Ground clearance on my SLP Xpipe isn't so good. I've got them tucked up as far as they can go yet if you go over any speed bump, you'll hear them scrape. Never had a set of SLP's that didn't hit the bottom. However, and I'm only speaking for me but there are those on this board that will testify that I'm not lying, I picked up 51 rwhp with my catback and no other mods. Went from 362 baseline to 413. Added the xpipe and K&N and went to 434 rwhp. Pully and tune got me to my current numbers.
If you want to compare the sound, I made a vid of the exhaust changes.
Dyno comparison - YouTube
If you want to compare the sound, I made a vid of the exhaust changes.
Dyno comparison - YouTube
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