Found this for the GXP guys, Redline is similar,
It’s a 3 in high flow cat, haven’t seen one for the Redline yet but I might not have looked hard enough.
http://img201.imageshack.us/my.php?image=solo1hf0.jpg
Here are some dyno results on a GXP NOT REDLINE, but I would expect them to be close.
..............HP at the flywheel..........Torque..........Hp at rear wheel
Stock GXP........260........................235......... .........216............
kit ............279........................242..... .............232............
stock cat
Race version.....287........................245........ ..........239............
stock cat
Kit and ......294........................243........... .......244............
3" cat
Looks like an extra 12 wheel hp for changing cats, IF exhaust mods could be added (not true) then I would expect that the same 12 wheel horsepower added to the street catback could be added to the race cat back and would give 251 wheel and flywheel of 302 if the calculations going from wheel hp to flywheel hp were done correctly.
non-race kit, and 3” cat on a GXP
http://img157.imageshack.us/my.php?i...xpdyno14az.jpg
This is all from
http://www.solsticeforum.com