AIr intake and exhaust need a computer flash
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Cruiser
Joined: Jul 2012
Posts: 126
Likes: 6
From: Clover SC
AIr intake and exhaust need a computer flash
I am wanting to put a set of COBRA slip-ons and an aftermarket air filter on my 2015. Is it necessary to re-flash the computer in order to see improvements in performance and MPG? A programmer is over $300!!! Does it make that much of a difference?
A lot of Forum folks just put on the slip-ons, and don't change the air filter at all, it will flow all the air a Stage-I needs.
Like anything with a factory tune, it's lean by nature, a tuner with an auto tune will get it there, +1 what hbsolder3 said.
John
Like anything with a factory tune, it's lean by nature, a tuner with an auto tune will get it there, +1 what hbsolder3 said.
John
Outstanding HDF Member
Joined: Aug 2016
Posts: 2,046
Likes: 314
From: Denver CO
As the others have said, yes, you will need to compensate for the added air flowing thru your system. If all you want is improved sound, slip on mufflers will run OK without a tuner, BUT, would benefit from one. Anything above that will make your motor run too lean. Keep in mind the manufacturers run engines lean to meet the EPA regulations. On my carberated bikes, living in Colorado, the high I went, the worse they ran with s strong smell of gas. They were too rich. On FI bikes, there is some compensation for this, but not enough to skip a tuner.
Grand HDF Member
Joined: Aug 2014
Posts: 4,726
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From: Toledo ohio
Also consider if this is the only modification to the intake and exhaust you will ever do, you should be good with a "flash". If you are like me and you might try different exhaust or intake, or even add cams later on, you might consider one like thundermax or Power vision or fuelpak with auto tune. So you don't have to keep flashing and flashing.
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