Just in stalled my z-tube and k&n air filter... what a waste of money i cant hear ANY difference in sound and no gains in power on acceleration...why does everybody hype this junk up...

 

The z tube was always for sound since it doesn't have the resonators that the G tube does. You should hear a difference in sound, I really can't understand why you don't get a difference in sound.

As far as performance gains, the z tube would never have given any performance gains that you could "feel" since you would only have seen a couple of hp increase.

 

I challenge you to go to the POLLS forum and start a poll asking if those who have installed a z-tube heard a noticible sound change when they installed it. I double dog dare you!

 

there is a slight difference, maybe you just cant notice it.

it wasnt a waste of money, trust me... makes your car breathe just a lil bit better

 

just wondering, but does the Z tube give the same "whistle" sound that CAIs give?

 

of course not... ur just changing the tubing to a less restrictive one...

the cai on the other hand has a exposed filter so the louder, and gives that whistle =)

 

This engine appears to be very well developed. You will not notice much difference in power or torque with a single performance upgrade. However, as you add other upgrades you will notice a difference.

IMHO the Z tube provides a cleaner airflow, and a K&N filter provides freer breathing and a small increase in air volume to the plenum. Thus, theoretically, in a strictly controlled dynamometer you will see a small increase in horsepower.

When you later add a plenum spacer, headers, free-flow cats and exhaust, pullies, etc you will know.

 

I love my Z tube. The sound is definately different. I've also noticed that my mpg went up a little too (i can control myself from going WOT too much) Best i've been able to get before the Z tube was 305 when the light came on, first tank with the tube I made it to 340. We'll see how consistant this is tho, but if it's true just a couple of tanks of gas and the thing paid for itself.

 

Hey Diego is the 340 just city driving?

 

If sound is what you want, add a Stillen intake or JWT pop-charger to it. Trust me, you WILL hear a difference. Performance gains are minimal though and in the higher RPMs.

 

You have to really get on it to hear a sound increase. Even if you take it slowly up to redline , you wont hear anything. Just mash the gas one time, then you'll hear it roar.

 

punch it & @ 4K she screams to 6.5K with z tube & popcharger

 

Damn dude, what are you expecting for a little over $100?

 

If you don't drive it hard, you won't hear a difference. You might feel better throttle response more than an increase in power. If you don't think it's worth the money, sell it to someone on this web site. I'm sure someone will take it off your hands.

 

i LOVE my z-tube... punch it at 4k rpms as someone else said