How far can I go without a tune?
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Outstanding HDF Member
Joined: Jun 2011
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From: Savage, MN
How far can I go without a tune?
Long stort short the local stealership wants WAY to much money to tune my bike after putting in cams. I have a stage one with the sepst and has been dyno tuned for the stage one. My question is I will be getting the cams installed next week and its about 20 miles from my home so I have to drive it home without being re-tuned and I am thinking I am going to have it tuned at Fairbault Harley which is about 40 miles away from me. So needless to say my question is will I be ok putting these miles on without a correct tune for the cam? i would guess it just may not run the best of its capabilites but should not hurt anything correct? Thanks
Extreme HDF Member
Joined: Sep 2006
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From: Vancouver B.C. Canada
40 miles? I don't see any problem. I have the TW-555 woodcam installed, rode it for more than 150miles with stock ecu, no problem and lots of power. Of course you will get the best out of it after a proper tune. My bike runs a lot smoother after my PV ecu reflash, I am still waiting for my next major performance mod and dyno tune it right.
Road Warrior
Joined: Apr 2010
Posts: 1,739
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From: Suffolk, England
Its more about timing that fueling with cams on newer bikes. You need to swap to a map on the SEPST that matches the cams you fitted. You aren't going to find a canned one for a SEPST unless they were SE cams.
Chances are it's not going to blow up on the ride home but I definitely would not consider running it like that for any length of time.
Chances are it's not going to blow up on the ride home but I definitely would not consider running it like that for any length of time.
Tourer
Joined: Jul 2012
Posts: 335
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From: Seattle (Alki)
The key is to move the throttle a lot. This makes the bike run richer. It's a trick for when you are at the wrong elevation on sleds. Any time you move the throttle off and on you get a little more fuel.
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Outstanding HDF Member
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From: Savage, MN
Perfect exactly the information I need and exact 
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Thread Starter
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Outstanding HDF Member
Joined: Jun 2011
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From: Savage, MN
So in all seriousness basically limit my travel before tune as much as possible, but the likely hood of it hurting anything if I stay say under 100 miles total before tune I should be just fine.