I have had a 04 Suzuki Gs500f for a year now and I was wonder if the K&N air filter really give you a increase in horsepower and torque?
also I read in one of the post that a guy name rclz, put a dynojet kit and Almost get a increase of 4 HP. with just that dynojet ket, so I was wonder where you can get that dynojet ket from? It's just a jet ket right?
If you do a filter I would reccomend going with a pod, and then using some sort of aftermarket exhaust, in the newer GS's case probabley a slip on of some sort and then figuring out what you need to do to the jets and then purchase some mains, pilots, and needle shims, hopefully someone will post up on what they have in a homemade kit for your bike. I did the above listed mods on my 93 GS and it turned it into a new bike, well worth the investment.
No, Im not looking for a aftermarket exhaust. Im just looking for a small mods like air filter or something. by it self dose the K&N air filter not do anything? what a pod?
Well then no dont buy a pod, it has never been proven to work with a stock exhaust. Filter in the box would have little improvement, maybe one or two horse with the proper jetting.
If you increase airflow at all, you'll have to rejet. Exhaust is a much more effective mod than intake. You don't need to do dynojet; I just put one size up on the mains on my '04 and it ran great (and a decently smooth dyno curve to go with it).
alright,
So what a Filter in the box? and what kind of jetting? So I just need to go up one jet?
Check the Faq forum for some numbers on jetting, Im not sure if its there but its worth a shot.
Not on '04s. I just looked through my notes, and I didn't write down what size I used. I can ask tomorrow. It was one up.
Please look it up for me and get it back to me.
This sounds like what I want to do, K&N pods - Go up a few more sizes, and one more washer on the needle - I ended up at 142.5 before I did the exhaust.
But what is a K&N pods?
Maybe I'm just a cynical little prat, but I don't like K&N filters. They don't FILTER as well as OEM ones. Sure, for the track it's alright, but I like keeping stuff out of my engine.
Roadstergal
Did you just change the main and not the pilot?
There are 3 jets on the 04+ (mid, main, pilot). By going up just one size, you will need to go from
17.5 to 20 on pilot
60 to 62.5 on mid
130 to 132.5 on main
This is with the UNI drop in and wileyco, 2.5 turns out on mine
When I changed to the KN Pod
22 pilot
62.5 mid
137.5 on my main
3.5 turns with this setup on mine.
The 04+ are also already shimmed with one washer under the needle.
There are 3 jets on the 04+ (mid, main, pilot). By going up just one size, you will need to go from
17.5 to 20 on pilot
60 to 62.5 on mid
130 to 132.5 on main
This is with the UNI drop in and wileyco, 2.5 turns out on mine, What exactly is a UNI drop in and a wileyco?
When I changed to the KN Pod
22 pilot
62.5 mid
137.5 on my main
3.5 turns with this setup on mine.
Which one do you think was better horsepower and torque wish?
Maybe I'm missing something here... but why on earth would you want to go up that many sizes on the main jet? Stock is a 127.5 on an '04, so why would you go up 10 sizes on the main? Main jets don't even kick in until upper revs. Is the GS THAT lean? I'm thinking about playing it safe and just getting a DynoJet or FactoryPro kit.
The Lunchbox or pod type K&N fileters installed without changing the exhaust make a significant difference the jetting required and the feel of the bike - I disagree with those who say you cannot get it right without also changing the exhaust - On my 2001, before I changed out the exhaust, I ended up one up on the pilot, one up on the mid main and at 140 on the main. 137.5 seemed a bit stronger in hot weather - but it ran lean towards the end of the riding season here in Wisconsin. I would rather run a bit rich (giving up a bit of power and running a bit cooler) in hot weather than run too lean in the cold.
What if I run a full exhaust with an OEM filter though?
I still don't see how bumping it up to THAT large of a main jet is beneficial...
First off there is aboslutly nothing wront with the K&N filters, thats all anyone runs on sprint cars, well most dirt racing cars for that matter and I have seen our own personal 17k engine torn down and there was absolutly no dirt inside, no scaring of the cylinders at all, so if it works for that application then it sure will work for the GS, or any other street application with flying colors. The key to a K&N is properly maintaining them and coating them with a good coat of oil after you clean them, if you dont do either of that then they dont work but if you follow directions there there isnt a better filter out there.
For an example, on my 93 GS I went from a stock 122.5 main up to a 150 when I did the pod, pipe combo, and the bike ran great, I also adjusted pilots, but my numbers dont apply to the new bikes, its just to show you the jump I made.
Yeah, and that's what I don't understand. A main jet size of 150 is HUGE. No one has been able to tell me why they need a main jet that big.
Quote from: AlphaFire X5Maybe I'm missing something here... but why on earth would you want to go up that many sizes on the main jet? Stock is a 127.5 on an '04, so why would you go up 10 sizes on the main? Main jets don't even kick in until upper revs. Is the GS THAT lean? I'm thinking about playing it safe and just getting a DynoJet or FactoryPro kit.
Stock on 04+ main is 130, according to the supplemental manual, and the one I pulled out of my bike. 10 sizes? 1 size =2.5, so I only went up 3 sizes compared to stock. $80 for a Kit or $30 for DIY and learn something, I'll take the knowledge anyday, and it's really not hard to do.
I liked to first setup better and just recently went back to that setup. Which brings up that I have a K&N Lunchbox for sale. Anybody? Anybody?
Ohhhhhhhhh. 2.5 = one size.... all the same. 150 is absurdly large.
They are different carbs I believe so the numbers may not be doing the same thing in each carb. With my older style carbs and the amount of air and the ease of the flow of that air in and out of the engine more of it was availible for use, therefore you have to richin up to meet the demand of all the extra air so you have a good mix of air particles and fuel
first of all a dynojet kit is a bunch of mikuni jets repackaged, with a whole bunch of worthless extra parts that you are paying for and don't need. the factorypro is the same way only with knockoff jets.
stock the bike is that lean for emmision reasons that going up three or four sizes is nessaccary to get it to run good.
Quote from: AlphaFire X5Ohhhhhhhhh. 2.5 = one size.... all the same. 150 is absurdly large.
150 is just about right for a street bike with pods and exhaust - it is where most of us end up when we do jetting by trial and error - and that has been the number ever since 1989 -
There are those who will swear by one size smaller - and those who are using the dynojet needles will use much smaller jets (the thinner needle in their kit lets more fuel flow through the emulsion tube than the larger stock needle - so smaller jet works)
Still... 150 seems absurd. My father does a DIY jetting on his FZ1 with exhaust and pod, and he's running 2 125s and 2 127s. Maybe because of that it seems crazy...
Hey tdan553527
I am very intrested in your K&N Lunchbox, How much are you be selling it for?
Quote from: AlphaFire X5Still... 150 seems absurd. My father does a DIY jetting on his FZ1 with exhaust and pod, and he's running 2 125s and 2 127s. Maybe because of that it seems crazy...
Different bikes with different carbs.
No, he has a ( F model ) like mine. What jet kit would I use if I get a K&N Lunchbox and not do anything else like exhaust or anything.
What exactly is a K&N Lunchbox or and pod? and what the diffent between a normel K&N and a K&N lunchbox or and pod?
Lunchbox is one that goes inside the airbox, basically a stock replacement, a pod is a round filter the completly replaces the air box, it is basically a box filter that connencts to the carb, alot less restriction.
normal = "drop in" ; replaces the stock filter, you still have the airbox.
"lunchbox" ; one single filter that goes over both carbs.
"pods" two filters one for each carb.
Ahh, ic, well that makes more sense then mine, technically a lunch box is one big pod, but oh well. :dunno:
Alright so Iv'e been looking at the Lunchbox K&N air filter, How much of a gain in horsepower and torque if any? Do you rejet the bike or not?
Im a big fan of the pods two filters style, How hard is it to install the pod air filter on a GS500? I know you've got to get a good amount of horsepower and torque out of the pods right? and I take it your have to rejet the bike after installing the pods?
What is the part number of the K&N pod? What is the part number of the K&N lunchbox?
Which one the best pod or lunchbox do to if your only going to modified the air box?
ok, lunchbox or pods for hp/ torque increases of 5-10 hp you will have to rejet with a exaust. to put a LB/pods on without a exaust yes you will still have to rejet it and it will run really crappy. if you don't want to remove the airbox get the k&n drop in. with a rejet and the drop in you will get a 2-3 hp increase. but the bike will run smooth, and will not be affected by altidude or rain. time it takes to swap filters, about 15 minutes max.
stock replacement "drop in" part number is SU-5589
lunchbox part number is RU- 2970
http://www.knfilters.com/search/appsearch.aspx
K&N does not list the pods as a option.
Quote from: mountindewGSHey tdan553527
I am very intrested in your K&N Lunchbox, How much are you be selling it for?
Sent you a PM
Alright,
Im looking more into the K&N Lunchbox now. Whats the jetting if your going to do the K&N Lunchbox on a 04 GS500F? I was just looking at the D.I.Y for changeing the jet kit and it look like you have to take the air box and the carbs off, that look alittle to much for me so I was wonder could you take it to the dealer and they do it?
they can do anything, they just charge 65 a hour to do it
whare are you at, if your not comfortable doing it there are members all over that are willing to help