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2004 trx450r high comp piston, stage 2 cam, 44 fcr , dasa adapter, cut air box, sparks drag pipe
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What should the jetting be with a 2004 trx450r with a 44mm fcr and a pipe. The pipe is Curtis sparks megaphone pipe. It makes the best top end out of any inframe. ( 2hp over dasa shorty) what are people usually running for jets. I ran it on my built motor with a 187 main and 48 pilot but I put it on a stock motor on pump gas. The bike is backfiring during acceleration. My guess is too rich
 
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