Hello,

I have a 2015 fat boy lo. I'm changing from a screamin' eagle high performance air cleaner to a K&N performance air intake system. I'm being told I will not need a dyno tune because I'll be going from performance air filter to another performance air filter. I have vance & hines big shots staggered with a master tune TTS. Should I get the bike re-tuned? Any opinions will be appreciated.

 

If you already had your tune modified for your current mods, I totally disagree that you need it tuned again.....

With just an exhaust change and air cleaner change over OEM configuration (OEM displacement, cams, compression, heads), your Screamin' Eagle air cleaner flows more air than your engine needs.... Therefore, adding another air cleaner whether it flows the same amount of air, or even more air, will NOT affect the airflow through your engine...

Of course, hopefully you have modified your tune when you originally changed the air cleaner & exhaust from the OEM components.... if you didn't do that, then a modification of your tune is preferable.... Whether you need a dyno tune for STAGE I mods, or just a good map from a reputable tuner is open for some debate.... A dyno tune, however, from a GOOD tuner, is always the best option..

Good luck with your decision...

 

no, you will be fine TTS mastertune isn't air cleaner specific

 

No re-tune will be necessary.