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Do this sensor work ok, someone ever had a fault code from the knock sensor ? I think its code 65. I know it should retard ignition, but I dont know how much. What kind of signal is coming from the sensor, only on/off or does it feel a little bit detonation and retard timing a little bit, and...

I have a friend with a broken 2011 engine in an Apex. He can get hold of a 2008 engine. Will it fit, have anyone done this ? Do he need to move many parts over from the 2011 engine to the 2008 engine. Stator and rotor maybe, any sensors; knock sensor and cam position sensor How will the 2008...

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Is there any adjustable weights that can be used in the orginal clutch to handle 400 hp ? Sent from my iPhone using Tapatalk

Boost-controller, af, fuel pressure, intercooler-temp

Will it be any practical difference beetween JE and Carrillo pistons. Is the strenght the same, will there be less oil consuption with the Carillo pistons because they use oem yamaha rings. Is the weight the same, will it influence the power Someone have any experience ?

Will this be to big to Apex turbo Thinking about 350-400 hp Injector Dynamics 725cc for 06-12 Yamaha Apex Snowmobile [ID725Y] http://turbomaniacs.net/catalog/product_info.php?products_id=650

Hello A friend of mine blow the headgasket at his 2011 Apex. He has a MCX 290 kit, and that kit have a thicker headgasket. How do you tighten the headnuts ? In the MCX installation manual it said to tighten the gasket in three steps, 20 nm, 35 nm and 50 nm. In the Yamaha service and...

Hello I was told from a friend of mine who has talked to Eric at MCXpress that the standard injectors at the 2011 Apex can't handle more (give more fuel)than 14-15 psi (standard pressure MCX290). Someone who knows if this is the true? Is it possible to change the standard injectors to...

Hello The snow has just arrived after a long summer, so its time to think about the sled again. I'm not satisfied with the supertips weight when I'm driving with more than 18 psi. After reading some in this forum, I found that the Heel clicker 2 speed would be better. Where is the best place...

Hello I need some help here. The sled is a APEX XTX 2011, with MCX 290 Earlier this winter I had no problems driving with 19 PSI for very short runs 500-660ft with premium fuel. I never use to run any longer with full throttle. The sled worked all god and no error codes. For a couple of...

I assume I can just replace my oem map sensor with a 3 bar sensor if I adjust the fuel-table. What sensor should I buy ?

The MCX system bypass the OEM mapsensor allowing it vacuum but no boost. Is it possible to replace the OEM sensor with something aftermarked ?

To get the best possible acceleration, how should the RPM be ? When you start from zero, and hit full throttle. Is it best that the RPM starts a little low lets say 10300-10400, and then works up against normal 10600-10700. ? or is it better it starts at 10600-10800, and holds same RPM...

Hello I've started with some remapping of my 2011 Apex MCX 290 Here is my fuelmap-table, are you others somewhere close ?

Hello I thought of installing this two gauges from AEM, someone uses them ? and having some experience ? -Wideband Failsafe Gauge AEM Part Number 30-4900 -TRU-BOOST - Boost Controller Gauge AEM Part Number 30-4350

Hello I have a 2011 Apex, with MCX 290, running at 16-17 psi, at premium fuel. When I hold the throttle open for 8 to 10 seconds something is working against the sled. I can't see at the RPM-gauge in that speed, so I don't know if it's falling, but something is working against the sled...

Is there any stiffer spring than the white for the secondary? I'm running the white at 6-2 (80 degrees) will there be any problems to run in 120 degrees?

Hello We had a little race today with a stock 2011 Apex XTX, and a stock XF 1100 Turbo 141". I can't understand why so many people are braging about the new cats. It most be the slowest hiperformance sled I've seen in many years. It was very many sledlenght behind the Apex in a 660ft...

Hello My Apex XTX is running to fat. The MCX 290 kit it's just installed. The sled hesitate in acceleration, and when the sled idle it's not clean. When slow-running it's fat, but in high speed with much boost, I don't feel anything wrong. Could the problem be that I have capseled the...