Just wondering if you get any kind of a power increase.... approximately how much speed?

Slight power increase.  Maybe a couple %.  A couple of % of not much is, well, not much.  What you get from richer jets is better low RPM drive-ability.

Leave it bone stock and go up one size on the pilots and the mains for warm up, ride-ability and throttle response, if you change the pipe for sound, you'll be rejetting anyway. The path for HP is best fallowed by buying a bike with more HP in the first place...dollar for dollar (CCPDYMMV) 

I hate bikes with stock exhausts. HP wasn't my motivation to rejet/slap a new exhaust on my bike.

- Better warm up times because of the better sized jets
- More reliable throttle response
- Bike performs better along it's power curve thanks to better jetting/aftermarket pods
- Bike sounds like a real bike instead of a sewing machine
- Bike seems to handle a little better with the lead lined cast iron exhaust they gave us not being there.
- Engine health is better because it runs cooler with more fuel being dumped into it



If you're looking for pure power, buy a 600/750/literbike. You won't see much more power at all with this bike regardless of how much you put into it.

Quote from: rbbmcghee on November 13, 2011, 01:24:42 PM
Just wondering if you get any kind of a power increase.... approximately how much speed?

almost none. ready to ride faster = a bonus, and the throttle is smoother.

more speed = learn to tuck, you're fighting wind, and wind always wins.

Why more power? Like they say - maybe a few percent after all that work.
If you really want noticeable more power, then time for a bigger bike.
I find the GS just fine and a blast to ride.

Junior has become my favorite. Real sporty and nimble.

Is it worth it, well I let you know hopefully this week when I get my delivery in from Buddha.

The one thing I hate, hate, hate about this bike is the sound "exhaust" so I am replacing it. Since I am replacing it I understand I have to re-jet.

One a side note, smoother power band, quicker respose, better low end power. Yeah that's a bonus

Got around to putting my new jets (20/60/135) in today but I still have a stock exhaust. I didn't mind the sound but I found the engine ran too lean with the stock setup. Rode it for a bit after the upgrade and it as the other posters mention, better low rev response, shorter warmup and in my opinion also a bit nicer sounding, even with stock pipe.
Not any faster though so if that's what you're looking for get a more powerful bike. I want to keep mine though, so this is also a reason to re-jet. A cooler running engine will last longer.

I upgraded the exhaust more for sound than performance, the rejet really helped cold mornings and low end grunt, no other noticeable power change.

Quote from: jmelchio on November 13, 2011, 07:16:35 PM
Got around to putting my new jets (20/60/135) in today but I still have a stock exhaust. I didn't mind the sound but I found the engine ran too lean with the stock setup. Rode it for a bit after the upgrade and it as the other posters mention, better low rev response, shorter warmup and in my opinion also a bit nicer sounding, even with stock pipe.
Not any faster though so if that's what you're looking for get a more powerful bike. I want to keep mine though, so this is also a reason to re-jet. A cooler running engine will last longer.

135 is too much for a stock bike - 132.5 ... of course you may live in a cold humid place ... if you have hot dry summers you might find it is rather soft and wont like to hot re-start etc ...
Cool.
Buddha.

Quote from: The Buddha on November 14, 2011, 12:44:32 PM

Quote from: jmelchio on November 13, 2011, 07:16:35 PM
Got around to putting my new jets (20/60/135) in today but I still have a stock exhaust. I didn't mind the sound but I found the engine ran too lean with the stock setup. Rode it for a bit after the upgrade and it as the other posters mention, better low rev response, shorter warmup and in my opinion also a bit nicer sounding, even with stock pipe.
Not any faster though so if that's what you're looking for get a more powerful bike. I want to keep mine though, so this is also a reason to re-jet. A cooler running engine will last longer.

135 is too much for a stock bike - 132.5 ... of course you may live in a cold humid place ... if you have hot dry summers you might find it is rather soft and wont like to hot re-start etc ...
Cool.
Buddha.

I simply followed the numbers on the wiki and so far I'm happy with it. It's currently cool and wet so that may help. In the summer it's hot but usually still quite humid. We'll see how it works out over time, if I get some trouble in the summer I can always put a smaller main jet in.

Quote from: omio on November 14, 2011, 11:57:23 AM
I upgraded the exhaust more for sound than performance, the rejet really helped cold mornings and low end grunt, no other noticeable power change.

^^
My V&H was money well spent just for the sound and look.  After the rejet, the bike takes 1 minute to warm up and then I'm good to go.  Stock jetting was a nightmare to get warm. 

it's not worth it for more power cause you're not going to get any hahaha...but seriously, you'll only have marginal absolute gains.

it is however worth it for other reasons. a different look, sound, feel (engine response), or one of the biggest factors for me, cause i love to wrench.

Read this http://gstwins.com/gsboard/index.php?topic=58342.0

But to me it's all about the sound.