We resumed engine development on the LT 250 Suzuki after a 25 plus year break.  We gathered up an arm load of pipes to do our initial testing.  In our initial test we tested the Paul turner pipe and silencer, DR Q / Shearer pipe and silencer, Dyno Port, and a few other that we could not identify the manufacturer of the pipes.  We wanted to test a FTZ exhaust system but could not find one for testing.  We would still like to test a FTZ.  Our test mule is a 1987 LT 250.  The engine ports were cleaned up but port timings were not changed.  It had a TM38 Mikuni.  We modified the stock head.  It had Boysen dual stage reed petals on a RM 400 intake manifold. Stock stroke and a 68mm Wiseco piston.



Displayed below is the top 3 pipe contenders tested on the engine specs. listed above.

Blue lines are the Paul Turner
Red is the Dyno Port
Green is the DR Q / Shearer