Trike Engine Modifications
Thread Starter
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Ultimate HDF Member
Joined: Nov 2005
Posts: 5,926
Likes: 138
From: NE Ohio
I thought it would be a pretty easy swap just wanted to confirm it with someone who had done it. I'm glad I can reuse the factory oil hoses.
Club Member
Joined: Sep 2009
Posts: 2,290
Likes: 2
255's
The 255 cams are not that aggressive and again should have been stock on the Harley if not for the EPA. I had already been told they would not help with the heat and topping out over those hills may not be much better. Bottom end would be good and they would not hurt the top end but not to expect much on the top end power.
I am hoping eliminating the cat will not produce that much of a drivability problem and keeping it stock until I remove it so I can see what is going on with the cat removed. The 4 wire heated, electrically self heating should not react that much to taking the heat off them because they don't need the exhaust heat to function as the old 19mm's do. I hate to confuse the issue with pipes and high volume AC right now. I want to see how the ECM reacts by just removing the cat and go from there.
I hear the new SEPST is replacing the SERT mostly because of it being more user friendly. I would like to stay away from the PC V, when and if they ever get it right for the 2010's because of Harley's policy of voiding a warranty with one of them on there. I was told as long as I used the SEST, or SERT I would still be under the umbrella.
I pulled the plugs on the 2010 Tri and the ceramic is redish brown, shows to be close on a good AFR mix. Someone said they thought they richened up the AFR because the cat would allow them to. Removing the Cat should not even require a tune but we will have to gut it to find out. I'm willing to risk it because there are plenty of ways out there to bring it back in if I get it out of kilter. The AFR may explain that Cat being so hot also, all that fuel burning in that cat could be contributing to that dull red glow after dark.
I am hoping eliminating the cat will not produce that much of a drivability problem and keeping it stock until I remove it so I can see what is going on with the cat removed. The 4 wire heated, electrically self heating should not react that much to taking the heat off them because they don't need the exhaust heat to function as the old 19mm's do. I hate to confuse the issue with pipes and high volume AC right now. I want to see how the ECM reacts by just removing the cat and go from there.
I hear the new SEPST is replacing the SERT mostly because of it being more user friendly. I would like to stay away from the PC V, when and if they ever get it right for the 2010's because of Harley's policy of voiding a warranty with one of them on there. I was told as long as I used the SEST, or SERT I would still be under the umbrella.
I pulled the plugs on the 2010 Tri and the ceramic is redish brown, shows to be close on a good AFR mix. Someone said they thought they richened up the AFR because the cat would allow them to. Removing the Cat should not even require a tune but we will have to gut it to find out. I'm willing to risk it because there are plenty of ways out there to bring it back in if I get it out of kilter. The AFR may explain that Cat being so hot also, all that fuel burning in that cat could be contributing to that dull red glow after dark.
Thread Starter
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Ultimate HDF Member
Joined: Nov 2005
Posts: 5,926
Likes: 138
From: NE Ohio
The 255 cams are not that aggressive and again should have been stock on the Harley if not for the EPA. I had already been told they would not help with the heat and topping out over those hills may not be much better. Bottom end would be good and they would not hurt the top end but not to expect much on the top end power.
I hear the new SEPST is replacing the SERT mostly because of it being more user friendly. I would like to stay away from the PC V, when and if they ever get it right for the 2010's because of Harley's policy of voiding a warranty with one of them on there. I was told as long as I used the SEST, or SERT I would still be under the umbrella.
I pulled the plugs on the 2010 Tri and the ceramic is redish brown, shows to be close on a good AFR mix. Someone said they thought they richened up the AFR because the cat would allow them to. Removing the Cat should not even require a tune but we will have to gut it to find out. I'm willing to risk it because there are plenty of ways out there to bring it back in if I get it out of kilter. The AFR may explain that Cat being so hot also, all that fuel burning in that cat could be contributing to that dull red glow after dark.
I hear the new SEPST is replacing the SERT mostly because of it being more user friendly. I would like to stay away from the PC V, when and if they ever get it right for the 2010's because of Harley's policy of voiding a warranty with one of them on there. I was told as long as I used the SEST, or SERT I would still be under the umbrella.
I pulled the plugs on the 2010 Tri and the ceramic is redish brown, shows to be close on a good AFR mix. Someone said they thought they richened up the AFR because the cat would allow them to. Removing the Cat should not even require a tune but we will have to gut it to find out. I'm willing to risk it because there are plenty of ways out there to bring it back in if I get it out of kilter. The AFR may explain that Cat being so hot also, all that fuel burning in that cat could be contributing to that dull red glow after dark.
I won't have any solid changes until this winter when I do the cams and see what I'm going to do about the head pipe. In the spring I'll hit the ground running and work on doing data runs on the road and getting the bugger tuned. Going to be fun because it looks like I'll get to do it times 2 because my dad is leaning towards 255 cams and a SEST so I'll have his to tune also.
Road Master
Joined: Jan 2005
Posts: 1,073
Likes: 3
From: san antonio, tx
i am putting her up on a dyno and having a customized map set up. should be pretty cool when everything is done.
.....i have a power commander.....
grimm
.....i have a power commander.....
grimm
Last edited by grimm; Oct 5, 2009 at 10:28 AM.
Thread Starter
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Ultimate HDF Member
Joined: Nov 2005
Posts: 5,926
Likes: 138
From: NE Ohio
You got lucky finding someone who can Dyno a trike.
Road Master
Joined: Jan 2005
Posts: 1,073
Likes: 3
From: san antonio, tx
yeah, i have the hook up with the hot rod shop where i take my chevelle. they have their dyno setup for trikes, too.
grimm
grimm
Club Member
Joined: Sep 2009
Posts: 2,290
Likes: 2
The 255 cams are not that aggressive and again should have been stock on the Harley if not for the EPA. I had already been told they would not help with the heat and topping out over those hills may not be much better. Bottom end would be good and they would not hurt the top end but not to expect much on the top end power.
I am hoping eliminating the cat will not produce that much of a drivability problem and keeping it stock until I remove it so I can see what is going on with the cat removed. The 4 wire heated, electrically self heating should not react that much to taking the heat off them because they don't need the exhaust heat to function as the old 19mm's do. I hate to confuse the issue with pipes and high volume AC right now. I want to see how the ECM reacts by just removing the cat and go from there.
I hear the new SEPST is replacing the SERT mostly because of it being more user friendly. I would like to stay away from the PC V, when and if they ever get it right for the 2010's because of Harley's policy of voiding a warranty with one of them on there. I was told as long as I used the SEST, or SERT I would still be under the umbrella.
I pulled the plugs on the 2010 Tri and the ceramic is redish brown, shows to be close on a good AFR mix. Someone said they thought they richened up the AFR because the cat would allow them to. Removing the Cat should not even require a tune but we will have to gut it to find out. I'm willing to risk it because there are plenty of ways out there to bring it back in if I get it out of kilter. The AFR may explain that Cat being so hot also, all that fuel burning in that cat could be contributing to that dull red glow after dark.
I am hoping eliminating the cat will not produce that much of a drivability problem and keeping it stock until I remove it so I can see what is going on with the cat removed. The 4 wire heated, electrically self heating should not react that much to taking the heat off them because they don't need the exhaust heat to function as the old 19mm's do. I hate to confuse the issue with pipes and high volume AC right now. I want to see how the ECM reacts by just removing the cat and go from there.
I hear the new SEPST is replacing the SERT mostly because of it being more user friendly. I would like to stay away from the PC V, when and if they ever get it right for the 2010's because of Harley's policy of voiding a warranty with one of them on there. I was told as long as I used the SEST, or SERT I would still be under the umbrella.
I pulled the plugs on the 2010 Tri and the ceramic is redish brown, shows to be close on a good AFR mix. Someone said they thought they richened up the AFR because the cat would allow them to. Removing the Cat should not even require a tune but we will have to gut it to find out. I'm willing to risk it because there are plenty of ways out there to bring it back in if I get it out of kilter. The AFR may explain that Cat being so hot also, all that fuel burning in that cat could be contributing to that dull red glow after dark.
Still have not done anything about the Cat yet and waiting on some info for the the best Map/Tune and hoping to get some more riding in before I tear into it!
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Thread Starter
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Ultimate HDF Member
Joined: Nov 2005
Posts: 5,926
Likes: 138
From: NE Ohio
Most that I've seen have been happy with theirs. Your tuner shouldn't fret about the PCV putting him out of business. Just putting a PCV on doesn't quite complete things. You have to consider there are tweaks such as timing to be made. If you bolt it on a leave it as is your just settling for 50% of the results that you can achieve.
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Ultimate HDF Member
Joined: Nov 2005
Posts: 5,926
Likes: 138
From: NE Ohio
Can't figure it out? I pulled the plugs after some owners had some stripped some spark plugs to put some anti seeze on them and now they are chalk white. I had been just doing short trips and had around 500 on the trike when they were reddish brown. Now with around 1200 and after about an hour ride they are more of a chalky white. The Trike actually runs better and acts like it is about broke in. The o2 sensor's was also had chalky white tips. The trike has always run decent except for being underpowered, mostly top end. Same gas, same octane and no mods to muffler or air filter yet.
Still have not done anything about the Cat yet and waiting on some info for the the best Map/Tune and hoping to get some more riding in before I tear into it!
Still have not done anything about the Cat yet and waiting on some info for the the best Map/Tune and hoping to get some more riding in before I tear into it!