Thoughts: Aftermarket Turbo Kit or New Doo Turbo!?

[NoBrakes!]

Because it works backwards. It is designed to maintain 165 hp. At sea level it create 0 boost and increase boost as elevation changes to maintain 165 hp.

^^^^ this is what we need! freak teaching kinger lol

 

[maxwell]

oh gawd not this again

 

[Longhairfreak]

^^^^ this is what we need! freak teaching kinger lol

Did I make a false statement?

 

[Longhairfreak]

Where did everybody go?

 

[Luke The Drifter]

Is that because you are part of the "no lag" movement? No lag on an aftermarket setup can be " no lag " also - all you need is a bunch of money - running a redline or force turbo 10lb boost kit is by far superior than any other setup IMO - a force turbo or redline kit can be zero lag also - it just needs some re-engineering - no biggie - I did it to my xm - I would easily do it to gen 4 too - real world engineering on the mountain Is also by far superior IMO compared to a bunch of whatever's in a warehouse in Quebec - it's way better to have a one off - IMO//uploads.tapatalk-cdn.com/20200420/50339164f35e82edf64256f97bed35af.jpg

Better tell Carl Kuster that all the R&D he does with Doo’s engineering department isn’t in the mountains...

 

[kingcat162]

Better tell Carl Kuster that all the R&D he does with Doo’s engineering department isn’t in the mountains...

What I meant by this statement - is more like self engineered fixes that an everyday Joe like myself does with aftermarket over the counter parts like in the pic - not poster boy engineering sent back to some people out east - and have them build intake hoses that look like they came off of a 1998 ford explorer intake instead of some sweet looking silicone tubing - but this again is my own personal opinion that I seem to never hold back from expressing - I'll take a heavily modified one off sled anyday over a cookie cutter sled - but not everyone is like me - there are people into cars the same kinda way

 

[Caper11]

Comparing the factory turbo to aftermarket is just nonsense.
The factory doo turbo is a true no lag sled. IF someone thinks an aftermarket kits is zero lag, do some idle to WOT repeated cycles. I bet you will find something out about turbo lag very quick.


If a person wants to put a aftermarket kit on their sled, The kits have come along way over the years, I dunno if this is a polaris thread or a doo thread, but IMO the polaris was always more turbo friendly over the doo.

Regardless I feel Im pretty handy installing turbos, and tuning them. I have not had the desire to own a turboed sled till doo released theirs, so I snowchecked one.

 

[snopro]

Well said Matt

 

[smc]

Polaris is still 3+ years away from anything close to factory boost. They dont have the engineering capacity to launch something that technologically advanced quite yet. Dont hold your breath waiting for that one, you will die.

Polaris is 2 years away at the latest but Im pretty sure it will be released for 2022. Skidoo made a real nice and clean product with that turbo, Polaris’s will be a bit simpler but make more power.

 

[fredw]

Comparing the factory turbo to aftermarket is just nonsense.
The factory doo turbo is a true no lag sled. IF someone thinks an aftermarket kits is zero lag, do some idle to WOT repeated cycles. I bet you will find something out about turbo lag very quick.


If a person wants to put a aftermarket kit on their sled, The kits have come along way over the years, I dunno if this is a polaris thread or a doo thread, but IMO the polaris was always more turbo friendly over the doo.

Regardless I feel Im pretty handy installing turbos, and tuning them. I have not had the desire to own a turboed sled till doo released theirs, so I snowchecked one.

You understand that the new doo is a max 4Lb kit, and the smaller the turbo the lighter the internals.. the bigger the turbo kit the more lag always follows.. just like vehicles, but aftermarket has got the lag down so minimal it's tuff to feel the difference..

The Sibler had no lag either like the tdoo.. but it was not a big hp kit either..

But it all comes down to what your after or want to spend

 

[Caper11]

You understand that the new doo is a max 4Lb kit, and the smaller the turbo the lighter the internals.. the bigger the turbo kit the more lag always follows.. just like vehicles, but aftermarket has got the lag down so minimal it's tuff to feel the difference..

The Sibler had no lag either like the tdoo.. but it was not a big hp kit either..

But it all comes down to what your after or want to spend

Yep I do, The tdoo is capable of alot more boost as well, and it will still be lag free.

 

[fredw]

Redline has got Some new internals lately And is boring out the housing for new tdoo but airbox will be replaced from my understanding from extra volume coming.. Minimal lag like his other kits..

 

[snopro]

Personally I think their are markets for both aftermarket and factory turbo kits. If you want big power and can live with no warranty then go aftermarket. If you want 165HP all the time and like warranty get the TDoo. I really don't understand why anyone would buy a brand new TDoo and void the warranty for a modest gain. Whats the point?

 

[Frankenytro]

BOOOOOOOST! That’s why lol. Same reason why there are many many guys on here who have never even ridden an alpha in stock form but are still rocking 10# and not looking back.

Personally I think their are markets for both aftermarket and factory turbo kits. If you want big power and can live with no warranty then go aftermarket. If you want 165HP all the time and like warranty get the TDoo. I really don't understand why anyone would buy a brand new TDoo and void the warranty for a modest gain. Whats the point?

 

[ABMax24]

Yep I do, The tdoo is capable of alot more boost as well, and it will still be lag free.

I'd really like to see proof of that, it goes against everything known about turbos and boost. Turbos create lag, the more boost you run the more lag you create. Unless they try to run stupid high drive pressures but that is counter intuitive to making horsepower and would be extremely hard on that 850 motor.

I think people are confusing lag free and low lag, which is understandable on a motor that only makes 25% more power at elevation due to boost. Up that to 50% of it's power at elevation coming from boost and the feel of normal turbo lag will set in. Skidoo can't defy the laws of physics. To spool the turbo first the engine must rev up, it must then pump enough exhaust into the pipe to start building back pressure, now it must increase the back pressure enough to increase the air velocity through the turbine volute, the turbo can then start to spool up, finally once its spooled it can build boost. This is the same thing every aftermarket kit does as well, and it is well known that low pressure aftermarket kits have faster turbo spoolup compared with higher boost kits. It's really easy to say your turbo is spooled when its only going to 2.5 psi, it simply takes more time to build enough compressor speed and pump more air into the intake to reach 8 or more psi. Skidoo will realize this once they try to pump up the power.

 

[Caper11]

I'd really like to see proof of that, it goes against everything known about turbos and boost. Turbos create lag, the more boost you run the more lag you create. Unless they try to run stupid high drive pressures but that is counter intuitive to making horsepower and would be extremely hard on that 850 motor.

I think people are confusing lag free and low lag, which is understandable on a motor that only makes 25% more power at elevation due to boost. Up that to 50% of it's power at elevation coming from boost and the feel of normal turbo lag will set in. Skidoo can't defy the laws of physics. To spool the turbo first the engine must rev up, it must then pump enough exhaust into the pipe to start building back pressure, now it must increase the back pressure enough to increase the air velocity through the turbine volute, the turbo can then start to spool up, finally once its spooled it can build boost. This is the same thing every aftermarket kit does as well, and it is well known that low pressure aftermarket kits have faster turbo spoolup compared with higher boost kits. It's really easy to say your turbo is spooled when its only going to 2.5 psi, it simply takes more time to build enough compressor speed and pump more air into the intake to reach 8 or more psi. Skidoo will realize this once they try to pump up the power.

I think you, and others are forgetting about the design of the doo turbo system.
The doo turbo has new designs incorporated into it, that no other turbo kit has ever had.
Have a look at Carl kusters turbo talk on Facebook. Very good vids explaining the design.

 

[maxwell]

I think you, and others are forgetting about the design of the doo turbo system.
The doo turbo has new designs incorporated into it, that no other turbo kit has ever had.
Have a look at Carl kusters turbo talk on Facebook. Very good vids explaining the design.

Precisely. The airbox bypass and the electronically controlled wastegate combined with the turbo position are all things not done on aftermarket kits. Having that wastegate precisely controlled by the new computer with the wsstegate valve design is a big advantage

 

[ABMax24]

I think you, and others are forgetting about the design of the doo turbo system.
The doo turbo has new designs incorporated into it, that no other turbo kit has ever had.
Have a look at Carl kusters turbo talk on Facebook. Very good vids explaining the design.

I don't care what they did to it, short of putting an electric motor on the turbo you won't get instant spool. The skidoo turbo runs a large tuned pipe like every other turbo sled, it takes time to pressure that up to drive the turbo. They may have elements that decrease lag like lightening the rotating assembly of the turbo and changing the turbine housing design. But eliminating turbo lag completely is impossible with an exhaust gas driven turbo.

The big thing why it feels lag free is the fact that a relatively small amount of power comes from boost, meaning it doesn't have a huge power hit like many are used to. Also because of that it's not clutched aggressively requiring full boost to enter the power band.

If this sled was pushed to 8 lbs boost and clutched accordingly it would feel like most other aftermarket turbo sleds. Surely by now someone has done it and has some videos to post.

 

[ABMax24]

Precisely. The airbox bypass and the electronically controlled wastegate combined with the turbo position are all things not done on aftermarket kits. Having that wastegate precisely controlled by the new computer with the wsstegate valve design is a big advantage

No not at all. On any turbo the wastegate is closed until desired boost is achieved. Electronically controlling it does absolutely nothing for spool up. It may help control the boost better, but not help to spool better. I also fail to see what the turbo position has to do with anything other than maybe weight distribution as it is more centered in the chassis. The turbo has been placed at the end of the tuned pipe like every aftermarket kit available right now. The only thing the turbo cares about is the volume of pipe between it and the engine that needs to be pressured up to then drive the turbo.

 

[maxwell]

No not at all. On any turbo the wastegate is closed until desired boost is achieved. Electronically controlling it does absolutely nothing for spool up. It may help control the boost better, but not help to spool better. I also fail to see what the turbo position has to do with anything other than maybe weight distribution as it is more centered in the chassis. The turbo has been placed at the end of the tuned pipe like every aftermarket kit available right now. The only thing the turbo cares about is the volume of pipe between it and the engine that needs to be pressured up to then drive the turbo.

Disagree, because they can control that now. Otherwise they would have just put a crappy 4lbs wastegate Spring in instead of engineering an electronically controlled one. The turbo is WAY closer to the intake than where they are mounted aftermarket. That makes a difference. Shorter the intake track the better. From a boondocker sidekick it’s probbaly 12-16 inches closer.