Hi all,

I recently purchased an SL 55 intake setup, complete with K&N's, airboxes, y pipe, and tubing. I decided to go this route because a) I read a few posts mentioning that performance was similar to the single CAI and b) I want to minimize the supercharger whine the best I can.

I noticed many of the SL 55 intake owners are running with TVT tubes and NW devils horns. The tubes apparently to help the air flow better and the horns to collect more of the air coming in the front of the car, potentially "forcing" it in at higher speeds.

I have gotten a few opinions from some running the setup. Everyone recommends them, but nobody really has any detailed information as to if these things really do help. I have priced the tubes and horns to be a whopping $300 extra on top of the $400 I paid for the intake setup. This makes it pretty close the price of a NW dual (which I'm hesitant to get because of the terrible supercharger whine).

So, question 1: theoretically, I'm sure this setup *probably* helps for the reasons I listed above. But for the experts out there, are we talking about a minuscule gain, or something closer to the performance of the dual CAI? And question 2: will the supercharger whine be more pronounced with this straighter aluminum tubing and horns?

I realize people wouldn't have had something like this dyno'ed (and wouldn't tell the whole story either), I'm just trying to get a feel for it. If I'm only going to gain 2 rwhp from $300 worth of "mods", then it isn't worth it.

Thanks for any and all feedback.