Working on a friends 2000 ZR 600 EFI, haven't had much experience with the EFI before. Problem with the sled is an intermittent miss/bog around 5-6k rpm. Sled starts fine, idles great, has good response, but has a random miss/bog and occasional backfire out the exhaust when running it. Sled has 8000 miles on it and internals on the engine are healthy. My initial hunch is the TPS is toast, how do I check this? Also wondering if the reeds could cause a sudden miss like described? What do the Cat gurus have to say here?