Cam without slips.......
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Road Captain
Joined: Mar 2006
Posts: 555
Likes: 93
From:
Cam without slips.......
Riding my 2017 SGS, I am impressed with the performance, BUT, I can see where it does fall on its face at about 3500-4000 rpms. It seems to me that the stock exhaust can likely flow a good bit more air than it does, as the exhaust coming out of the left side is REALLY weak. I am OK with the sound of the stock exhaust, and really don't want to get much (if any) louder......
I am thinking of installing the K&N 1717 air cleaner element that fits in the stock housing, a Screaming Chicken street tuner, and having the dealer install the Stage 2 torque cam, keeping the stock mufflers. It seems to me that this would give me the best of both worlds, because I am thinking that the fall on your face of the stock motor is primarily the cam with a little restricted air cleaner thrown in. Anyone ever done this before (I'm sure someone has), and what were the results????
I might add that preservation of the warranty is important
TIA
Lon
I am thinking of installing the K&N 1717 air cleaner element that fits in the stock housing, a Screaming Chicken street tuner, and having the dealer install the Stage 2 torque cam, keeping the stock mufflers. It seems to me that this would give me the best of both worlds, because I am thinking that the fall on your face of the stock motor is primarily the cam with a little restricted air cleaner thrown in. Anyone ever done this before (I'm sure someone has), and what were the results????
I might add that preservation of the warranty is important
TIA
Lon
Intermediate
Joined: Jan 2012
Posts: 38
Likes: 7
From: Madison, AL
You are correct, falling off in the upper RPM range is the cam. Now I can't speak for going through the stock exhaust as I have full exhaust on mine but I can speak for that cam. It really wakes the bike up and pulls strong all the way through the RPMs. Sure, you will lose a little going through the stock exhaust but you're still going to have plenty of gains. I think you'll be more than pleased.
Road Warrior
Joined: Jul 2009
Posts: 1,408
Likes: 1,808
From: pa
I did the stage 2 tq with cannons and ventilator ,street tuner. Much better holding torque out longer. Not really much difference right off idle but its an nice improvement overall. I think with a decatted header might pick the hp up some but won't do much on the tq end
HD EFI Guru
Joined: Jan 2008
Posts: 4,490
Likes: 4,776
Riding my 2017 SGS, I am impressed with the performance, BUT, I can see where it does fall on its face at about 3500-4000 rpms. It seems to me that the stock exhaust can likely flow a good bit more air than it does, as the exhaust coming out of the left side is REALLY weak. I am OK with the sound of the stock exhaust, and really don't want to get much (if any) louder......
I am thinking of installing the K&N 1717 air cleaner element that fits in the stock housing, a Screaming Chicken street tuner, and having the dealer install the Stage 2 torque cam, keeping the stock mufflers. It seems to me that this would give me the best of both worlds, because I am thinking that the fall on your face of the stock motor is primarily the cam with a little restricted air cleaner thrown in. Anyone ever done this before (I'm sure someone has), and what were the results????
I might add that preservation of the warranty is important
TIA
Lon
I am thinking of installing the K&N 1717 air cleaner element that fits in the stock housing, a Screaming Chicken street tuner, and having the dealer install the Stage 2 torque cam, keeping the stock mufflers. It seems to me that this would give me the best of both worlds, because I am thinking that the fall on your face of the stock motor is primarily the cam with a little restricted air cleaner thrown in. Anyone ever done this before (I'm sure someone has), and what were the results????
I might add that preservation of the warranty is important
TIA
Lon
Tourer
Joined: Jun 2017
Posts: 494
Likes: 220
From: Qld, Australia
Dynoing my King shed some light on the performance restrictions stock......the power curve flattens out by 4.5 thou rpm because the stock air filter just can't supply any more air to the motor. So changing to a high flow filter is good bang for the buck, just make sure it's tuned once this change is made to account for lean condition.
As for doing the cam without any other changes - it'll work but you'd get better numbers doing the lot. But do pay for a dyno tune. It's worth ever penny.
As for doing the cam without any other changes - it'll work but you'd get better numbers doing the lot. But do pay for a dyno tune. It's worth ever penny.
Last edited by Oz Dan; Jun 16, 2017 at 05:02 PM.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,925
Likes: 8,027
From: poway
I did a stage 2 tq cam with SE AC that fits under the stock covers and and the stock mufflers.. Runs just fine. Revs carry out much further than the stock cam and it's nice and quiet. It will stay this way until the warranty runs out.. By then all of the aftermarket cams and exhausts should be sorted out..
Road Master
Joined: Feb 2014
Posts: 1,240
Likes: 170
From: Wisconsin
I did stage 2 torque cam and hi flow a/c,street tuner and Street cannons until left baffle came loose.Went back to stock exhaust and I see no difference in performance.Just quiet and I like it.
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Road Warrior
Joined: Sep 2016
Posts: 1,395
Likes: 364
From: Okmulgee
The HD TQ cam is a nice adder. Does not add big numbers. Just kind of makes the bike feel like it should of OTD new. The stock slips will hold it back just a tad. The OEM mufflers induce a fair amount of back pressure to help keep it quite and the cat working at peak heat for those massive uncomfortable moments in traffic.
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Cruiser
Joined: Apr 2013
Posts: 203
Likes: 36
From: Eastern PA
Remember that you must do this within 60 days of taking delivery of a new bike. After that, the same parts are NOT covered under the factory warranty. So if your already past the 60 day mark all bets are off, when it comes to warranty. Now your local dealer may cover you but that would be on them, not HD.
Last edited by GFVIII; Jun 16, 2017 at 07:49 PM.
Cruiser
Joined: Apr 2013
Posts: 203
Likes: 36
From: Eastern PA
Remember that you must do this within 60 days of taking delivery of a new bike. After that, the same parts are NOT covered under the factory warranty. So if your already past the 60 day mark all bets are off, when it comes to warranty. Now your local dealer may cover you but that would be on them, not HD.