Attila
Active member
Has anyone removed the cats from the head pipes on the 2nd. generation FJR and did an A-B dyno test to see what if any horsepower gains were made.
I have an 08 with StainTunes with the DB killers removed and no bags but I need more.
I've heard that you gain about 5 hp when you remove the cats from the head pipes but I've not seen any documentation on this mod.
Web Cams has a mild profile with 241 degrees of duration @ .050 checking lift that they recommend for a street FJR that can be used with stock valve springs but that's only about 10 degrees more than stock and good for maybe 3-5 hp more over the stock cams.
You can't get wild with the camshaft duration in an FJR because of it's tall gearing which is the one thing I dislike most about mine.
Anyway, removing those cats will be a real pain but for 5 hp I would have to go for it.
I've always thought that my black FJR was the most beautiful bike I've ever owned including my black 96 super Max but the FJR simply needs more oats.
Thank's for your help and this is a very informative place to visit even though farkles and doo dads seem to be what is on most folks mind who ride these things (FJR's) however even a slow FJR is cooler that a tad quicker but ugly Kawasaki.
I have an 08 with StainTunes with the DB killers removed and no bags but I need more.
I've heard that you gain about 5 hp when you remove the cats from the head pipes but I've not seen any documentation on this mod.
Web Cams has a mild profile with 241 degrees of duration @ .050 checking lift that they recommend for a street FJR that can be used with stock valve springs but that's only about 10 degrees more than stock and good for maybe 3-5 hp more over the stock cams.
You can't get wild with the camshaft duration in an FJR because of it's tall gearing which is the one thing I dislike most about mine.
Anyway, removing those cats will be a real pain but for 5 hp I would have to go for it.
I've always thought that my black FJR was the most beautiful bike I've ever owned including my black 96 super Max but the FJR simply needs more oats.
Thank's for your help and this is a very informative place to visit even though farkles and doo dads seem to be what is on most folks mind who ride these things (FJR's) however even a slow FJR is cooler that a tad quicker but ugly Kawasaki.
