HornetJK

Are throttle body spacers going to give you enough horsepower for the buck? If so what brand would you recomend?

ronjenx

Not worth it. The fuel is injected at the intake valves; too far from the throttle body for the spacer to do any good.

lang1864

yea not worth it at all

burnout88

Have any of you actually used it or this just your opinion?

GoodysGotaCuda

Many have and the benefit is at a very high rpm, and that is MINIMAL benefit. When you add volume to the intake you will lose low end torque (lose air speed, what we use most). It's like a sea-saw. Overall it's useless to the 3.8L, no benefit, they are good money waster and noise makers though...

This holds true for most of today's engines. Carb spacers used to work because it promoted air/fuel to the engine. Again, high rpm gain, low end drop...

ronjenx

For me, it's knowing what it is designed to do, and how it can't do it for fuel that's injected so far down the line.

My opinion comes from having read so many reports that it was ineffective.

I may change my opinion if someone will post several closely timed before and after dynos that show it does some good.

GoodysGotaCuda

Usefulness would do it for me. It'd drop torque at daily cruising rpms. Disadvantage to 99% of the JKs on the road. Unless you are taching it out at every light

ronjenx

Yeah. Me too. Most things that claim to add horse power, do so at the high end.

bigbluejk

I think its worth it.... if you like your jeep sounding like a whistle it is a great way to do it.

GoodysGotaCuda

We know that! Lol but my reason in mentioning that is they say it adds horsepower, but no mention of losing torque...