WRJJRS@aol.com wrote:

In a message dated 3/12/2007 9:49:47 PM Pacific Standard Time, WRJJRS@aol.com writes:

r Tracy,

 When I was actively tuning race cars we had a truism that I often used, "everything changes everything". This was a drastic oversimplification, but none the less was true. If you have an engine running very well, a seemingly minor change WILL change exhaust note or timber. On the dyno you would find some adjustments did little, others a great deal. The fact is as you get the mixture closer to right I am afraid you will hear the exhaust not come back up in volume.

Bill Jepson

OOPS! I meant you WILL hear the exhaust come back up in volume!

Bill

 

Bill,

   The sentence actually makes perfect sense if you add a single "e":
"... you will hear the exhaust note come back up in volume."

On the other hand, I'm surprised that this is the case.  I would have
thought that the excess noise might be due to a rich mixture still
burning in the exhaust pipe - but I guess that's really more of a
timing issue.

Dale R.
COZY MkIV #1254