Rossier ?

[bigH]

Will it take away any topend ?

[CHEVYZ]

I didn't notice it if it did! You can definately feel it pull, though!

[450rJam]

you compairing it to stock or the hrc ?

shy of an all out drag pipe I dont think the rossier is going to lose anything anywhere to any other pipe
imo

[bigH]

Stock pipe HRC end cap.

[450rJam]

you will gain power throughout the whole rpm range

more gain low to mid but top will be better also.

the throttle response will be real nice and crisp

[ratso]

You will pick up hp through the whole range. My rossier system felt better than my hrc pipe with a hmf sport slip on. I did back to back test runs.

[Big Red Menace]

I dyno'd several pipes back to back to back and the Rossier made a little more peak than the next best pipe. But after the peak to the rev limiter it was far better than anything else. If I remember corectly it was like 4 hp more at the rev limiter. So to answer your question you will definately NOT lose top end. Plus you can bolt on a supertrapp set up to it if you need to add a sparky or quiet it down.