ECP MOD (Maximum Oxygen Delivery) Airbox final results.

[Silver]

Here is a question no one has asked but is a big concern to me.What about snow ingestion that is the one thing I hate is a sled that can't bore through 3 feet of fluffy powder with out missing.That was one thing I liked about the RX is the fact you could drive through any amount of snow with out missing a beat.I have the filters on now waiting for winter.So I will see how they work in poweder snow.Supertuner what do you think is the major difference between your two kits why does the air box appear to make more hp.Would the filters work better if they had some type of ram air system hooked to them.Thanks Mike

 

[SUPERTUNER]

Here is a question no one has asked but is a big concern to me.What about snow ingestion that is the one thing I hate is a sled that can't bore trough 3 feet of fluffy powder with out missing.That was one thing I liked about the RX is the fact you could drive through any amount of snow with out missing a beat.I have the filters on now waiting for winter.So I will see how they work in poweder snow.Supertuner what do you think is the major difference between your two kits why does the air box appear to make more hp.Would the filters work better if they had some type of ram ram system hooked to them.Thanks Mike

Actually the topic of snow ingestion has already been talked about. This will not be a problem once you see the airbox. It will have a pre filter similar to the air kit air filters.

I do believe the airbox makes for an environment that the CV slid carburetors works better. This is eveident by the fact that the silver CV slide springs work better than the lighter blue springs. There is more too in that to a point I believe the air turbulence is not as violent inside the airbox versus the air filters. This allows for more precise fuel draw through the jets and better atomization process as well.

 

[Boston RX1]

Freddie you stated in an earlier post, "For example the stock airbox makes 66.6 HP at 6400 RPM's. This is admittedly a downward spike, but the stock airbox doesn't dyno well and there are horrible peaks and valleys throughout the stock airbox dynorun on the graph. The ECP MOD airbox makes 94 to 102 HP at 6400 RPM's depending on how I situate the inner parts of the MOD airbox. The end result is a much quicker acceleration to peak power". Then you stated that the MOD has an additional 10 HP overall throughout the range. In the second statement are you comparing your first kit to the airbox MOD? I just want to keep the numbers straight. I can't wait to see the dyno numbers of the new MOD vs. the stock airbox you did last year. How long do you think you need the sled to do this MOD. No hurry, let me know when you have the answers. Thanks, Dana.

 

[Mighty]

[
Like I said earlier, the power is worth about 10 HP through the midrange and about an additional 4-5 at top end over the air kit.
Freddie

This improvement is over your filter kit? I find that hard to be believe. So what kind of HP numbers does this mod give over a stock airbox?

 

[BADSLED]

4-5HP ON TOP END IS SOME SERIOUS GAIN IF YOU ASKED ME!!

GIVEN THOSE GAINS, MAKES ME WONDER HOW MUCH FASTER WOULD MY SLED BE WITH FREDDIES AIRBOX MOD vs. FILTER KIT IN 1/4 MILE?

 

[Black 1000]

I would also like to know if the gains are compared to your air filter kit or to the stock air box. Is anyone still having problems on top end with the air filter kit? I thought this was adressed, and rather well, by Freddie.

P.S. Freddie you have really peaked my interest and in your expert opinion which option is better for the agressive trail rider that occasionaly likes to kick some a** on a lake or two.

Oh and nice work.

 

[RTX Meirda]

My sled has much better MPH with the filter kit compared to the stock airbox.

We have a bushnell radar gun...and tested both.

This is without the Evac system added.

Ask the ZR900's and F7's.

Had a blast with them last year on Lake of Bays!!!

 

[wolfie]

Wolfie...you would only be "hacking holes in the hood" if you are a hack...sorry but I am not a hack.

Neither am I, trust me, and exactly why it would be nice to see some photos of an actual installation. If this increases power throughout the range, I would assume you'd include jetting and clutching specs?

 

[wolfie]

4-5HP ON TOP END IS SOME SERIOUS GAIN IF YOU ASKED ME!!

GIVEN THOSE GAINS, MAKES ME WONDER HOW MUCH FASTER WOULD MY SLED BE WITH FREDDIES AIRBOX MOD vs. FILTER KIT IN 1/4 MILE?

Probably no faster, maybe even slower, if you don't change the clutching to compensate.

 

[Mighty]

MEIRDA, Great #*$&@

 

[RTX Meirda]

Thanks Mighty.....I have been doing squats in the off season...LOL

 

[QCRider]

I have a question about all of this. Every decision that an OEM makes about how to design a part on a snowmobile results in some sort of compromise. For instance, in deciding what material to use for a suspension component the compromise would be between strength and weight. So you end up using the lightest weight material that is strong enough to be durable (hopefully). There are many things to consider when desingning an airbox, flow of air is only one of them. I am curious to know what you have compromised Freddie in order to get more air flow to the motor. No offense to you, but certainly there are engineers at Yamaha who could have seen that it would be possible to get more air to the motor. My question is WHY didn't they do it? Is it something as simple as maybe the intake noise is a little louder? Or there is a possibility of snow ingestion? Or another simple choice, it would COST more? I'm just curious as to what I will LOSE if I decide to go with this airbox? Which by the way, I am seriously considering once you have it all finalized. As long as it looks professional from the outside. I must admit though, I am not a fan of cutting a hole in my hood. This might keep me from going for it. I like how the sled looks. I wouldn't mind a mod to get me more power so long as it doesn't change the way the sled looks.

 

[Frostbite]

This sounds like a great modification but I am still wondering what happened with the "velocity stack" for use with the ECP air kit? If there's a small gain to be had from the velocity stack Supertuner was experimenting with then maybe the air kit would be worth keeping?
Supertuner, was this concept incorporated into the modified airbox or was the whole idea determined to be not worthwhile? Thanks agian for all your great ideas. PB

PS: I still need to order one of your carb synching tools.

 

[Anonymous]

I have a question about all of this. Every decision that an OEM makes about how to design a part on a snowmobile results in some sort of compromise. For instance, in deciding what material to use for a suspension component the compromise would be between strength and weight. So you end up using the lightest weight material that is strong enough to be durable (hopefully). There are many things to consider when desingning an airbox, flow of air is only one of them. I am curious to know what you have compromised Freddie in order to get more air flow to the motor. No offense to you, but certainly there are engineers at Yamaha who could have seen that it would be possible to get more air to the motor. My question is WHY didn't they do it? Is it something as simple as maybe the intake noise is a little louder? Or there is a possibility of snow ingestion? Or another simple choice, it would COST more? I'm just curious as to what I will LOSE if I decide to go with this airbox?

Oh No not again. I am having flashbacks. Didn't we all learn something from last year about Supertuner and his abilities when he developed the ECP kit. He will not sell something that does not do exactly what he says it will.... Keep up the good work Freddie....

 

[JDKRXW]

I have a question about all of this.

Good question, but I think we need to see Freddies complete installation, specs., pics., and price before getting too serious about all of this.