</font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Originally posted by Rob:
<strong>Maybe the Dynomax/Monza tip users can chime in on this one...

Couple of weeks ago I ordered what I thought was the correct Monza Pacesetter tip from JC Whitney-the one that the Dynomax users were buying. I got model #95-9938 & have not installed it or the muffler yet. Then I read on another board of a couple of people experiencing a loud "swooshing" sound coming from the tip at WOT. Someone said that the correct tip is model # 95-9125 (Big Bore Pencil tip) and it does NOT create that sound on his rig at WOT.

Has anyone here heard that "swooshing" from their Monza tip with a Dynomax muff? What model # are yall using?

Below is the link to the Monza Pacesetter exhaust tip page for reference. Thanks.

Monza Pacesetter Tips</strong></font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">I got the 95-9938 per someone's on-line recommendation and it DEFINITELY makes the swooshing sound. I've heard reports that the 9225 doesn't make the sound. I don't know why one does and the other doesn't unless they're different sizes or the perforations in the bore are different.

If you find out, let us know. I'd strongly consider removing mine and changing to the other one if I knew it would solve the problem.