[davidstinson70]

just wondering how well it works and if there is any install problems i should watch out for?

 

[bogie]

Search "motohooligan" on here and you should find a few owners. It looks like the same thing just marketed by TAB.

It seems TAB are claiming +5bhp at the wheel for the airbox yet many owners say it didn't make any difference. Perhaps the engine also needs a remap after fitment to see optimum gains.

 

[rbabos]

Search "motohooligan" on here and you should find a few owners. It looks like the same thing just marketed by TAB.

It seems TAB are claiming +5bhp at the wheel for the airbox yet many owners say it didn't make any difference. Perhaps the engine also needs a remap after fitment to see optimum gains.

I feel any real claimed gains are more from the actual tune then the breather itself. Same can be had with a stock bike and no mods.
Ron

 

[bogie]

I feel any real claimed gains are more from the actual tune then the breather itself. Same can be had with a stock bike and no mods.
Ron

I would agree Ron.

Save the $500 towards some other more noticeable mods.

 

[Knut J]

Save the $500 towards some other more noticeable mods.

Modified exhaust & suspension..

 

[davidstinson70]

Modified exhaust & suspension..

I have Legend Suspension and a CFR exhaust chain drive guess I'm running out of things to do other than put some more miles on it.

Thanks for your input.


David D Stinson

 

[Knut J]

guess I'm running out of things to do

My Street Rod has a Motohooligan box, unfortunately it does not feel like any power increase after assembly / dyno sessions / other engine configurations. If there were to be a couple of horses to be found, it should have been done in conjunction with extensive engine building. But yes, the MH box looks good!
Another interesting project for you could be to upgrade the fork?

 

[bogie]

I upgraded the forks with Traxxion Dynamics cartridges and it was well worth the expense. Other mods that make the most difference to acceleration and handling are light wheels like BST carbon. A lithium battery is another easy weight saving. Changing the wheels and losing unsprung weight feels like you have added another 20bhp .

 

[2003 VRod Rider]

I upgraded the forks with Traxxion Dynamics cartridges and it was well worth the expense. .

Please tell me more about these cartridges.

-Sean

 

[bogie]

See link here AK-20 Axxion Motorcycle Fork Cartridge Kit - Traxxion Dynamics

they are a popular high end upgrade, short of fitting complete new Ohlins forks they are pretty much as good as it gets

 

[streetrodracer]

The other ( not impressive ) factor with the MH airbox is the silly ass oil breather towers to be 100% sure the oil goes straight down each throttle body. DUMB. Behind the times - remove those and offer a built in JLT or Mishimoto oil catch can and now you got something for a definite performance improvement in addition to the good looks. MH missed a great opportunity there, maybe they could come out with MH Airbox 2.0 and enter the current state of the art for clean intake tracts and carbon deposit reduction by adding an oil catch can.-

 

[rbabos]

See link here AK-20 Axxion Motorcycle Fork Cartridge Kit - Traxxion Dynamics

they are a popular high end upgrade, short of fitting complete new Ohlins forks they are pretty much as good as it gets

Pricey but the best there is. Keep in mind, inverted forks need to be sent in for the cartridge install. Axle blocks need to be pulled and cartridge attachment discs added, then the tubes reinstalled into the axle blocks. Beyond most to do this extra task. Standard forks, owner can do the self install.
Ron

 

[rbabos]

Yes, most never clue into that oil eating feature of that unit. Bad design in my view and like you say. A bit of rerouting the plumbing and a separate catch can is needed for it to be optimum.
Ron

 

[Knut J]

A bit of rerouting the plumbing and a separate catch can is needed for it to be optimum.

Ordered some 3/8" hose for this yesterday. There is a recess in the floor of the MH box, should be able to lead the hose there and no need for a catch can..? The intake ducts looked clean but then the engine has only been driven a few 1000 km.

 

[davidstinson70]

The other ( not impressive ) factor with the MH airbox is the silly ass oil breather towers to be 100% sure the oil goes straight down each throttle body. DUMB. Behind the times - remove those and offer a built in JLT or Mishimoto oil catch can and now you got something for a definite performance improvement in addition to the good looks. MH missed a great opportunity there, maybe they could come out with MH Airbox 2.0 and enter the current state of the art for clean intake tracts and carbon deposit reduction by adding an oil catch can.-

thank you for your input much appreciated.

 

[streetrodracer]

Ordered some 3/8" hose for this yesterday. There is a recess in the floor of the MH box, should be able to lead the hose there and no need for a catch can..? The intake ducts looked clean but then the engine has only been driven a few 1000 km.

Knut - I believe you'll need some type of an oil catch can if the engines not ingesting the oil from the MH vent towers to prevent oil mist and oil dripping on your engine and eventually rear tire. As you may have seen my prior post I built my own catch can out of a translucent plastic bottle and it seems to work very well, I'll see how much oil collected in it during the last 500 miles during bike week riding and let you know, it may not be a lot but allowed to vent it would be a huge mess I'm pretty sure. I have taken a nylon fuel filter and put it on the vent hose on another bike and that actually worked pretty well, if it's higher than the oil return line to the cam box it'll even drain some of the oil the filter catches back when you shutdown. A catch can is the best setup though.

 

[streetrodracer]

Knut - Just got back from Leesburg Bike Fest, so now about 600 miles since I installed the oil catch can, it only has about a tablespoon of oil in the bottom - inside air filter area and intake tracts totally clean & dry. So imagine just a tablespoon of oil misted around your cylinder heads every 600 miles - not a lot but may be potentially messy long term. You could try to vent thru a couple fuel filters they may catch most of the oil or just make ( like I did ) a homemade or install a JLT or Mishimoto oil catch can and be done with it. BTW I saw TAB performance trailer and techs at Gator H-D and spoke to them about losing sales of the MH Airbox due to the old school oil vent towers vs an oil catch can. He said he'll talk to the MH guys about it and see if they will mod their airbox with an oil catch can - might take a year to work thru the system but you can do it on your own pretty easy. If you do post photos !

 

[Knut J]

Going to do it, the riding season is just around the corner here in the north, working on the R at the moment and getting it ready to ride.
Thanks for the follow-up.

 

[streetrodracer]

Knut one clarification - the home made oil catch can I installed on my R is in addition to the H-D OEM oil separator ( it catches oil vapor coming out of it's upper atmospheric vent ) so if you have the MH Intake with no OEM oil separator you will need an aftermarket or home made oil separator pretty much for sure, not just a vent hose and fuel filter on the end. The tablespoon of oil I trapped was after the H-D OEM sep unit so without that you would be venting more oil than mine - when I RTV'd the lid on the OEM separator and added packing it really slowed down the amount of oil spewing out of it at the cover split seam so I know the OEM separator works, and drains back into the rear cam box cover on shutdown. Just didn't want to mislead you if I didn't fully explain that - best of luck with it !