First off, Hi everyone ! Just joined the forums, been reading through them for a while now. What im interested in is getting more bang out of my bike. I just bought a 2006 GS500F and im already craving more power lol. I love riding the bike, it is very comfortable and maneuvers very eaisly. It seems like I couldnt have gotten a better bike to learn on.

After reading through the forums and exploring other sources I have discovered that performance parts for these bikes are not widely available/easily found. These are the mods I have found that are relatively easy to purchase and install : Ignition advancer, K&N air filter, Stage 1 jet kit, aftermarket can. If I did all 4 of these upgrades how much horsepower could i possibly gain? Also, are there other mods available that I have overlooked ?

exhaust + slipon can + rejet will net you roughly 40-42rwhp (varies by dyno).. That's about a 12% increase over stock (36-37rwhp). If you get a true full exhaust like a jardine or V&H, you will see more power, but I don't know how much more... do a search for slipon or flange or wileyco to find all the info you need there.

Do a search for "rejet '01+ or just look in the FAQ section, and buy your jets from a dealer/supplier individually instead of wasting money on a dynojet kit ($20-$30 from a dealer vs. $80-$90 from dynojet)

Also, is it a brand new '06? Cuz if it is, and you're following manufacturer's break-in suggestions (I.e., nothing over 5K yet) then hold off on mods for awhile, because once you open it up past 5K, you hit the powerband, and it's a whole different bike.

If you just want more oomph off the line, search 15t sprocket or 14t sprocket (I wouldn't recommend the 14 for a beginner, it makes the bike a wheelie machine)

Welcome to the forum!

Quote from: NiceGuysFinishLast on March 04, 2007, 07:56:30 PM
exhaust + slipon can + rejet will net you roughly 40-42rwhp (varies by dyno).. That's about a 12% increase over stock (36-37rwhp). If you get a true full exhaust like a jardine or V&H, you will see more power, but I don't know how much more... do a search for slipon or flange or wileyco to find all the info you need there.

Do a search for "rejet '01+ or just look in the FAQ section, and buy your jets from a dealer/supplier individually instead of wasting money on a dynojet kit ($20-$30 from a dealer vs. $80-$90 from dynojet)

Also, is it a brand new '06? Cuz if it is, and you're following manufacturer's break-in suggestions (I.e., nothing over 5K yet) then hold off on mods for awhile, because once you open it up past 5K, you hit the powerband, and it's a whole different bike.

If you just want more oomph off the line, search 15t sprocket or 14t sprocket (I wouldn't recommend the 14 for a beginner, it makes the bike a wheelie machine)

Welcome to the forum!

how many teeth are on the stock sprocket and what is the size of the stock jets?

16/39 is stock (16 front, 39 rear) going down in the front is the same as going up in the rear.

No idea on stock jet sizes, cuz I don't mess with carbs beyond cleaning (yet... I'm waiting till I can afford the rejet)

Quote from: T-Bone on March 04, 2007, 08:29:13 PM
how many teeth are on the stock sprocket and what is the size of the stock jets?

17.5 pilot
60 mid main
130 main

Speaking of bang for buck, I was cruising today, looked down at the speedo, and I was going alot faster than normal at WOT.  I figured there must have been a slight change in atm, but when I stopped for fuel, I detected the smell of petrol before I opened the tank.  It was coming from the pipe.  Took the bike home and ripped the floats off, and found one of my midmains resting in the bottom of the bowl.  I was wondering why it ran so poor/good this afternoon.  I must admit, it was fun while it lasted.

wtf... it came out? Crazy..

The bike has 6400 miles on it now, I've only put 500 on it since the purchase. After reading the thread about the 14T front sprocket I am very anxious to do it. I may go ahead and order a 15T as well just to see which i prefer. I havent seen a full V&H system for it anywhere, only the Jardine. (which I am considering)  Anyways, after a full exhaust upgrade, a rejet, a drop in K&N non restricted filter and a smaller front sprocket what would be the next performance mod ? Is that pretty much all I can do without head work/bore over etc?

Yeah, after all that, you're looking at serious engine work, cams, overboring, etc... The jardine is your best bet for an F model. Also, after only 500 miles, I would recommend that you take things slowly. I.e., do the can/jets/filter first, ride it like that for awhile, then switch to the 15t sprocket,  the eventually to the 14t... going straight to the 14t is a big jump... just my $.02 though.

Don't bother with the drop in filter. Just go with the lunchbox.

i wouldn't do a 14t sprocket change just yet.



there is a huge change in power placement (not making more power FYI)

i would wait till you get maybe 1500 under you belt, but if you need to change them sprockets then go 15 front 40 rear and should be fine but just remember it going o feel much more torquey

Or you can go totally ape-shaZam! with some wild head milling and such...

Of course I'm a whack job though.

You can spend alot of money trying to make a GS500 faster and you'll only gain a small amount of bang for your buck.

Want a faster point to point bike, buy a faster bike!

Instead why not try to learn how to ride quick... and practice practice on your GS!!!

You will get a different figure from each dyno you test on, but the GS500 averages more like 40 rear wheel hp if you look at all the published tests in the moto mags over the years.

Doing the exhaust, jetting, and air filter thing will give you about 42-43 hp extending to a higher rpm than the stock bike, the dyno run from Annie's GS is a good example of this.  John and Annie started this forum.

V&H worked a GS500 over shortly after they came out with the standard mods plus a Wiseco big bore kit and only got the bike up to the Ninja 500 level.     Easier to just buy the EX/Ninja 500 to start with or just learn how to ride the GS500 and go with it as is, my approach.   

Published GS500 tests with EX500 data included from comparos:

http://img.photobucket.com/albums/v443/jcp8832/GS500tests.jpg

Annie's dyno run:

http://www.gstwin.com/dyno_run.htm

I found it, a dyno run on a friends 02 GS500 that I was looking for while posting above.  He uses it for a winter bike having several other fine machines to run in the summer.  He had it rejetted for better winter flexibilty but it is otherwise stock.  The shape of the curves are like the stock GS's so it's a good comparo with Annie's modified GS dyno curves. 

Biggest difference is at the top end where the modified GS continues on past 10k rpm with over 40 hp approx while the stock GS takes a dive after it's approx 8500 rpm peak.

I find I can run my quickest pace on the stock GS's by keeping the bike between 7-9k rpm, no advantage to running it up higher, shifting just past the hp peak and dropping to the top of the torque curve.  Considering the GS's inclination to push oil at higher rpm after the milage on the bike picks up, this is a defnite advantage running all day at these engine speeds when playing in the mtns, etc.

http://img.photobucket.com/albums/v443/jcp8832/MikesGS500dynoRuns.jpg

I put a 15T sprocket on the 97 GS, but have seen no need for it on the 02 with it's more flexible engine, the 3 circuit carbs in place of the old 2 circuit ones and the modified cams.  If your gonna join the stop light GP with your GS or take it to the drag strip , I can see your desire for more power; but for all day fun riding with friends in the twisties and with at least a little consideration for lurking LEO's, you can't beat the stock 01 and later GS's in my opinion.

Quote from: CirclesCenter on March 05, 2007, 12:14:53 AM
Or you can go totally ape-shaZam! with some wild head milling and such...

Of course I'm a whack job though.

lmao!

Welcome!

I think everybody goes through this a month or two after getting the GS.

those mods above will give you a little bit more bang & are fun to do over time, but right now you should really find a nice twisty road & focus on leaning the bike over. It'll blow your mind & you'll forget about a tad-more horsepower. 

wilgarn,

Just bought an 06 gs500f in August, and I love the thing, dont get me wrong. But I too feel the urge to increase the power and whatnot w/out buying a new bike (considering the fact that Ive got this one for a few more years because of the loan). Let me know what youve done so far, and how everything works. thanks

More power eh ?

Pull on the shiney metal thingy on the extreme left hand side of  the machine's mustache.

Then twist the machine's mustache on the extreme right hand side. Really good now, twist it like a lemon!

Now let go of that shiney metal thingy, but be prepared
IT GETS ANGRY WHEN YOU DO THIS!

a little rejet from the stock leanness will show much improvement.

I honestly think a suspension & rubber overhaul is much more rewarding on the GS than some slight power gains.

Quote from: ohgood on March 07, 2007, 07:33:01 PM
More power eh ?

Pull on the shiney metal thingy on the extreme left hand side of  the machine's mustache.

Then twist the machine's mustache on the extreme right hand side. Really good now, twist it like a lemon!

Now let go of that shiney metal thingy, but be prepared
IT GETS ANGRY WHEN YOU DO THIS!

Can I nominate this for post of the week/month/year?