foxrider07

Do or don't these have a positive affect on a 4.0?

JeepingDan

https://www.cherokeeforum.com/f59/th...spacer-105041/

lovemeblue4x4

I just ordered an air intake for my XJ. It worked for my TJ. The throttle body spacer makes a little whistle when u step on the gas.

IZAREBL

air intakes look cool, and thats about all they do for our 4.0s

DIRTDOGXJ

They both absolutely, positively, without a doubt have a positive effect on our beloved 4.0's(4.7 in my case)............if you don't mind paying $100-200 per horsepower. I have both, only because the PO spent his well earned money on them. I took both off for a day and drove around awhile. I couldn't tell a difference at all. Honestly, I think you'd gain more horsepower from deleting your front sway bar.

bigvig

I agree totally, because adding a TBS adds weight, and weight slows you down. So if you took out your sway bar instead, it would most certainly have more advantage than adding a TBS. And much cheaper too!

toogreat

if you want power just let your headlight fluid out to free up some weight dont waste your money on a spacer or intake. get a k&n drop in filter and forget about it

AKinHI

In addition to draining your headlight fluid I would also suggest stripping all the paint and removing the windows. All they do is blur your vision a bit.

Bstrom650

There's free horsepower in your vehicle right now - dunno the hp gain formula based on weight reduction for a Cherokee, but if you strip that vehicle of everything but the essentials it oughta just fly!

Otherwise, spend hundreds of dollars on full flow exhaust, upgraded intake and injectors, bored throttle body, cold air intake, a hotter ignition, and all synthetic gear oils.

Same difference...

ThunderThighs

Yeah you have to remember though if you don't add racing stripes to your jeep, the TBS doesn't work.

Agent_Oragnge

did you just pay $100 for a whistle?

lovemeblue4x4

I bought a throttle body spacer for my tj about 5 years ago. Haven't bought one for my XJ, only air intake

tavish_g

on a vehicle that has fuel injectors after the throttle body and not in the throttle body, the spacer does nothing at all, you'd be better off just dropping screws and stuff down the throttle body, than wasting money on one of these crudely cast chunks of snake oil.

ThunderThighs

Could you imagine if you did both of these? That'd be some sic power.

JeepingDan

Overflating the tires will help to.