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Message started by russ_g on 05/12/05 at 14:12:24

Title: Best performance muffler
Post by russ_g on 05/12/05 at 14:12:24

Ok i'm not big on sound (although i don't want something that will tick the neighbors so i'd like to avoid too loud) - but a little more power interests me. In conjunction with a "stock" k&n (meaning a straight swap for the factory filter), what would be my best bet. An of course jetting to go along with that

Title: Re: Best performance muffler
Post by bobo383 on 05/12/05 at 15:16:08

Stock Harley Davidson Sportster muffler works great , sounds more rumbly (lower tone), and ain't too loud. Chrome is outstanding. I accessed the factory-sealed mixture screw, halved the white needle spacer thickness, and jetted up to 155 main about the same time, but it's still just a hair lean at wide open throttle. You can see what it looks like in my Tech Section post:
http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1114360126

I got a good power boost from this combination.

I'd like to try a 160 jet, open up the air intake, and I have an aftermarket carb as well (Thanks, Lancer) so who knows where I will wind up with this thing.

Title: Re: Best performance muffler
Post by lancer on 05/12/05 at 15:40:09

The wonder of it all is that there is no end to it. Just let you mind conceive and let your heart guide you and enjoy the ride on this creative road.

Title: Re: Best performance muffler
Post by lancer on 05/12/05 at 15:45:57

Bobo,

By the way, I did not get the carb tuning pages to you when I intended, I am visiting my new grandson for a few days, and will do so when I get home unless I can access my files from here.

Title: Re: Best performance muffler
Post by Ed_L. on 05/12/05 at 16:14:21

That is pretty much the same setup I'm using on my '02 except for the main jet which is a 152.5. To help with the air flow to the carb I went wild with a 1/4" drill on the air box door, must of drilled 60 holes in it till I ran out of beer, oops I mean room. So far I'm very happy with the results of both the beer and the modifications ;D.

Title: Re: Best performance muffler
Post by Nightrain on 05/12/05 at 16:18:11

I'm also running at 152.5 main. Did the airbox mod give you more top end, low end, neither or both?

Gracias! 8)

Title: Re: Best performance muffler
Post by Ed_L. on 05/12/05 at 16:36:55

Drilling out the airbox door seemed to help with the top end a little, maybe and extra 50-100 rpms. I tried it without the door for a month but got a bit nervous that mice would move into the airbox when I was not looking. The only difference between the drilled door and no door was more intake noise without the door, the change in performance felt the same.

Title: Re: Best performance muffler
Post by bobo383 on 05/12/05 at 16:49:22

I yanked the door, and got leaner at the top end so it must have done something to increase the airflow. Tight now if I run wide open for a few miles, the pipe will put out pretty consistent flames when I stop - like at a red light on the access road after going wide open on the highway.

I thought I was too rich at WOT, but removing the airbox lid made it worse so I think I'm still too lean.

Just for grins I removed the stock air filter as well - It got really bad then - backfiring and alot of slow-burning fire from the pipe. Looked like the old cars with the flaming tailpipe mod.

Of course it's at night when I'm doing this - no fun in the daytime. The children in the SUVs that pull up by me really dig it. A few hot moms, too.

May have to put on a small acetylene bottle with a nitrous switch and spark plug so I can do it on demand. The rear brake lever might complain. BUT IT LOOKS SO COOL.

Title: Re: Best performance muffler
Post by Ed_L. on 05/12/05 at 17:03:14

I'm thinking about moving up to a 155 or 157.5 main, still seem to be a little lean at WOT. Don't want to fix it broke so I'm leaving it alone right now.