SUPERTUNER
TY 4 Stroke Master
- Joined
- Aug 16, 2003
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- Location
- Waterbury, Connecticut
- Website
- www.easterncycleperf.com
I am happy to say that our MOD airbox dyno results are finished. I have successfully been able to get this done, but it wasn't easy. I am here to tell you all that the stock airbox is one seriously finicky sonofagun!
Testing yesterday and today went as follows:
Weather conditions were identical the last 2 days. We are now making more horsepower with the MOD airbox than we are with the air kits both at peak and through the early low end and midrange. The ECP MOD airbox absolutely crushes a stock airbox...everywhere!
The difference between my air kits and the MOD airbox on the dyno however is that the MOD airbox makes peak power between 9400 and 10,300 RPM's. The air kits are capable of making pretty much the same power from 9400 all the way to the rev limiter with no drop off until the engine hits the rev limiter.
What this means on our inertia engine dynamometer is that the power under the curve has been dramatically improved. This translates into making more HP in less a duration of time. This is the same phenomenon that my air kits did versus the stock airbox.
What does this mean to people who already have my air kits? If you are wanting max MPH over extreme long distances, stay with the air kit. If you want to reach your max MPH in shorter time...go with the MOD airbox. The advantages of this are that you can now load a lot more weight to your clutch ramps thereby squeezing the belt harder and keep yourself from "driving through the clutches". I see this as an davantage to everyone but the riders who ride in the mountains are going to love this MOD. The reason being is that the increased torque not only makes mountain riding more enjoyable but the heavier weights will backshift quicker to keep the deep snow riders more on and more repsosive to their power range.
Now here is another thing that I didn't want to tell anyone until now...the MOD airbox will require you to modify your hood. Done correctly, it is a sano install and turns you RX1 into a true forced air pressurized airbox. I tune seriously fast 200+ MPH sportbikes, dragbikes and land speed bikes at ECP almost everyday. Pressurized airboxes turn 180 MPH motorcycles into 200+ MPH motorcycles and the same is going to happen with the RX1. THis is where we really won't know the true advantages of this mod until the snow falls and someone gets the MOD airbox out and tries to go 50, 70, 90 and 100 MPH. If my dyno was in a wind tunnel, I could actually see the advantages of the MOD airbox in a real controlled environment. So...I made my own "makeshift" windtunnel where I mounted 4 compressed airguns in a manner conducive to blowing cold air at the MOD airbox. The result was on these tests, I registered over 142 HP. Without the forced air induction, power peaked at 138. Although this was not the environment that the engine is going to experience on a lake or cold winter day in a field, it proves that the forced induction works and works well! At 90 or 100+ MPH you will be able to feed a lot more volume and also colder air than the "makeshift" forced air I constructed. I tested with 180, 185, 190 and 200 size main jets. Sitting still in the dynoroom with a smal fan blowing air around the sled had me in the 180 and 185 size range. The forced air induction resulted in me needing to go to the 190 and 200 size main jets. More fuel required means that more air is available. I cannot say this yet for certain but I do believe that once someone gets one of these MOD airboxes out, they will run a faster top speed than the air kits.
If forced air induction didn't work, every major motorcycle builder on the planet wouldn't have ram air. Greg Anderson, Warren and Kurt Johnson and the rest of the NHRA Pro Stock car and Pro Stock bikes wouldn't have hood scoops and forced air induction. It becomes basically a "natural" turbocharger" in a small sense.
I'm afraid that I am still awaiting on some prices for the rest of the parts to make these kits up so I can't tell you all how much they will cost, but I will as soon as I know everything...probably only a day or 2 away for the rest of the missing prices.
Now my question to all of you...do you see cutting additonal louver cutouts just like the ones that are already in your hood right behind the stock placed ones a big problem?
What I intend to do is provide a template and another aluminum frame like the stock RX1 has and all you will have to do is under the original hood louvers near the nose and have you all install these parts. This will be the forced air inlet for supplying the massive amounts of air that this new MOD airbox needs. It should only take about 1/2 an hour to perform this hood modification. Your thoughts???
Testing yesterday and today went as follows:
Weather conditions were identical the last 2 days. We are now making more horsepower with the MOD airbox than we are with the air kits both at peak and through the early low end and midrange. The ECP MOD airbox absolutely crushes a stock airbox...everywhere!
The difference between my air kits and the MOD airbox on the dyno however is that the MOD airbox makes peak power between 9400 and 10,300 RPM's. The air kits are capable of making pretty much the same power from 9400 all the way to the rev limiter with no drop off until the engine hits the rev limiter.
What this means on our inertia engine dynamometer is that the power under the curve has been dramatically improved. This translates into making more HP in less a duration of time. This is the same phenomenon that my air kits did versus the stock airbox.
What does this mean to people who already have my air kits? If you are wanting max MPH over extreme long distances, stay with the air kit. If you want to reach your max MPH in shorter time...go with the MOD airbox. The advantages of this are that you can now load a lot more weight to your clutch ramps thereby squeezing the belt harder and keep yourself from "driving through the clutches". I see this as an davantage to everyone but the riders who ride in the mountains are going to love this MOD. The reason being is that the increased torque not only makes mountain riding more enjoyable but the heavier weights will backshift quicker to keep the deep snow riders more on and more repsosive to their power range.
Now here is another thing that I didn't want to tell anyone until now...the MOD airbox will require you to modify your hood. Done correctly, it is a sano install and turns you RX1 into a true forced air pressurized airbox. I tune seriously fast 200+ MPH sportbikes, dragbikes and land speed bikes at ECP almost everyday. Pressurized airboxes turn 180 MPH motorcycles into 200+ MPH motorcycles and the same is going to happen with the RX1. THis is where we really won't know the true advantages of this mod until the snow falls and someone gets the MOD airbox out and tries to go 50, 70, 90 and 100 MPH. If my dyno was in a wind tunnel, I could actually see the advantages of the MOD airbox in a real controlled environment. So...I made my own "makeshift" windtunnel where I mounted 4 compressed airguns in a manner conducive to blowing cold air at the MOD airbox. The result was on these tests, I registered over 142 HP. Without the forced air induction, power peaked at 138. Although this was not the environment that the engine is going to experience on a lake or cold winter day in a field, it proves that the forced induction works and works well! At 90 or 100+ MPH you will be able to feed a lot more volume and also colder air than the "makeshift" forced air I constructed. I tested with 180, 185, 190 and 200 size main jets. Sitting still in the dynoroom with a smal fan blowing air around the sled had me in the 180 and 185 size range. The forced air induction resulted in me needing to go to the 190 and 200 size main jets. More fuel required means that more air is available. I cannot say this yet for certain but I do believe that once someone gets one of these MOD airboxes out, they will run a faster top speed than the air kits.
If forced air induction didn't work, every major motorcycle builder on the planet wouldn't have ram air. Greg Anderson, Warren and Kurt Johnson and the rest of the NHRA Pro Stock car and Pro Stock bikes wouldn't have hood scoops and forced air induction. It becomes basically a "natural" turbocharger" in a small sense.
I'm afraid that I am still awaiting on some prices for the rest of the parts to make these kits up so I can't tell you all how much they will cost, but I will as soon as I know everything...probably only a day or 2 away for the rest of the missing prices.
Now my question to all of you...do you see cutting additonal louver cutouts just like the ones that are already in your hood right behind the stock placed ones a big problem?
What I intend to do is provide a template and another aluminum frame like the stock RX1 has and all you will have to do is under the original hood louvers near the nose and have you all install these parts. This will be the forced air inlet for supplying the massive amounts of air that this new MOD airbox needs. It should only take about 1/2 an hour to perform this hood modification. Your thoughts???
