Does anyone have an opinion on the best throttle body spacer and air intake to tweak my 2008 Wrangler Unlimited?  I had looked at airaid and Trueflow XDI. The airaid people said it would improve horsepower but not mileage and the trueflow people said it would do both.  My jeep dealer said to start with the throttle body as if I start gunning it more after the increase in air flow I would lose any gains.   I probably would gun it more but would like the 10 to 18 increase in horsepower.  Has anyone used these products or any similar and have any input?  thanks  

the spacer is a waste of money for non carbed engines the intake will give you maybe 10 hp(at high rpm) nothing is gonna give you 25 hp for the cost of an intake system.  

I wonder how all these companies can get away with promoting the big gains without proof to back it up.  It still seems like improving the cold air intake would be a good idea since the stock seems so restrictive.  Does anyone rec. one brand over another?  

I have a 91 YJ 2.5L and I recently have put on a BOMZ Intake (purchased from ebay for only like $40, plus shipping) and It sounded great on there, I havn't drove it since though, but it sounds good, as well I put a Poweraid throttle body spacer, I think it probably is one of the best spacer's to get, I know Rusty's Offroad has a spacer thats pretty close to it as well. Hope that helps, I heard the AEM Brute Force was pretty good, plus in the april issue of JP they have a review of like 10. With HP gains, and Torque gains.  

spacers are a myth unless on a carbed vehicle, and even then you are only building power at really high rpms, at those high rpms you will only be making minimal amounts of power.  

one company that does this huge gain scheme is the tornado thing that you put into your intake tube.  that is the biggest bs thing ever. i will garuntee no matter what kind of vehicle you have, on a dyno the tornado will yield no gains, it is almost a garuntee it will yield loss of power and fuel economy because it blocks the smooth flow of air into the intake manifold. you want your air intake yo be smooth with no blockage of air. as many cfms of air you can get ( and still have good velocity). drag racers would laugh in your face if you asked them if they would ever use one, knowing that air speed and flow is essential for power.

these companies can do it becuase no one can do anything to them for saying that they made so much of a gain, they cannot prove that the vehicle the company tested made that much or lost that much.  

air intakes are an okay idea but do not do everything they say they do, because vehicles are computerized the engine is set to have that much resriction on it if you put a free flow intake on it you have to re map it to get the highest yield from it. intakes exhausts etc dont make power they release it. and they dont do what they can unless programmed to that specific set up. the best chip that can help with performance mods is probably unichip  

Thanks for feedback.  I haven't checked here in a while.  How does the unichip work and what do those cost?  Is it something that needs all the fancy diangostic computers at the dealer or is it just "pop it in".  I am showing my ignorance for sure, but just curious.  

I have an AEM Brute Force intake on my jeep and I have seen significant gains.  I am very pleased with it and will use them from now on.  I used the K&N in the past but will not go back to them now.  The AEM is a dry flow filter meaning it never has to be oiled and cleaning it is simple.  The filter is also very durable.  I put mine on in no time with the simple instructions.  

I have a 2006 TJ and I installed the Banks Cold Air Intake system in it. I highly rec. that you get this one. I have noticed a big increase in power. I have had no problems with it and have noticed about a 2 mpg increase if I drive it like I should and not try to hotrod it.  

i had a cold air on my 00 tj and it noticed big gains if your gunning it and such but the gas milage is the same. for a jeep it isnt a good mod becuase you need low end power for most things other than mud bogging and when your doing that you dont want an open filter. ive heard uni is a good thing but i dont know personally. they advertise 25 hp 25 torque.  

the intake tube is the key thing to the cold air and high flow systems.
I'm not gonna comment on the tornado cause I've seen dyno results there...........the intakes can both help and hurt mileage depending on driving habits. I haven't ever run a UNI filter on anything other than the quads and mx bikes, when we ride in the sand I use K&N filters. I've had sand get sucked through the uni's, o yeah the K&N too but not multiple times ...  

when i say uni, im talking uni-CHIP. ya i think unifilter are only for powersports. but the tornado cannot make power nor give better fuel milage. it creates turbulence something that you do not want you want smooth airflow. think of it as a bath tub. the water runs out and spins on its way out causing it to stay in the tub longer. if it were didnt have turbulence and had a smooth flow it would drain out faster. same thing as air. unless i see the people dyno it in person and have the car running the same temps when it was dynoed before and after, with the oustide air temp the same i will never believe it. it also blocks flow by having those fins in the tube. people have smooth intake tubes, and smooth curves in the tube, ported heads and throtle bodies you want smooth flow. i would love to ask gale banks what he thinks of it.