Hello all, Wanted to see if anyone has tried a 45/54 half system on their 998? I have a 45/50 half system and am adding the 998R cams + 998R ECU and the 45/54 half system vs. the 45/50 ECU and 45/50 half system/998R cams.
I'd spend the money on 50mm headers. You're not going to push enough gas to really need the 54mm bore. The headers are going to start beginning to be the restrictive part of the system. Also, check the valve to piston clearance with the new cams. Could be getting a little close.
I have the 998R cams in the garage and wanted to see if anyone had done the 45/54mm pipe on the 998?
Short of someone having done that I guess the answer can be obtained via a Dyno test with each pipe. I had a 45/50 half system on the bike when I bought it and got a smoking deal from Martin Brickwoods shop in Canada for the Sil Moto 45/54 half system - so it won't be that expensive to test.