So theres no point buying one. And those performance chips do they work?

 

Sure they work, but you need to decide if what is it....11 horsepower I think is worth like 300 plus bucks. It sure as hell ain't for me. Now, ALL the mods together like a CAI, chip and headers, plus some kinda good cat back system and you're likely to see a noticable gain. Again though, the power gain you end up with will likely not be worth all the money you spend. Only you can be the sure judge of that, though.

 

i have the spacer and if anything i noticed a loss in gas mileage but i lov ethe sound maybe when gas goes down ill put it back in

 

Some V6 engines are 60 degrees to cancel out vibrations and allow easy arrangement of 120 degree separated crank journals. 90 degree V6 engines only exist because of the V8 engineering that they were made from. 120 degree V6s would make more sense.

Search wikipedia for "V6 engine", the article there is very accurate.

The reason our V6 does not respond to easy modifications is because they are an old design that has been combed over. There just isn't an easy 50 HP without a big redesign. Since it was never slated as a high HP truck motor, it would likely be best just to start over, but no need to use a 90 degree V. That would just mean we would be getting more leftover engineering.

 

Well - the real reason a TBS won't do any good on the JK, is because its a Sequential Multiport Fuel Injected engine.....and all the TBS is doing is creating turbulance before the intake air is anywhere NEAR where it would have an effect....WAY too early in the process.

I believe the bottom line is that a throttle body spacer can at least theoretically help a carb or throttle body (Glorified carb...) engine, but, I doubt that you will find any measurable difference with a sequential mult-port fuel injected engine (That we have).

- UNLESS you change the throttle area or are correcting for some really bad plenum inlet geometries. (i.e. a 90 deg turn right before the
throttle, size mismatch, etc.)

So, while spacers CAN (sometimes) help with carbs & thottle body engines - they can also hurt or make little difference.

The three main influences are fuel distribution, plenum volume tuning, and intake pulse smoothing.

1. Fuel distribution: The fuel has more time to make the turn to the end cylinders. It also has longer to atomize (which can be more of a problem with throttle body injection since a vacuum signal is not present to help shear the fuel)

2. Volume tuning: depends on engine displacement, cam, manifold, RPM of interest, etc.

3. Intake pulse smoothing: In a worst case scenario a single cylinder demands XX liters only once every two revolutions.

(Can also be demonstrated by a 350 chevy only needing a 650 cfm 4-barrel carb with a standard manifold, but needing at least double that when going with individual velocity stacks)

Smoothing the intake pulses helps to decrease the instantaneous demand on the carb, and can up the HP IF CFM limited and/or by improving fuel metering.

Another benefit can be thermal isolation, depending on the fuel and manifold material.

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But - we have mult-port fuel injection...not a carb or throttle body injection system...so, adding a throttle body SPACER, is pretty much pointless.

You CAN enjoy some extra noise...and therefore sometimes the IMPRESSION of more power, etc...but there's no basis in engineering for ACTUAL GAINS.

So - SURE they work...sometimes, but never for us.

 

THanks for the long explanation. Just one more thing. I fi install it for the sound, will i be hurting the engine or it won't do anything bad?

 

LOL

Save some money and just punch a hole or two in the muffler - its free.

 

Iam getting the gibson dual, but somehow people got bored of the gibson dual thread and don't feel like helping anymore. hehe. I love when the a jeep is loud so if its not bad i will want it. So is it?

 

aboslute complete waste of money. The only way one of these would benefit with proven results on a dyno would be with a bigger throttle body, tuned computer, better flowing heads, cam to match the heads, etc, etc. It's a "hype" sale item and even with "real" engine modifications there is no guarantee a TB spacer will provide any positive results...aka rwhp.

 

And i guess iam not going to do these modifications, ehehe. But it does increase the sound, hehe. Thats worth it, well for me atleast. But does it have bad effects on the engine?