active intake
Stellar HDF Member
Joined: Sep 2009
Posts: 2,114
Likes: 666
Unfortunately there isn't anything high performance as applied to HD intakes.
For HDI models they shut off the intake opening when the engine is off so all those fumes stay inside the engine.
Nothing sexy like dynamically altering the intake runner lengths for each cylinder individually...bummer
Bob
For HDI models they shut off the intake opening when the engine is off so all those fumes stay inside the engine.
Nothing sexy like dynamically altering the intake runner lengths for each cylinder individually...bummer
Bob
Banned
Joined: Jul 2010
Posts: 853
Likes: 19
From: Melbourne
If its Active Intake then its most likely the Hypercharger that uses engine vacum to operate a flap that lets air into the engine...its totally bogus and totally marketing hype.
There is however an Active Exhaust where there is a valve in the exhaust header that opens and closes to manage the backpressure in the system to improve performance and reduce emissions.
There is however an Active Exhaust where there is a valve in the exhaust header that opens and closes to manage the backpressure in the system to improve performance and reduce emissions.
Road Master
Joined: May 2012
Posts: 773
Likes: 124
From: Between purgatory and retirement
Try going here: ( you may have to pick language, country, and accept cookies)
https://serviceinfo.harley-davidson....t/view?id=8268
then click the eighth link along the left side of the page, ACTIVE INTAKE and EXAUST
You'll see what it looks like.
As FLTRI17 said, used in HDI models.
.
https://serviceinfo.harley-davidson....t/view?id=8268
then click the eighth link along the left side of the page, ACTIVE INTAKE and EXAUST
You'll see what it looks like.
As FLTRI17 said, used in HDI models.
.
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Road Captain
Joined: Feb 2010
Posts: 541
Likes: 36
Thanks guys I always know I can get good answers here. I know what active exhaust is and how it works but saw a confusing post on another site vaguly talking about active intakes.
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