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  1. kuvasz

    Sleds getting consistent speeds at the nbssr

    I've worked on my sled over the last yr after installing the stage 6 by TD. I had a hard time trying to dial the sled in because of the boost changed on my max 20 tune from 20lbs to 17.8lbs. I've had a "lot" of help from jason from turbo dynamics and now I can run 21-22lbs safely on pump gas all...
  2. kuvasz

    I've heard there's gonna be a 10 top list in Ontario?

    I'm not a facebook, instagram or whatever fan. I do like racing though and I've heard there's gonna be some competition this yr. There's gonna be a top 10 list in Ontario? I've been told it's pump gas only/run what you brung/660 and 1320?
  3. kuvasz

    Anyone using 11 tooth drivers?

    I'm going to change my 9 tooth driver to a 10 or maybe 11 tooth driver. I've tt a couple of cat guys and they said they've heard of guys running 11 tooth drivers but you need to keep your track really tight or the studs will hit. I usually run my track tight but I do trail ride quite a bit and...
  4. kuvasz

    What's the fastest sidewinder speed you've seen or heard?

    I have a question for ya. What's the fastest speed you've seen or heard in 660' or a 1320' for a sidewinder? If you post please specify whether it's pump gas or race fuel. I guess I should mention also in stock trail trim or otherwise there could be a million combinations.
  5. kuvasz

    Trying out max spool 19

    I've radar ran my sled all yr on max spool 20 and I decided I'd see how the max spool 19 would work. I found it worked better as long as you had good traction. Boost of max spool 20 was anywhere from 20.2 to 20.9lbs of boost depending on the temp and conditions of the day. My max spool 19 seems...
  6. kuvasz

    23.6mpg with td maxspool 17 lean

    I've tried quite a few different td tunes on the trails to see what kinda fuel economy I could get. I know it will change with the condition; snow, temp, gas quality(91+ octane), lake or trail riding etc. This is what I've found so far. The stock muffler tunes; eco trail and maxspool 16 both got...
  7. kuvasz

    Prices on 2020 srx?

    What kind of prices are you guys getting quoted from your dealers on 2020 srx's? Any idea on prices of 2019 srx trade ins?
  8. kuvasz

    Another win for Turbo Dynamics at the NBSSR

    The "one day" event on sat was a great success for TD and it's customers. They won 1st 134.9mph, 2nd 134mph and 3rd 133.9mph in the spec1 class. I also tied josh with 126.8mph in the open power adder class. The ice was soft and got chewed up pretty quick. I was still spinning at the finish...
  9. kuvasz

    Great weekend for TD at nbssr

    I had a great weekend in north bay at the nbssr event. The crew at the nbssr put on an excellent event and try very hard to stay on top of the track with the changing weather conditions. This time the ice was soft and there was a lot of spinning going on in the 1320'. Everyone tried to stay on...
  10. kuvasz

    srx really working with TD max spool 17

    I first of all want to thank Ben at Turbo dynamics. My friend Tom has had his 2017 sidewinder ltx le with a tune by TD run consistent 135+ to 141mph in 1320. So I decided to tune my new srx with TD. I have the max spool 17 in the sled and run 94 octane only(no octane booster) and currently and I...
  11. kuvasz

    new srx 115mph in 1/4 mile

    We had a good day on the lake. The ice was soft(temp was 4c today) and there was 3-4 inches of wet snow on the ice. My srx is bone stock and we got 115mph in 1/4 mile. Muskoka sidewinder has a video of some runs including my 115mph. I'll also post all the speeds of the sleds today. All runs were...
  12. kuvasz

    Brand new srx does 200kph

    I got my new srx last week and I've finally got it out of the trailer. I wanted to see if it was "all that yamaha promised" in running 120mph. When I unloaded it, I ran it right off the trailer for 2500ft. The speedo finally got to 200kph(125mph) at the very end of the 2500ft. I ran it back and...
  13. kuvasz

    maximum boost on stock motor/91 pump gas?

    There has been many threads about running boost with head shims, head gaskets and lc pistons. What I wanted to know is what is the maximum boost you can run on 91 octane can you run a stock apex engine at sea level? Has anyone tried mixing diesel/gas at higher boost levels? If so what % did...
  14. kuvasz

    Well, there goes that belt!

    I lowered the boost to 5lbs on the old sled to take it out for "free family weekend". I met up with a group of buddies and we went for a 100km ride to get some lunch. Things were going along great, except for the gas mileage, lol. We decided to head for home around 4:30 because the wind was...
  15. kuvasz

    it's like the sled shuts off

    Happy new year everybody! I've got a problem with my 08 apex that has been happening for a couple of years now and it's getting worse. I noticed it a couple of years ago when i'd take off, it would almost stall or shut off for a second then it would run fine. it's not a fuel problem or air...
  16. kuvasz

    chasing gremlins

    i thought i had a fuel problem on saturday but it has shown itself again, POS. i think i'll start from the beginning. the sled ran great last yr, lots of pull and good speeds at 8.8lbs of boost. i added a wahl pump and increased the boost to 11.8lbs and i saw speeds of 132-135 in the 1/4 with...
  17. kuvasz

    a/f gauge seems to be stuck

    i took the sled into the shop yesterday to tinker with the clutches and give everything the once over. when i fired the sled up the a/f is stuck at 14.7. i could tell it was doing it's usual start up with running lean in the beginning then running rich and settling back at idle(which was 12.3)...
  18. kuvasz

    marmora sled drags or gravenhurst radar runs?

    i'm up in the air what to do this weekend. after last weekend i have a better time racing heads up for cash and trophy vs running down a track by myself. i can go to marmora and race 660' heads up in the 4 stroke and king of the ice classes or go to gravenhurst and run 1320' radar runs. i just...
  19. kuvasz

    Would you buy another viper?

    hey guys, i run a apex gt ltx with a stage one mpi. i only use it for racing anymore because the ohlins shock needs rebuilding and the bushings keep wearing out. i have a little sdi 600 skidoo i use as my trail machine. it gets me 20(metric)mpg and never causes me any problems(family owned...
  20. kuvasz

    97mph in 400'?

    i had the sled out getting ready for this weekend. the track i was testing was only 400' and i averaged 95-97mph in every run. i was hitting the rev limiter if i braked/throttle at engagement on take off. if i just throttled up before engagement and hit it, it would just rev to 10,800 and hold...


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