HP loss with Cobras

[Yamaharley Guy]

Anyone know just how much power is lost w/ the cobra exhaust? I bought my bike with them already on so I don't have a 'before' frame of reference. However, on my first trip to the track she did run very consistent in both ET and trap speed - but the trap speed was always a click below 112 mph. The bike runs fine and has no other modifications. Rider weight = 180 lbs sans leathers. Shouldn't I be going thru the traps with another 5 mph or so?

 

[maleko89]

Not too much, 3-5 I'm guessing.

 

[shawn kloker]

Yah,120mph is a good run.

 

[Rusty McNeil]

My traps are usually 117-118 at 11.40-11.55, I wiegh 230lbs.

That was with gutted stock exhaust, I haven't been down the strip yet with the UFO's

Rusty