this is my first bike and i am not to sure what my problem is. i got it a couple of weeks ago.
this site has been very informative but i have not heard of any thing similar.
it takes a little while for my bike to warm up(3-4min). and it is like i loose power around 5000 rpms but after 5k it is great. the longer i ride the less it can be noticed. after riding for about 20 minutes it can hardly be noticed.
my best guess is that i am not getting enough fuel. it also has a custom muffler on it and does not seem to have much back pressure. it looks like i have the stock air box.
i will post a picture tomorrow to show the muffler. please any ideas would be helpful
also this only happens when it is under load if i rev it is fine.
thanks
p.s. in a couple months i am planning a Vance & Hines super sport full system, Dynojet jet kit and K&N lunch air filter.
I7
Quote from: Wrecent_Wryder on May 14, 2007, 03:45:54 AM
I'd bet it has the stock jetting, and with the exhaust mod you're running lean enough to get a "flat spot" there. What year is it?
You'll have to rejet for the V&H and/or lunchbox anyway. Most here would advise against the DynoJet kit, I know I would. Just buy jets.
+1
That is what I would guess as well, esp with the aftermarket can. Check to jets, if stock rejet, and get a drop in K & N filter, that should straighten things out.
I usually let my bike warm up for 5-10 mins, it seems to ride much smoother when it's warm.
my bike takes a good 5 minutes sitting to warm up if the temp is less than 65 degrees. then another 5 or 10 riding before its smooth.
I bet the fuel system upgrade and dyno jet mod will fix your issue
I re jetted without dyno and have been happy. if you're looking for votes I say just buy the jets.
i rode it over to a mechanic friend of mine and he agreed that is a jet issue.
thanks for the info within 2 months i will have new exhaust, k&n, and a jet kit.
after that i will post some video on youtube and let ever one hear what it sounds like.
for those people who are interesed in do ing the same mods.
Don't bother with a jet "kit" if you search this site and/or go to the wikipedia for the GS there is a chart telling you about what size jets and shims you'll need for your intake/exhaust setup. It'll save you some money and work just as well. doing the air filter/exhaust/jetting all at once is great and you'll love how the bike responds better.