O2 modifier - VERY HAPPY

[lamarguy]

BlackWidow, are you referring to the rubber air tubes on the stock airbox? The tubes are acoustically tuned to lower throttle body and air intake noise. They also benefit from drawing cooler air near the front of the air dam.

The KewlMetal intake will flow more air but, with the plastic body panels in place, will draw more heat radiating from the engine. Clearly, not an ideal design.

And, personally, I'm not a fan of oiled filters (K&N, "Green" Filter, etc.) anyway. I've seen the filtration test results and the synthetic media filters are significantly more efficient and cheaper to maintain over the life of the engine.

I went with the synthetic aFe filter (manufactures the Evoluzione filter) and cut off the interior portion of the rubber tubes.

 

[Campverdefela]

BlackWidow, are you referring to the rubber air tubes on the stock airbox? The tubes are acoustically tuned to lower throttle body and air intake noise. They also benefit from drawing cooler air near the front of the air dam.

The KewlMetal intake will flow more air but, with the plastic body panels in place, will draw more heat radiating from the engine. Clearly, not an ideal design.

And, personally, I'm not a fan of oiled filters (K&N, "Green" Filter, etc.) anyway. I've seen the filtration test results and the synthetic media filters are significantly more efficient and cheaper to maintain over the life of the engine.

I went with the synthetic aFe filter (manufactures the Evoluzione filter) and cut off the interior portion of the rubber tubes.

Yeah, but I enjoy all that space around the engine, easy to change plugs, check hoses, etc, you get the idea. Oh, BTW don't tell my Spyder that its runnig an inferior setup as she runs like she's being chased...Oh...maybe she is....

 

[BLACK WIDOW]

Proof

Your the one that first make the negative comment about the Kelwmetal setup without proof, if your going to say it then back it up.

The proof is in the theory of fuel/air tuning and velosity stacks--You can read the same info that I have. I did some research on the subject since it was of interest to me. To my knowledge the KewlMetal system has never been ran on a Dino so there is no proof for that particular piece of equipment; One can only speculate on performance based on the theory of fuel/air tuning. I must say that if you like your current set-up and don't mind the noise then that is the set-up for you. My experience was much different, the noise was much greater and the performance wasn't . I actually sold it at a substantial loss. The negative statements you are referring to are based on my personal experience, just as yours are on all the performance gains that you say you realize. I do believe that the EVO system has the velosity stacks built into their system and would theorize that the performance would be better.

 

[BLACK WIDOW]

Tubes

BlackWidow, are you referring to the rubber air tubes on the stock airbox? The tubes are acoustically tuned to lower throttle body and air intake noise. They also benefit from drawing cooler air near the front of the air dam.

The KewlMetal intake will flow more air but, with the plastic body panels in place, will draw more heat radiating from the engine. Clearly, not an ideal design.

And, personally, I'm not a fan of oiled filters (K&N, "Green" Filter, etc.) anyway. I've seen the filtration test results and the synthetic media filters are significantly more efficient and cheaper to maintain over the life of the engine.

I went with the synthetic aFe filter (manufactures the Evoluzione filter) and cut off the interior portion of the rubber tubes.

No, I am actually referring to the Hard plastic velosity stacks inside the air box just above, and bolted to, the engine intake. I removed the rubber tubes you are refering to in order to allow unrestricted air flow into the box. The addition of a cold air intake into the stock box with a high flow filter could be a substantial performance gain. IMHO

 

[brutus450]

the proof is that the better the air flow the better the performance - this includes the way air enters the carbs. the purpose of velocity stack to "funnel-ize" the air so its "smooth air" and its not as turbulent when it hits, the smoother the air the faster it enters, faster it enters - better performance. correct?

I know I put velocity stacks on my 63 porsche carbs and it didnt do crap other than look cool. but i dont race it:shocked:hyea:

But then again, Can Am built in the stacks for a purpose but they also designed an O2 sensor that obviously doesnt work that great.

 

[DragonSpyder]

All I know is that if I put my airbox back on in place of the race intake I have to reduce the amount of fuel or it runs rich. That is proof enough for me that it increases airflow and leans out the engine.

 

[altonk]

Given the same pressure differential velocity stacks can help make the air flow smoother but is a relative small gain

The difference between a kewlmetal or race air and stock box is all about pressure drop across filter/box

If u didn't get improvements it because you didn't add enough fuel

 

[bfmtrader]

Two Brothers Juice Box Premuim and 02 Modifier

I have a Leo Vince pipe and the Two Brothers Juice Box Premium. I still get popping on deceleration. Bike acts like it is too lean at idle (ruff Idle and hesitation when rolling on the throttle from idle) Has anyone used a 02 Modifier and Two Brothers Juice Box Premium together? What were your results? Any help would be appreciated.

 

[burg650]

I have been running the 02 modifier for a year and a half and I am going to take it out and put back the stock one. I do like the low end torque it gives but have not been happy with the fuel economy I have been getting and after my last ride from NJ to Lake Placid NY and got an average of 20mpg it's coming off, some have also suggested it might also make the bike run hotter .

 

[spyder@sg]

How is the installation? is it very easy to install, like a 5min job? I am tempted, but have not seen any instructions on how to install the O2... pps:
Tks!

 

[mclovin]

Where do you get a GREEN filter.

 

[Machinegunner]

Velocity stacks help airflow and can be used to tune the torque curve of the motor. Velocity stacks are very important when working with carbs. With carbs there is fuel stand off caused by positive pressure pulse pushing air and fuel back out of the carb. With out velocity stacks that fuel could be lost. The stacks help capture this fuel when the negative pulse pulls air back into the motor. Without stacks or an air cleaner this fuel can be lost and create a lean condition. Short stacks raise torque peak long stacks lower the torque peak. Just as short pipes allow the motor to rev faster and have the torque peak at a higher rpm. Longer pipes rev slower and have peak torque at a lower rpm. With fuel injection the fuel stand off is removed from equasion, although the pressure pulses are still present controling torque. That said I removed half of the stacks in my wifes stock air box because the distance between the top of the box and top of the stacks was only about 1/2 inch. The air had to turn 90 degrees in that close space not condusive to good air flow. I also removed the rubber silencers. She now needs a JBPRO. She does have an O2 mod and can feel the difference. I have the Kewlmetal intake and JBPRO and love it, with the short or no stacks it revs fantastic.

 

[Machinegunner]

Forgot to mention she has K+N filter.

 

[challman]

Make that a Ditto for me!!! Glenn as Big Bird:clap:

I just put mine on today... Ditto for me too....

 

[stutzmason]

Installed my O2 mod today, what a difference, no more popping, pulls better, like a different bike .....

 

[Motavar]

Mine should be arriving shortly. I'm jealous of you guys !

 

[Dtryke]

Is it easy to install?

 

[stutzmason]

Super Easy

Is it easy to install?

Super Easy install ... the only issue I had was removing the old sensor from the pipe ... nothing that a little W-D 40 couldn't resolve to make turning it much easier ... be sure to disconnect the O2 sensor and snake the wire down before you attempt to remove the actual sensor as there is the possibility to twist the wire off of the sensor when removing it.

 

[stutzmason]

Mine should be arriving shortly. I'm jealous of you guys !

It will come soon enough ...you just need to make sure you are good and healed up from your accident ... glad to know you will be ryding again soon

 

[joninthout]

2008 Needs O2 modifier

I have a 2008 GS SM5 with the Hindle pipe and would like to get the O2 modifier. Where can I get one now in 2015?