Exhaust Tunning

[mtdsseven]

My ninja has a stage 1 Factory jet kit, stock air box, modified air filter and I have a Two Bros carbon fiber muffler which I custom welded it in the high mount style. I basically cut of my stock muffler and welded on a 45 degree stainless pipe. the diameter is just slightly larger than stock and "slips" over the stock pipe. Some of you may already know that inside the stock pipe towards the muffler is yet a slightly smaller diameter pipe inside as well. Will this custom setup hinder or help performance, gas mileage, response, etc. or maybe not affect anything at all? Also, any opinions on the look? What do you think? Thanks.

[Shifty1]

I'm no expert but I would bet the difference is negligible.

[e1_ZX-9r]

It's the way it should be -- the muffler inner diameter is larger than the mid-pipe diameter, slipping over the mid-pipe. Looks nice too. Enjoy it. Your work looks good.

I've found the best throttle response on my 9R after a carb sync was performed. And in the nine months since my first one, I've probably sync'ed them another six times. It just makes the whole riding experience feel like a brand new bike.

[mtdsseven]

I appreciate the response. My curiosity is settled.

[suprajztwenty]

id say do the same thing with a muzzy header and you should feel a little more grunt. plus the weight savings is a bonus

[motocon]

What kind of tail section is on your bike?????

[mtdsseven]

The rear end is an R6 with custom welded sub-frame. Its the tail, under tail, tire hugger, tail lights, and rear seat. Its painted to match dark purple mica.

[mtdsseven]

With an aftermarket header, will I need to re-jet?

[e1_ZX-9r]

I doubt it.

[motocon]

The tail looks good! It really changes the look of the bike.....

[mtdsseven]

Thanks. It also shed a lot of weight with the new rear end. I can definitely tell a difference especially in the corners. I thought about customizing the front end with an 05 zx rr.

[davewaibel]

you will have to rejet, as the jetting on our bikes are crap to begin with-

[mtdsseven]

Really? A stage 1 jet kit wont handle headers and muffler? Im not a hard core rider, but rather I like a smooth power band and response that doesn't suck in gas mileage. If I need to re-jet then I'd probably forget about aftermarket headers.

[davewaibel]

I wouldn't sweat the 2hp difference that much, our bikes do not have any 'hidden' hp like comparable gsxrs' do- you can spend thousands on exhaust, and cam timing and other trinckets- not much to be found-

[RodanZx7]

looks really good. like the angle. the only thing i dont like is the color of the muffler... >.>

[golden city ninja]

not to sound rude but i dont like the look of it pointin that high. doesnt quite fallow the natural curves of the bike.

[mtdsseven]

That's cool if you don't like the high mount. I like it because it gives the rear end that aggressive "racing" look. When spring hits, I'm actually gonna try to hide a custom muffler inside the bottom fairing and have nothing but a short tail pipe sticking out.

[davewaibel]

Have you had the bike long enough to get that burning sensation around your ankle- they all do it- I would think that you would melt your lower in about 10 minutes if you try to hide a cannister in/down there- especially if your jetting is off a bit, lots of unspent fuel tends to burn pretty hot right around that area- just a heads up

[mtdsseven]

Yes I have experienced that and as a result I'm planning on lots of heat shield and exhaust wraps. I'll see how it goes. Trial and error.

[SpraynPray]

i was actually thinking of the same mod however the only hard part is going to be clearance from top of rear tire to bottom of piping. still working on it though
originally i thought of converting the rear tail to a 06-07 zx10 and using that exhaust,due to it being undertail and dual outlet (yes it would work) doing so would help at lower rpms, plus i think it would look amazing