Not sure this ? goes hear.
But everything the same on a fat cat. Going from spiral to louvered baffle to help noise any reason for a complete retune?
86
interesting to see where this goes
I have a big bore baffle in my Fatcat (dyna pipe) and enquired from D&D about a spiral baffle for the muffler
I was told they are only available for touring pipes which is what you are talking about I guess ?
The spiral are supposed to be more efficient than the other baffles so I would guess a retune would be required.
I guess I miss represented the post.
Perfferated to louvered baffle.
86
OK
I was told the louvered baffle is better for bottom end
may not be a lot of difference between tunes but they would be different
If you can get a good tune from a Pro who can dial it in pretty quick, I would go for it
Quote from: 98fxstc on August 15, 2019, 12:03:00 AM
OK
I was told the louvered baffle is better for bottom end
may not be a lot of difference between tunes but they would be different
If you can get a good tune from a Pro who can dial it in pretty quick, I would go for it
Was tuned a week ago w/TTS but it's L. A. F w/perferated baffle so he ordered a louvered & stuck it in. Much more neihber friendly. Seat of the pants Dyno it runs the same other than a little less deccel pop which wasn't at all bad before. I contribute that to the louvered baffle.
86
Depends. Are you a "close enough" or a "it has to be perfect" guy.
I think I would pay to have him do a couple Dyno runs with it to see where it's at. You paid him to tune your bike so it runs it's best, why give some of that up?
86fxwg
He should have thought more about the louvered baffle and put it in before he got the tune
I guess he knows that now
He has the TTS and could road tune it himself but TTS is a steep learning curve for beginners
simple answer - go to the dyno guy for peace of mind
he spent the dollars for a quieter pipe, he should spend a few more dollars for a re-tune
Yes it needs a tune, period. Even a very small change in exhaust will create a difference in VE throughout the operating range. And I don't consider what you are proposing a small change by any means.
It would be interesting to see the original tune graph, the untuned graph with the new baffles, and the final tune with new baffles. Especially in regards to the afr.