Rear pipe glowing red
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Intermediate
Joined: May 2006
Posts: 44
Likes: 0
From: S.E. Wisconsin
Rear pipe glowing red
Hey guys
I'm posting this for two of my friends. They both but o6 roadkings and the dealer did free big bores to make room for 07's. Stock cams and heads with S\E slip ons. Both of them noticed that at night when they were riding the rear pipe was glowing red at the head. So they called the dealer who said harleys down load is to lean and the only fix is a dfo or pcIII. They did make sure that their bikes had the updated injectors. Any ideas would be great.
Thanks Rick
I'm posting this for two of my friends. They both but o6 roadkings and the dealer did free big bores to make room for 07's. Stock cams and heads with S\E slip ons. Both of them noticed that at night when they were riding the rear pipe was glowing red at the head. So they called the dealer who said harleys down load is to lean and the only fix is a dfo or pcIII. They did make sure that their bikes had the updated injectors. Any ideas would be great.
Thanks Rick
Elite HDF Member
Joined: Feb 2006
Posts: 3,515
Likes: 6
From:
RE: Rear pipe glowing red
Sounds like they already have the answer, the dealer download is all they can do, unless you go with harleys race tuner which is basicly a PCIII that they tune to your bike using a dyno or just trail ans error riding. Or the best solution would be to go to the PCIII and then have it maped at a dynojet tuner.
Road Captain
Joined: Nov 2005
Posts: 711
Likes: 0
From: Bothell, WA
RE: Rear pipe glowing red
I would check to see what ECM download was installed on the bike. I suspect that the "street legal" was applied when the dealer should have installed the "race only" cartridge (required with SEII muffs). I had a similar problem myself. When I purchased my '06 FLSTCI, there was no "race" cartridge available, only the "street legal" download. To compensate, the dealer used the 1550 stage 1 download instead of the 1450 stage 1 download. When I had the 25 degree injectors installed (by a different dealer), I insisted that the 1450 stage 1 "race" cartridge be installed. Bike runs much smoother and much cooler.
Next purchase is the SERT and dynotune!
Next purchase is the SERT and dynotune!
Elite HDF Member
Joined: Feb 2006
Posts: 3,515
Likes: 6
From:
RE: Rear pipe glowing red
ORIGINAL: Geoseismic
I would check to see what ECM download was installed on the bike. I suspect that the "street legal" was applied when the dealer should have installed the "race only" cartridge (required with SEII muffs). I had a similar problem myself. When I purchased my '06 FLSTCI, there was no "race" cartridge available, only the "street legal" download. To compensate, the dealer used the 1550 stage 1 download instead of the 1450 stage 1 download. When I had the 25 degree injectors installed (by a different dealer), I insisted that the 1450 stage 1 "race" cartridge be installed. Bike runs much smoother and much cooler.
Next purchase is the SERT and dynotune!
I would check to see what ECM download was installed on the bike. I suspect that the "street legal" was applied when the dealer should have installed the "race only" cartridge (required with SEII muffs). I had a similar problem myself. When I purchased my '06 FLSTCI, there was no "race" cartridge available, only the "street legal" download. To compensate, the dealer used the 1550 stage 1 download instead of the 1450 stage 1 download. When I had the 25 degree injectors installed (by a different dealer), I insisted that the 1450 stage 1 "race" cartridge be installed. Bike runs much smoother and much cooler.
Next purchase is the SERT and dynotune!
Cruiser
Joined: Aug 2006
Posts: 172
Likes: 0
From:
RE: Rear pipe glowing red
New to the EFI Harley circles, but not new to big HP tuning
High EGT and glowing pipes are almost always due to late ignition timing (yes extreme lean and rich can both raise EGT, but to get the pipe glowing, it usually takes a late firing plug)
I am playing catch up learning about the different tuners, but it sounds to me like a combination of too much fuel and too late of timing. Needless to say, there is some HP left on the table to boot
High EGT and glowing pipes are almost always due to late ignition timing (yes extreme lean and rich can both raise EGT, but to get the pipe glowing, it usually takes a late firing plug)
I am playing catch up learning about the different tuners, but it sounds to me like a combination of too much fuel and too late of timing. Needless to say, there is some HP left on the table to boot
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Tourer
Joined: Jan 2006
Posts: 345
Likes: 0
From: Mt. Holly, NC
RE: Rear pipe glowing red
Could be but based on the 06's running right at lean from the factory and doing the mods, I would go with too lean. Need a fuel manager and a good map. That will fix it, plus you will squeeze out some more HP and Torque.
Yoman
Yoman
ORIGINAL: My427stang
New to the EFI Harley circles, but not new to big HP tuning
High EGT and glowing pipes are almost always due to late ignition timing (yes extreme lean and rich can both raise EGT, but to get the pipe glowing, it usually takes a late firing plug)
I am playing catch up learning about the different tuners, but it sounds to me like a combination of too much fuel and too late of timing. Needless to say, there is some HP left on the table to boot
New to the EFI Harley circles, but not new to big HP tuning
High EGT and glowing pipes are almost always due to late ignition timing (yes extreme lean and rich can both raise EGT, but to get the pipe glowing, it usually takes a late firing plug)
I am playing catch up learning about the different tuners, but it sounds to me like a combination of too much fuel and too late of timing. Needless to say, there is some HP left on the table to boot
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Cruiser
Joined: Aug 2006
Posts: 172
Likes: 0
From:
RE: Rear pipe glowing red
I wont argue, but from the 8 cyl world, late timing is the pipe cooker, you can melt a ceramic coated header before you blink.
I hear ya on the lean issue, but if there was a way to verify individual cylinder timing, I'd bet good money that back cyl was late
I hear ya on the lean issue, but if there was a way to verify individual cylinder timing, I'd bet good money that back cyl was late