Air Box Mods for more power

[kenbike]

I plan on installing a Arrow header and using the Two Brothers slip on that was on my used 2012 Tenere. I will have the bike Dyno Tuned BY Wheeler Performance in Robinsville, NC the first week of March after we install a PCV with out auto tune.
I pulled the air box and inspected it last night and it appears I could reduce the intake air restrictions by opening up the intake tunnel in the lower half of the air box. Also may shorten the lenght of the soft rubber throttle body intake trumphets that turn up 90 degrees towards the air filter. I understand you can loose power by effecting the design of the air box so any changes I make will be such that I can repair with plastic or tape if does not imrpove power in the mid range.

Has anybody tried any changes?

Has anybody tried any intake mods to the motor such as porting, valves, or raising compression?

Thanks

 

[greg the pole]

im no tuning guru...but your air/fuel ratio will be off, guess you'll fix it with the PCV.
If I was looking for additional power, headers, slip on, pcv and auto tune....but i'm a cheap bastard,
and the clutch mod will have to do. ::025::

 

[viewdvb]

In theory, shortening any part of the inlet tracts, including the air trumpets, will move the power further up the rev-range i.e. you may lose some at the bottom and gain some further up. (Same general rule applies to exhaust lengths) In practice, the effect may be hard to detect. If that's what you want - fine. Decreasing any restriction to the total air flow, like a freer flowing air filter or greater cross section for the air box intake will be more noticeable once the fuelling is adjusted to suit. Even so, the effect will only be noticeable at high revs and wide throttle openings. No amount of work on the airbox, valves or compression will have any effect when part closed throttles are the major restriction. If you fancy expensive tuning like gas flowing, it probably won't do any harm (except to your wallet) but won't do much good either. Basically, the XTZ motor is not ideal for tuning work. It is designed for exactly what it does now - give a good spread of controllable power. When I ran a race shop for 20 years, my first question to would-be street tuners was always "do you constantly run the engine at peak revs and wide open throttle now?" If the answer was no, the cheapest tuning they could do was simply use the engine harder more often. That at least is free and the engine is designed to take it.

 

[EricV]

When I ran a race shop for 20 years, my first question to would-be street tuners was always "do you constantly run the engine at peak revs and wide open throttle now?" If the answer was no, the cheapest tuning they could do was simply use the engine harder more often. That at least is free and the engine is designed to take it.

::026:: When I ran a Miata tuning/repair/service business for a dozen years, I got customers all the time that wanted a SC or Turbo. I did the same thing, asking them how they drove the car. 95% of the time they were not using what they had and after a demo drive, they would decide to hold off on Hp upgrades and never ask about that again. Many came back and spent money on suspension and brake upgrades though. ::008::

 

[Swagger]

Point well made by both EricV and viewdvb. I always want more power so I always have a ridiculously powerful bike in the stable .... doesn't have to be expensive either. Trouble is I also like drilling holes in things and reducing the weight of bikes (unless it's an adventure bike of course and then I just keep bolting more bits on ..... with titanium bolts you'll understand

 

[avc8130]

I plan on installing a Arrow header and using the Two Brothers slip on that was on my used 2012 Tenere. I will have the bike Dyno Tuned BY Wheeler Performance in Robinsville, NC the first week of March after we install a PCV with out auto tune.
I pulled the air box and inspected it last night and it appears I could reduce the intake air restrictions by opening up the intake tunnel in the lower half of the air box. Also may shorten the lenght of the soft rubber throttle body intake trumphets that turn up 90 degrees towards the air filter. I understand you can loose power by effecting the design of the air box so any changes I make will be such that I can repair with plastic or tape if does not imrpove power in the mid range.

Has anybody tried any changes?

Has anybody tried any intake mods to the motor such as porting, valves, or raising compression?

Thanks

Dragging this back up. Did you wind up trying anything with the air box?

ac

 

[kenbike]

I di not do to time issues. I have a fixed map with out auto tune so i will only try a few holes to see if it improves. I did the air box mod on my 300 Vespa scooter and it really improved the low end power, hopefully it does the same.