The intake on a stock filter is pretty small and it comes from inside the motor where all the hot air is. Just having cooler air is going to help and having more air helps even better. :bigthumbsup:07black109 said:Ok, i understand that its part of your intake, but is the actual air coming in from the front of the bike that small? Also, does these conical filters get in your way when you ride? It looks huge....
Direct line at the top of this page will sale them too you, you can also ping Hal on monday he posts his cell number on his posts and he works with direct linegval said:I need the big air chrome.Where do I send the cash?
Engine dynamics 101:07black109 said:Ok, i understand that its part of your intake, but is the actual air coming in from the front of the bike that small? Also, does these conical filters get in your way when you ride? It looks huge....
I think he forgot to mention the part about it also being uphill, trailer was about 300lbs I belive and his GPS was showing 122+...Lamonster said:I did a little a trip that was a little over 4000 miles with the prototype BigAir and there were no issues with leg room, rain, heat or anything else. It worked flawlessly and I could walk away from a stock 109 pulling a trailer. That's the big deal about the BigAir.
I am very turned on by this....... actually tent-likeBlackCherry said:Engine dynamics 101:
Consider that your engine is basically a huge air pump. Now imagine the stock engine as basically breathing through a straw. Now replace that straw with something much larger like a toilet paper roll. It's like your stock bike has asthma, and giving it a freer flowing airbox is like giving it a blast from an inhaler.
So now you are pumping a lot more air through the engine, right? This throws off your air:fuel ratio and the bike will be running lean, too much air in relation to the amount of fuel. This makes the engine run hot. If you increase the amount of fuel to bring your air:fuel ration back where it needs to be you will allow the engine to run cooler (I know it doesn't really make sense that burning more fuel will make the engine run cooler, but it does). Of course burning more fuel and moving more air has other effects on the engine. Getting more air and fuel into the combustion chamber = bigger explosions = lower gas mileage = more horsepower. To make the bike pump more fuel you need to send different signals to the fuel injectors telling them to spray more gas for longer periods of time. This is done with a Power Commander III or similar device. The next problem you come up with is having a free enough flowing exhaust to be able to proper expel all those extra exhaust gases you are now creating. If you open up the intake to bring in more air you gotta also open the exhaust to keep the air pump (engine) operating at maximum efficiency.
So in my opinion you should really do all 3 steps at once: free flowing airbox, free flowing exhaust and PCIII. The combination of these 3 things will give you quite a performance boost and your engine will be running much more efficiently. Sometimes doing these things will actually make your mileage INCREASE as your engine can perform the same amount of work much more efficiently but most people just ride harder so any mileage gains end up being negated. But that's the fun part!!Â :bigthumbsup: :doorag:
Hope this helps.Â :super:
Sorry if my explanation was a bit elementary for you, it was meant for anyone reading this thread that didn't understand this stuff, not just for you. It seems I even got one fella turned on with my explanation. :a20:07black109 said:I understand engines and how they work. I just didnt know that the intake was that small inside of the engine compartment sucking in the hot air from around it. Also, from what i have been taught, every degree cooler in temp that the air is, there is a .5 increase in hp. I will have to find the ad i found that in. I dont know if its that linear, but i do know it makes a big difference.
That one you have lamonster, looks good, the one im talkin about is the one with the big hose on it then the conical filter on it.
Also, with that big air, do you have to remap? Do these bikes use pc3 usbs? Or is it something else?
Great info guys! Keep it coming and thanks!