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Airbox modification?
27 posts · Started by Black Mamba · 20 Aug 2007
Post 2 by lockers,
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Post 3 by ban1216,
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Post 4 by Bodge,
#4My advice...
Don't bother stuffing with the airbox unless you 'really really' need more power. Cos then you'll either be replacing the airbox totally, making some fancy new lid or some other major mod that will take days of dyno testing to perfect to get any benefit.
Better off flowing the heads and adding a little more compression. Leave the airbox alone.
Heres what happens when you pull out the snorkel. Bike has a power commander and tuning was still perfect after removal, and yet.....
Don't bother stuffing with the airbox unless you 'really really' need more power. Cos then you'll either be replacing the airbox totally, making some fancy new lid or some other major mod that will take days of dyno testing to perfect to get any benefit.
Better off flowing the heads and adding a little more compression. Leave the airbox alone.
Heres what happens when you pull out the snorkel. Bike has a power commander and tuning was still perfect after removal, and yet.....
Post 5 by Plipton,
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Post 6 by lockers,
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Post 7 by lockers,
#7Looking at those dyno graphs it shows that the bike lost power with the snorkel out hence a bad idea to mess with it
somebody on here posted a link to a site recently that sells a reworked (new)airbox but it isnt cheap
somebody on here posted a link to a site recently that sells a reworked (new)airbox but it isnt cheap
Post 8 by Nickeluring,
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Post 9 by Plipton,
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Post 10 by Plipton,
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Post 11 by Nickeluring,
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Post 12 by Zenbiker,
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Post 13 by Gregz,
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Post 14 by Dr F,
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Post 15 by the-bunker,
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Post 16 by Dr F,
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Post 17 by Gregz,
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Post 18 by Gregz,
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Post 19 by Gregz,
#19Joe your right, alot of time effort and money goes into the design.
People are right to think they can change the performance though, the designers priority may have been different to yours hence the optimum may not be realised for your application. i.e max power at high rpm, vs max torque at low rpm, various noise regs, fuel consumption, smooth throttle response across the rev range.. all are factors each will be differently prioritised......
First question is are you using the system for an application other than that for which it was designed...if the answer is yes (i.e. with an altered state of tune) then a change may be reuired to achieve optimum performance, the next point is to establish what you want to achieve, more torque, more peak power... etc etc....
Then its time to start measurably modifying using base lines and measureables that directly reflect the preformance you are trying to change.... i.e torque, peak power, fuel consumption... etc etc.
Only down side to all of this is with developed sytems there are usually compromises to be made classically we don't create more power we usually move it around the reve range, or we reduce losses making more mower available..... again decsiion is to decie how you wanna use the bike abd what you are looking for...
Bloody good fun fiddling though, although sometimes expensive for less than expected gains, Captains PCIII application is a great example of this...
Happy modding...
People are right to think they can change the performance though, the designers priority may have been different to yours hence the optimum may not be realised for your application. i.e max power at high rpm, vs max torque at low rpm, various noise regs, fuel consumption, smooth throttle response across the rev range.. all are factors each will be differently prioritised......
First question is are you using the system for an application other than that for which it was designed...if the answer is yes (i.e. with an altered state of tune) then a change may be reuired to achieve optimum performance, the next point is to establish what you want to achieve, more torque, more peak power... etc etc....
Then its time to start measurably modifying using base lines and measureables that directly reflect the preformance you are trying to change.... i.e torque, peak power, fuel consumption... etc etc.
Only down side to all of this is with developed sytems there are usually compromises to be made classically we don't create more power we usually move it around the reve range, or we reduce losses making more mower available..... again decsiion is to decie how you wanna use the bike abd what you are looking for...
Bloody good fun fiddling though, although sometimes expensive for less than expected gains, Captains PCIII application is a great example of this...
Happy modding...
Post 20 by jjlester_74,
#20Here is my though on an airbox that would be tunable, have good performance and would be easy to make. It uses runners and a standard square airfilter. It will also increase the size of the airbox.
I believe the easiest construction method would be to buy a new lid and modify it. I have been reluctant to modify my lid so far - the snorkels are easier to work with.
I believe the easiest construction method would be to buy a new lid and modify it. I have been reluctant to modify my lid so far - the snorkels are easier to work with.
Post 21 by Black Mamba,
#21P I C T U R E S PLEASEEE...
without the tank of course!
without the tank of course!
Post 22 by Gregz,
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Post 23 by jjlester_74,
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Post 24 by jjlester_74,
#24Here is a translated link to Sommer Tuning on the LC8
I believe the lads at Sommer have done some really good work.
I believe the lads at Sommer have done some really good work.
Post 25 by Gregz,
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Post 26 by Joely Boy,
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Post 27 by Joely Boy,
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