Anyone know if stub stacks (AKA velocity stacks) are worth the extra money when using aftermarket filters such as K&N? I think they're around $30 each. Supposedly they make the air flow into the carb smoother and more uniform, but I'm wondering if they're really worth the money. Thanks -

michael

All the info I have heard is that they are "worth it" on SU carbs, no matter what air filter is being used. That's why the stock Z has them built into the OEM filter housing. At one time the Z Therapy website had a write up on this subject. I don't know if it's still there.

I concure with Carl. The only bummer is that you hide those beautiful aluminum velocity stacks under the K&N filters. These stacks do smooth out and increase the velocity of the air coming into the carbs. Also, changing the length of the stacks will move your performance power band a little......longer stacks, better low end....shorter stacks, better high end.

Yes, velocity stacks are functional they aren't there just for looks. If you don't want to spend the money just cutout the stock ones from the original backing plate.

very functional..... i have that exact same setup in mine..... excellent performance...

Thanks for all the advice guys. I'll go for the stacks.

Michael

the set-up is a "sound" investment...