I have spent some time looking thru old posts for advice on exhaust systems & cannot find the answers I looking for!

I recently lasted one day trying a two brothers m7 slip-on can & yes my bike felt a little more torquey/powerful but the sound level was obnoxiously LOUD, even with a P1x sound suppressor fitted!!! Off it came & given back.....I could not inflict that noise on my neighbors or anyone else for that matter!

What options have I got for a lighter than stock exhaust that looks good & delivers a little more power with JUST A LITTLE MORE BASE/GRUNT/NOISE etc THAN STANDARD????

Any first hand info on noise vs power levels of the akrapovic, FMF q4, Delta, R9 titanium, striker, yoshimura. Any advice would be very welcome.

 

FMF Q4 & power bomb. Not as quiet as stock but pert quiet. The bike seemed to perk up a bit after it had 1500 miles on it.

BB carb and 351 kit [put on at 4300 miles] helped more.

 

I hear that the Leo Vince exhaust is pretty quiet as well.

 

The FMF Q4 & power bomb sounds like a good option turnsleft. I'm not wanting stock quiet as my D-tracker sounds like a sewing machine at the moment. Like I said, just somewhere between stock & two brothes in noise levels.

 

I will try & find a youtube video with a Leo Vince on a D-tracker & hear what it sounds like.
cheers wildcard.

 

I have been thinking on the same lines as Q4 with power bomb or mega bomb. As you suggested it's the only exhaust a little louder than stock that delivers a power increase with decent looks & good build quality. The only other option I can see is the delta barrel4 exhaust but has no power advantage unless the torque header is used & that comes in at roughly the same price as q4 with MB........I'm still open to comments/advice

Anyone else using a Q4 with PB or MB?? I would like to know how what sort of noise we are talking. If stock noise levels is 0 & two brothers is 10, I would like something around the 3 or 4 mark but I could live with 5 ! (half way between the two would be acceptable). Videos on youtube are quite hard to tell whats really happening with sound levels but have given me a rough idea.

.......I'm still open to comments/advice

 

Bill Blue also sells a complete custom exhaust that is a bit loud, but not as bad as the Two Brothers or muzzy. $550.00 complete custom exhaust.

 

Ok, for those that still give a sh#t coz i'm loosing the will to live trying to find the best exhaust combo for me, is a fmf q4 with megabomb.......BUT a kind gentleman pointed out that 70% of my riding is pottering about in Thailand with shorts on & the MB can be very easy to burn a leg!! He suggested a simple pro carbon heat shield for the bomb that would stop this happening. Has anyone on here had this problem? Or maybe a powerbomb would be the answer. This would be a shame as if i'm gonna shell out for a bomb it might as well be a big bomb!

 

Goodies turned up the other day from the US via ebay. A fmf q4 & megabomb with a pro carbon heat shield. (no import duty to pay at post office!! rolled the dice & won this time). Great sound, nice & deep etc. On the scale I mentioned earlier in this thread at low/mid rpm's the noise is about a 3 out of 10 & at full rpm's about a 5 out of 10 compared to the super bloody loud two brothers m7 I got rid of after one day!! TBR is a 10 on the loudness scale!!!

Noticeably better low/mid range torque & of course better top end performance......very happy with results. (compared to oem stock exhaust)

The heat shield on the megabomb is in the perfect position & I tried my hardest to touch it with my bare leg (wearing shorts). Purposely had to touch my leg on it in the end after a 100k ride, just to be sure it would be ok & not hot enough to do any damage & it looks pretty good as well. And to be honest not as obtrusive as I thought it would be.

Only problems:

1. had Kawasaki weld an O2 sensor onto exhaust for 700thb ($20).....took one hour (EFI model)......easy

2. had to play with the mounts on the Q4 & fabricate the mounts a little as to lower the silencer about 8mm to stop the airbox melting......30 minutes of mucking around......easy but annoying thing to have to do from a big name company like fmf!!

Thx guys for all for your comments

 

Hi;
I have purchased a FMF Q4 slip on muffler and fitting a receptacle to install the O2 sensor but the bike does no idle well and once i start to increase the throttle it stalls. Sometimes when the throttle is let off the bike backfires. Anyone that has fitted this pipe do you have to re-map the bike to make it run richer?
Help with these problems,