, my transmission doesn't downshift as often either. The increase in torque doesn't require the lower gear as much. I have not dyno tested, but seat of the pants tells me there is a noticeble increase in both torque and horsepower. The box says you can bolt on more horsepower in less than an hour. This is pretty accurate. I did have to trim the plastic fan shroud to allow for necessary clearance. Also, there is a coolant line running to and from the bottom of the throttle body that gave me a little difficulty while installing. Other than that, the instructions were crystal clear and easy to follow. I have yet to run a full tank of gas to determine mileage increase, but from past experience, the spacer will give a noticeable bump in mileage as well.Overall, this is an easy bolt on that pays for itself.
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