Hi all, advice required yet again, purchased my DT175 with a "big one" complete exhaust system, performance is quite poor with the power only arriving at 7,000rpm then tailing off at the redline 8,000. I had the original exhaust which is a bit tatty but put that on & it made a big difference, power now comes in around 6,000 & tails off around 7,500. I'm not sure of the carb jet size but when reading about the new exhaust it says jet changes are usually not required. Even with the standard exhaust I'm struggling to get much faster than 55 to 60mph, is this normal or should I check the sprocket sizes ?
One again any information would be appreciated.
Dave