header pipe question
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Tourer
Joined: Aug 2006
Posts: 355
Likes: 62
From: Long Island NY
header pipe question
So i have 4" rineharts (i swapped out the baffles) on my bike, stage 1 air cleaner and the pro street tuner. i was going with either the VH header or if i can get the rinehart one (unless someone has a better suggestion) but the dealer is telling me a need a different tuner to do the fuel map, is this true?
tuner i have : https://www.harley-davidson.com/stor...ance-tuner-kit
Thank you
tuner i have : https://www.harley-davidson.com/stor...ance-tuner-kit
Thank you
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,641
Likes: 1,985
From: Cleveland Zoo
So i have 4" rineharts (i swapped out the baffles) on my bike, stage 1 air cleaner and the pro street tuner. i was going with either the VH header or if i can get the rinehart one (unless someone has a better suggestion) but the dealer is telling me a need a different tuner to do the fuel map, is this true?
tuner i have : https://www.harley-davidson.com/stor...ance-tuner-kit
Thank you
tuner i have : https://www.harley-davidson.com/stor...ance-tuner-kit
Thank you
HDF Community Team
Joined: Mar 2017
Posts: 7,821
Likes: 4,381
From: Texas
1) SEPST tuner only tunes to Screamin Eagle parts configurations, and 2) a catless header would lie outside EPA regulations (the SEPST tuner stays within EPA standards).
Side note in case you are unaware. Using a different tuner than the SEPST will void your factory warranty instantly. There are a lot of threads about this and I don't want to turn your thread into one of those threads - just want you to know.
Side note in case you are unaware. Using a different tuner than the SEPST will void your factory warranty instantly. There are a lot of threads about this and I don't want to turn your thread into one of those threads - just want you to know.
Last edited by BrandonSmith; May 27, 2020 at 10:14 PM.
Seasoned HDF Member
Joined: Apr 2014
Posts: 5,420
Likes: 2,484
From: Lititz Pa
I have used V&H power duels, and Rush power duels header pipes they both preformed about the same. I liked the V&H for the fit and finish so I would go with the V&H myself, don't know nothing about the pro street tuner, I have always used power commander
Seasoned HDF Member
Joined: Apr 2014
Posts: 5,420
Likes: 2,484
From: Lititz Pa
1) SEPST tuner only tunes to Screamin Eagle parts configurations, and 2) a catless header would lie outside EPA regulations (the SEPST tuner stays within EPA standards).
Side note in case you are unaware. Using a different tuner than the SEPST will void your factory warranty instantly. There are a lot of threads about this and I don't want to turn your thread into one of those threads - just want you to know.
Side note in case you are unaware. Using a different tuner than the SEPST will void your factory warranty instantly. There are a lot of threads about this and I don't want to turn your thread into one of those threads - just want you to know.
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HDF Community Team
Joined: Mar 2017
Posts: 7,821
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From: Texas
RE: warranty, yuuuup
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Intermediate
Joined: Apr 2020
Posts: 40
Likes: 8
From: Colorado Springs
It sounds like a ploy from the stealership to void out what you've got going on. I'd be interested to hear what they have to say... If the dealership tells you that you need a better tuner then why sell you the SEPST in the first place?
Road Master
Joined: Feb 2014
Posts: 804
Likes: 237
From: TN
The hd tuner will work on hd parts, meaning with catalytic converter in place. To my knowledge, there are no maps available for aftermarket parts. Additionally the hd tuner does not have the capability to tune outside epa parameters. That means it is limited in the ve tables, afr, and timing. The aftermarket tuners go way beyond the epa, which are needed to tune a bike without a cat. Technically you could tune a bike with a hd tuner and an aftermarket pipe on, but it wouldnt run that good, and you voided the warranty anyway so what is the point.