airbox mod, now engine is louder...why?
Posted: Sun May 14, 2000 6:41 am
Well I removed the airbox from my KLR 250 and drilled some extra holes
near the intake periscope. The air intake area is now about x3. I
cleaned the box and replaced it. Now when the engine is seriously
pulling, revs high or low the engine is noticably louder, more of a
hollow and loud sounding engine noise. Why is this? Something to do
with the petrol/air ratio? Would it be lower with air finding its way
into the carb easier now? I know I'm a bit alone on this as this mod is
on a 250...but in principle you 650 guys should have a few answers.
Would altering the carb for a slightly richer mixture reset matters and
provide some more power....perhaps?
Cheers,
Chris.