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Sweatshop Added a reply to Info about engine tuning stages.
11/25/2019 4:02am Thanks for the input. But naming aside then, what’s commonly done? Is it only porting skills for example that sets tuners apart from eachother?
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Sweatshop Added a reply to Info about engine tuning stages.
11/24/2019 7:53am Ok, fair point. Maybe that’s more company specific. But to get clarify my question, what differs an AMA race engine to a B class amateur engine? Im just interested on what’s done with them, and how far they take it.
Sweatshop Started a new thread Info about engine tuning stages.
11/24/2019 2:21am Im wondering about all these different tuning stages, stage 1, 2 and so on. Do anyone know what all these stages actually involve? What is commonly done to increase performance in mx engines? Higher compression, head porting, cams, stronger rod and maybe balancing? Im quite knowledgeable in automotive performance engines but not single cylinder, and I would like to know...
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Sweatshop Added a reply to Anyone here get PSP for injury recovery? (platelet rich plasma)
12/27/2018 4:03am I've had about five cortisone shots in my wrist. First one was absolute magic, the second one was good, the third one mediocre and the last two were completely useless. Im now in some form of a study/trial with PRP-injections and I've had two so far with little to no recognizable effect other than the horrible pain during the injections.
Sweatshop Added a reply to MXGP silly season18/19
12/1/2018 4:52am More on JWR Yamaha from MXvice. Introducing the new JWR Yamaha Racing team
Sweatshop Added a reply to 2014 YZ450F DC power
1/23/2018 1:20am As I previously said. Make a Y-connector to fit the capacitor under the seat, and wire in a switch. I run 60W LED, so 4-5 Amps and need to switch it off to start. 
Sweatshop Added a reply to Is anyone running on E85?
6/11/2017 4:24am The biggest problem I've seen is the residue and pump inconcistency. Redline's SI-Alcohol and Quickfuel measuring glass can make magic.
Sweatshop Added a reply to Brand new 2017 yz250f needed valve adjustment??
1/20/2017 9:15am The only time I've seen valves needed to be adjusted on these it was caused by the bike sucking dirt. Otherwise I've seen the 250s with hours ranging all the way up to 230h without adjustment.
Sweatshop Added a reply to Stock vs Mod?
8/8/2016 3:57pm Portable dyno and random inspections. Job done.
Sweatshop Added a reply to 2014 YZ450F DC power
7/20/2016 5:38am Y-harness to the capacitor under the seat works well. Wire in a fuse. I have a 60W LED light with about 1 billion Lumen on a 250F and that is cutting it close. It's a flickering a bit at idle and it doesn't start cold (winter). But once hot there's no problem.
Sweatshop Added a reply to 2015 YZ250F PROBLEMS!
12/15/2015 10:29pm If it stays the same (while revving), your sensor is broken or unplugged. The air pressure sensor is connected to your intake to measure intake pressure which will be lower than atmospheric with the engine running. To calculate charge density the ecu needs very accurate pressure and temperature readings.
Sweatshop Added a reply to 2015 YZ250F PROBLEMS!
12/15/2015 9:59am Did you check that the air pressure sensor reacts? Either start the bike with the tuner plugged in or use a plastic syringe.
Sweatshop Added a reply to 2015 YZ250F PROBLEMS!
12/11/2015 11:00am I know, sorry. I was replying "jaybird".
Sweatshop Added a reply to 2015 YZ250F PROBLEMS!
12/11/2015 6:21am Replaced? You can start your bike with your Power tuner connected and see the sensor input.
Sweatshop Added a reply to 2015 YZ250F PROBLEMS!
12/11/2015 12:53am Air pressure sensor?
Sweatshop Added a reply to 2016 KTM 250sxf break in?
12/8/2015 9:41am Just thought it might help someone else. Seems to be a lot of different theories.
Sweatshop Added a reply to 2016 KTM 250sxf break in?
12/7/2015 11:40pm Bedding in rings, which is what this is all about is in theory quite complex, but in practice pretty straight forward. The surface of the rings and bores is microscopicly rough and need to be worn. In order to make them wear you need the rings to push against the bores, so you need gas pressure. The theoretically correct way...
Sweatshop Added a reply to 2015 YZ250F PROBLEMS!
8/8/2015 3:30pm I just wanted to share my experience as a Yamaha mechanic who rides a 2014 YZ250F. Sorry for a long post. Obviosly there's not many dirt bikes that come through our shop. I've had two new generation dirt bikes and one of them had no valve clearance (a lot of sand in the airbox) and one with a broken killswitch...