Kawasaki KLX300 SM Exhaust and fuel controller testing EHS Racing Barkers tuning on Dyno

Showing a KLX 300SM during the fuel controller testing process and exhaust development for the package that EHS Racing and Barkers Exhaust will be selling. Tuning on our Dynojet 250I. Comparisons vs stock exhaust and multiple airbox lid setups

[Myrussell]

I had a 2022 klx300ds and put on a delkavic slip on, Kdx snorkel and PCFC and it made good power. Sold that bike to my brother. I bought a 2023 klx300ds and went with this set up EHS tuner, barker exhaust and lidless air box. The 2023 pulls harder and is noticeably faster. Thanks for all the hard work guys.

[zrtrackerjoe]

I've been waiting on someone to make a video like this. Last year at a dual sport ride I got a chance to swap bikes with somebody that had a bone stock KLX300 compared to mine with an EJK exhaust and the typical KDX air box mod. I was blown away at the difference and so was the other guy. I always see people on Facebook pages saying the tuner doesn't add that much power, but I can definitely say after watching this it most certainly can back it up. This video is really makes me want to remove that secondary throttle plate.

[stevenbusk]

A fantastic and very well explained informative video on tuning the KLX300. Nice to see the solid performance gains from breathing and tuning optimization! I have 2 questions for you.
1, Would you be able to do a dyno test and tune with a set of aftermarket cams just to see if there are any gains available?
2, Do you have the ability to change the ignition mapping with your tuner, and if so do you expect that there could be further gains to be seen, especially with 93/98 MON/RON fuel?
I don't expect many people to get into head porting or big bore kits, but a cam change and premium fuel are things that people may do to get the best power out of the 300 without internal engine work.

[stug]

In your opinion, is the roughly 13.5afr seen with the throttle plate removed at 11:42 (7k rpm?) unsafe for the bike?
Afr at redline didn't seem to change with throttle plate removal, but at around 7k it's much different that stock, do you think that's lean enough to be harmful long term?

[mikemathews]

A really nice video with lots of good information. Thanks so much for producing this video and sharing with others. I am not supported by anyone but did some of my own testing. I would be interested in purchasing your fuel controller for comparison along with other tuning tips. It looks like removal of the secondary throttle plate improves torque/hp response at lower rpm. When do you think your "package" will be available for sale?

One of your viewers asked about an exhaust which creates less noise. I have a db meter I have used in my racing career. Measurements taken 7 feet from the source at 2 foot elevation. For your viewers I have the following comparison of the stock KLX300 dual sport model exhaust vs the FMF Q4, which is the quietest aftermarket exhaust I have found, but added power to the stock engine. I have installed the KX snorkel, Twin Air filter, EJK fuel controller under the left fuel tank side panel, and the FMF Q4 exhaust with spark arrestor to get dyno results of 25.5 hp with 17.4 ft/lbs torque @ 8k rpm vs the stock at 23 hp with 15.4 ft/lbs torque (stock data from Dirt Rider dyno results of a stock bike). The KX snorkel has much larger air intake and provides the vortex velocity to the air box vs an open lid air box.

For me the great advantage of the KLX is torque. I wish you had more discussion about torque along with horsepower. At 4k rpm you get 80% of the torque all the way to when the cam kicks in at 7k rpm with makes it really easy to ride at slow speed with lots of "tractor" like power! I rode the complete route of the Trans America Trail last year and I can honestly say the additional power of the mods on the hill climbs and technical portions of the trail, the KLX preformed excellent! I did change the rear sprocket to a 42T which is much better at slow speeds but runs the engine only 4k rpm higher at any given speed vs the stock 40T rear sprocket.
Exhaust data:

RPM readings @ 2.1k/3k/4k/5k/6k/7k/8k
Stock exhaust db @ 70/75/78/80/83/87/88 with respect to the rpm above
FMF Q4 db @ 75/78/83/86/87/89/91 with respect to the rpm above

I am very interested if you could follow the db test parameters above and test the Barker exhaust pipe for comparison. I have been told the Barker exhaust system is pretty loud.

One additional note....on the Kaw KLX forum, one viewer put together what looks to be a Supertrapp exhaust system on his KLX300 with no other mods and the dyno showed 25 hp, just with the exhaust mods!! I do not find this available on the Supertrapp website and reached out the viewer to see if he would provide parts so that other can do the same, but no response to date...maybe someone else could try.

[dylans]

The pupper @2040 got my like! Thanks for the explanations and filmed testing guys.

[TheStephenspann]

Really appreciate this video. I have a powercommander 6 on my 2022 KLX300R. I know it has the power to control spark as well, but I'm having trouble confirming if spark is infact being controlled on my bike.

[liquidmetal]

Will the current tune on the controller work with a Delkevic exhaust (or at least be close)?

[KeithPattersonD]

Nice video! I have your airbox mod and fuel controller on my 17 Grizzly 700! You should do an XT250! My wife wants more power!

[lukenesemeier]

Hey, where did you get the wrap from if you don’t mind me asking?

[smoothoperator]

Excellent video, thanks for posting! Picked up a lot of great tips and you've got me interested in your fuel controller and that exhaust - found the controller on your website, but not the exhaust - is it going to be produced, and will you be offering it once available? Thanks again and keep up the great work!

[andrerobichaud]

Great video. Do you have a tune for the 2022 Kawasaki KLR 650? I'm like you, I want to have an air / fuel ratio in the 13 when cruising.

[SudburyDualSport]

Awesome work! When do you expect to have the controller on the market?

[philipraposo]

Just so I am clear, with your tuner, air box lid mod (stock snorkel?), barker exhaust, and one throttle plate removed, the whole package will net about 5HP through the curve? If thats the case, what does just the tuner + exhaust put out?

[M-om]

When will the kit be available? Well done, informative video!

[JoeJ]

Will this tuner work on the Klx 300 non SM? Or are there better options out there?

[noidreculse]

Way over my head, but very in depth 👍🏻😎

[jimforsyth.]

Did you make the fuel controller or just make your own maps

[louisethier]

The fuel controler will work the same on Klx300 dual sport?

[evlutionzllc]

Is it possible to gain noticeable power without making the bike louder or with keeping the stock muffler section of the bike? I'm hypersensitive to certain sounds and that brappy exhaust sound happens to be one of them. I really appreciate the way you guys shoot this video, liked, subbed and 'all notified. It's a lot like hanging out there on scene in the shop and really soaking all of the info in. Right about the time I was wondering if you would touch on the secondary throttle plate you went through it in adequate detail. I knew the butt dyno wasn't wrong, lol. I removed mine (what a saga, lol) and it seemed a lot less sluggish near mid-upper RPM range acceleration.