No, you only need to do it the first time you pair the ERM with the ECU. Once it has been done the first time you can then make changes with the ERM and you wont have to do it again. The only exception is if you do a top end rebuild and strip down the powervavle, in which case you would perform the powervavle reset again, or iof you decide to manually roatate th TPS to another setting, in which case you would do the TPS reset again.

@@TwoStrokePerformance Thanks and good to know!

No, you can fit it to a stock bike and its very effective at adjusting the tune.

They sure are! Contact Riley at BRC Racing... brcracing.ca/ He has ERMs in stock and ready to go.

@@TwoStrokePerformance absolutely thank you will be ordering so glad I no longer have to ship out and can keep riding keep up the good work

Probe the Black and Yellow/Red wires on the back of the TPS plug. With both the red and yellow throttle body adjusters backed all the way out you need to set the TPS to 0.40v. If it requires adjustment loosen the torx screws holding the TPS in position, rotate as necessary and then re-tighten until 0.40v is achieved.

@@TwoStrokePerformance When you first back out the yellow know, do you press it in and then back out?

No dont press it in, just back it out.

Not you wont have done any damage. We have updated the process for several reasons. This most recent update, which now includes the adaptive value reset, has come about to bring the process in line with the KTM manual. The reality is that the vast majority of ECUs already have 0.40v saved as the TPS baseline value. For these bikes the adaptive value reset doesnt change anything. Rather than telling some people to do it and others not to, we have simply now said to everyone to perform the reset as a safeguard. The reason we are confident in this process is that we have a database of hundreds of original ECU tunes from ERM customers and can see exactly what value they are already set to. Virtually all of them are already at 0.40.

What is the problem you had? Did you email us directly here in Australia, or was it through one of our resellers? If not email [email protected] and we can help.

Yes the TPS reset is the same as resettign the adaptive values. Its the same process. It teaches the ECU the new closed postion of the TPS.

No you only need to do it once. Think of the ECU as containing one 'tune', and the tune has 2 'maps' within it. The reset applies to the tune and so therefore impacts both maps.

Awesome thanks 👍

Yes it can

Its actually very easy if you follow the steps in the videos. Usually takes about 10-15 minutes in total to setup the ERM and start riding.

Hi, no it doesn't sacrifice top end, however if you are riding faster stuff most of the time you wont notice much difference. The biggest gains are at low revs, approx 3500-5000 so if you are riding in that area a lot you will notice a big difference, but if youre mostly above 5000rpm you wont feel much.

Would love to but those motors dont have the 'Torque Chamber' design incorporated into their powervalve design.

Its not snake oil. Some 2 stroke engines have used these chambers as part of their powervalve design for decades. The old KTM 360/380 motors, and the GasGas (now Reiju) 250/300 motors are 2 examples of exactly the same system. KTM has brought back an old design in the new generation 250/300 motor. Our website gives a fairly clear explanation on how the cover works... here is the text... "At high revs the pressure waves travelling back and forth through the expansion chamber help to supercharge the cylinder, filling it with more fresh fuel/air than it would otherwise receive. This supercharging effect, and the extra power that results, is often what riders feel when they say a 2 stroke is “on the pipe” at higher revs. The downside of this phenomenon is that the same pressure waves that help to supercharge the cylinder at high revs actually make it harder for fresh charge to enter the cylinder at lower revs. This causes a drop in power at low/mid revs. To combat this some powervalve systems incorporate a ‘Torque Chamber’. A Torque Chamber is a chamber on the side or top of the cylinder which is opened and closed by the action of the powervalve. When the powervalve is closed or down, the chamber is open to the exhaust gasses. When the powervalve opens at high revs the chamber becomes closed to the exhaust gasses. At low revs, when the chamber is open, the pressure waves travelling through the expansion chamber enter the Torque Chamber and are dissipated somewhat, losing some of their strength. The reduction in the strength of these waves helps to improve the filling of the cylinder with fresh charge. Therefore, the Torque Chamber adds extra power down low by reducing the negative impact of the pipe in this rpm range. By adjusting the volume of the Torque Chamber we can further reduce the negative impact of the pipe at low revs, and increase power even more. This is how the TSP Oversize Powervalve cover helps to increase power at low revs (approx 3000-5000rpm). In order to find the ideal volume of the chamber we spent months dyno and track testing various designs until we settled on a design that made a noticeable improvement in low/mid torque."

S3 has been making a similar product for the shercos for a few years. Can tell you it 100% makes the bike nicer to ride Awesome to see TSP make their own version

There is absolutely nothing that comes out of TSP that can be labeled or even that closely resembles snake oil. This company hits the high mark for solid performance and then some!!!

@@strictlymitch I will only make one comment to that at what price? If you are a pro and need .5 more then spend the cash. $180.00 + shipping. If they were to show that 0.5 more torque would make significant difference to any rider. If you could see some sort of prospective of the real difference or gain from this modification. A quantitative view. The graph does show a difference but can you explain what that really means? Not some generic term more low end. More yes but quantify that.

My Kawasaki KMX125 has the KIPS power valve system, which has a similar chamber that connects to the exhaust port duct. When the power valves are closed, this chamber is open to the exhaust port, and when the power valves open the auxiliary exhaust ports, the chamber is blocked off simultaneously. It definitely works on my bike in the 4000-6000rpm area. So the modern Enduro and MX bikes work the same way, with a multi function power valve. I've read that because the chamber is effectively a resonator to nullify the action of the wave energy in the pipe, it can only work optimally at one particular engine speed, but in practice the range where there is some degree of useful effect is spread over around 1000rpm. The same thing would apply with an inlet boost bottle, but I don't know if both systems would work together without interfering with each other?

It adds more volume to the power valve / exhaust area. It must change the resonance, like a boost bottle. TSP: post some dyno runs.

There are dyno runs on the product listing...

@@TwoStrokePerformance Is the graph showing rpm vs torque or hp? I assume torque.

It is the same as on the 300

​@@simsonschrauber05, there is a new procedure as the kit has changed slightly.

Yes they sure are! You can contact Steve at South Bay Moto Performance, he has been distributing our products in the USA for a few years now. Also the team at Slavens Racing now have stocks of TSP products as well. Either company will give you great info and great service.

Hi, you can see a list of our worldwide resellers here... www.twostrokeperformance.com.au/resellers/

Yes thats correct.

Thank you What octane fuel do you tune on Have a minor knock with the stock TSP tune but goes away in basic tuning when I select the rich setting

@@med0ri Hi we always use 98 RON non ethanol pump fuel. Different fuels have a very big impact on tungin requirements. For example E10 fuel may need an extra 5% fuel approx. The baseline TPS setting is also very important... needs to be 0.40v. Sounds like youre on the right path by using the richer setting if the engine sounds happier.

Awesome good to hear mate I'm also in Australia and just wanted to double check on octane Thanks for the reply appreciate it