Search results

I have a 2014 Yamaha apex with the Mcx 200 kit . I just noticed after long rides that the small coolant reservoir is always almost empty . The overflow always remains full . Does the overflow introduce coolant as needed ? The engine temp always runs steady at 155-170 and I installed the temp...

Installing a MSD Launch Master and would like to run it off my brake switch . Is this the best way to go and does anyone know which wire coming out of the brake switch I should tie into , thanks

Installing a MSD Launch Master on my MCX 200 . Would like to run it off my brake switch . Is this the best way to go and does anyone know which wire off the brake switch I tie the blue wire into ? Thanks

Running Apex mcx 200 kit . Will a lower engagement give you better hole shot ? Is it better to come out of the hole softer and build boost slowly so you don't blow out the track ? Have dalton B/S ,B/O and a bunch 0f Yamaha springs WWW, YWY,BPB,BWB,GSG,YSY to pick from.

Just saw a post on the Winder trail section of a guy that had a Composit ( Russian made ) model 320 137 snap it half at high speed . The 320 is a brand new model with a lighter rubber compound which could be the problem or it just may be a one off. I'm running the 32s which is a 2 ply pre...

Been chasing the 5.5 lbs very tough to hit. Does anyone know what the baseline actuator spring tension might be on a sea level mcx 200 kit for an Apex. As a baseline I set it so the adjustable tab would just slide over the flapper pin with almost zero tension with the flapper fully closed. I...

Anyone know what this square electrical box is ? It has a bleed valve which vents to atmosphere, I’ve just pulled the hose off . I do have the AEM failsafe gauge installed and I'm wondering if it's related to that . I’m about to install a Hallman Pro XS manual boost controller and I’m not sure...

Switched from 290 supercharged xtx to 2013 Se with mcx 200 kit on it and really like it . Anyone willing to share a their MCX fuel map and basic set ups ? I think stock compression I'm maxed out at 5.5 boost ? Running Supertips with 2 Tungstens in bottom , 3 mid and 1 tip ( 80 Grams ) Custom...

Cannot get this thing to run well at all . I rode a 2008 stage 1 shimmed at 10 and it ran flawlessly . I leaked this one down and it was perfect. Hurricane voltage clamp , PC5 runs like #*$&@. Talked Allen at Ulmer and he said he gave up trying to tune the 2011's . Said he never could get them to...

2011 Apex XTX 4100k. Under high rpm it started to push some oil out the PTO seal behind the primary. Has anyone ever seen this happen before , not good ?

Fixed

Anyone have a good map they can share ? 2012 Apex XTX , MPI Stage 1 , 10 lbs. Head Shim , BOV , Voltage Clamp . Just picked it up and haven't had a chance to ride it yet. Did a leak down on it and it's really good. 12.3 at idle runs nice. Just off idle as its coming into boost it's missing...

Can I run 12 lbs on pump fuel with head shim or should I leave it at 10 ? Has 26bx24t which after doing some research should be 10 lbs. I have a 27b that i could put on which I think would get me closer to 12 , thoughts please.

Picked up a 2012 Apex XTX MPI Supercharged . Has PC5 and head shim and upgraded fuel pump. Looking at the pulleys it's 26bx24t . Any idea what kind of boost this will make ?

Just picked up a 2012 XTX Stage 2 MPI Supercharged Apex. Has steel pulleys , top is a 24 bottom is not marked but looks like a 27 or 28T. Any idea what lind of boost it will make ? Motor is shimmed with head studs. Thanks

Yamaha discontinued these. I"m running a xtx and would like to buy a set if anyone has a pair. Thanks

Had a visit with my local dealer and he told me the mountain versions are no longer available. I run the xtx and like running the longer mountain duponts to move the inserts all the way back. Anyone have a set ?

Anyone out there had a chance to run these side by side ? I think it would be close

Nytro XTX, stock compression and fuel system. Ran 3 pulley combo's @8900-9000. 29bx28t made a solid 8+ with boost fuel and main fuel maxed AFR got high quick 13.2-13.7.Next 28tx28b made a solid 7.2-7.5 afr a bit better at 12.8-13.2., still too high. Last 27bx28t makes 5.8-7 with afr 12.3-12.6...

Can I push it a bit more ? Nytro XTX Stage 1 with inter cooler and cold air kit ( moved the intake vertically out and up out of the hood . No fuel pump or head shim.Running 1" 1/8 ice attack with 224 studs as well. Had it geared 22x39 just changed it back to stock 21x39. It should hook like hell...