Mach Z not stock king of the lake.

[NYTurbo]

I sent my findings to Mr. Knapp via email he has the video showing the boost its able to run.

20 psi ?

 

[TurboJamie]

20 psi ?

On my gauge I can get closer to 22 psi, its past the 20 and my gauge only goes to 20. I have another gauge I will run but our season is about over. That day I took the video was +5 *C I was seeing about 7600-7700 RPM at 15 psi boost. You can turn it up to stock 17-18 psi on a warm day and get back all the lost power. I have found I can go about 22 psi before I get a code but the code only comes when trail riding on sport mode it spikes the boost too quickly. But at 17-18 psi where its supposed to run it works perfectly.

 

[Simplespeed]

Nice information and 22 psi is getting with the program…

 

[sideshowBob]

My Attak easily outran my friends 900R today in mid range and top speed on loose snow trail conditions. I didn't take my SW on the ride as the conditions were fairly warm at 0c/32f.
These 900R Doos definitely need help.

 

[Motorhead]

My Attak easily outran my friends 900R today in mid range and top speed on loose snow trail conditions. I didn't take my SW on the ride as the conditions were fairly warm at 0c/32f.
These 900R Doos definitely need help.

Ouch!
My buddy had a yamacharger and Gforce clutch kit on his Apex LTX.
It went surprisingly well!

As for some of The Doo 900R’s, there’s always next year and the hopes of an upgrade flash and clutch kits!

 

[Crossfire12]

Look at that gauge 20 psi and only 94 mph or those gauges lie, looks like a dud

 

[Simplespeed]

Look at that gauge 20 psi and only 94 mph or those gauges lie, looks like a dud

It may be a dud, it may not… Looks can be sometimes deceiving, never under estimate others as with time they may just surprise you…

 

[sideshowBob]

Look at that gauge 20 psi and only 94 mph or those gauges lie, looks like a dud

I would think the sled is still accelerating in that pic.

 

[earthling]

I would think the sled is still accelerating in that pic.

It is, its 99MPH in the next image, still at 8000 RPM

 

[Simplespeed]

It is, its 99MPH in the next image, still at 8000 RPM

View attachment 167638

Yes I agree and thought same …

 

[KnappAttack]

Jamie is showing the boost increase over stock whilst using the stock ECU, not the top speed. The sled is still accelerating.

 

[Doc Harley]

No biggie Ziggy....

 

[74Nitro]

I like it when the cable is hooked right to the throttle body shaft.

 

[Doc Harley]

I like it when the cable is hooked right to the throttle body shaft.

That & three throttle bodies are better than one. Lol.
I'm just glad Ski-Doo addressed this. It's seemingly been a nightmare for most. (Not all)

 

[74Nitro]

That & three throttle bodies are better than one. Lol.
I'm just glad Ski-Doo addressed this. It's seemingly been a nightmare for most. (Not all)

Yamaha and Cat have the intake design done right.