Rush pipes, loss tq., SERT?
#1
02-26-2007, 10:52 PM
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Rush pipes, loss tq., SERT?
I have an '05' Road King Custom with 5000 miles on it. I purchased the bike with 2000 miles and it already had a screaming eagle air filter and screaming eagle pipes (a basic Stage I). I have no idea if it had been re-mapped in the process but I have kept a close watch on the plugs. They are good, maybe a tad on the lean side if not perfect.
I didn't like the sound of the pipes so I just purchased a set of Rush, 2" baffled slip on's from the HD stealer. The sound is about what I'm looking for but the problem is I've lost a noticable amount of torque. Especially when I'm running about 60 mph and need to give it some throttle to merge onto the freeway. Even if I downshift to 4th, I have no power.
My question is the obvious. Can I purchase a SERT and get back to the original power level and if so, do I need to have the SERT installed and also dyno tuned? Or can I get the proper mapping procedures(from my good friends on this incredible website)and do the install myself?
My HD stealer is highly promoting the SERT with a 4 hour dyno tuning install for $820 and this sounds a little excessive to me.
Any help and suggestions are appreciated. I know very little about the EFI system.
Thanks,
Ray
I didn't like the sound of the pipes so I just purchased a set of Rush, 2" baffled slip on's from the HD stealer. The sound is about what I'm looking for but the problem is I've lost a noticable amount of torque. Especially when I'm running about 60 mph and need to give it some throttle to merge onto the freeway. Even if I downshift to 4th, I have no power.
My question is the obvious. Can I purchase a SERT and get back to the original power level and if so, do I need to have the SERT installed and also dyno tuned? Or can I get the proper mapping procedures(from my good friends on this incredible website)and do the install myself?
My HD stealer is highly promoting the SERT with a 4 hour dyno tuning install for $820 and this sounds a little excessive to me.
Any help and suggestions are appreciated. I know very little about the EFI system.
Thanks,
Ray
#2
02-27-2007, 12:11 AM
RE: Rush pipes, loss tq., SERT?
to remap the ECU, you have to have the SERT to do it. Once you get it, you can choose from some of the canned maps, borrow one from some of the great people on this forum. I loaded a canned map which came closest with the HD part listings on the canned maps, to the actual aftermarket parts i had on the bike. I was still running a bit lean. I probably could have played with the settings in the SERT and adjusted the map. I chose to have it dyno'd and they built a custom map.
Again, you need the SERT, to install or adjust the ECU via a modified map.
[IMG]local://upfiles/12616/A0BD6447FD0C4035A13A91D65596B5BC.jpg[/IMG]
[IMG]local://upfiles/12616/3303A9EEB28A4E5E91D9CF0814DC6FAA.jpg[/IMG]
Again, you need the SERT, to install or adjust the ECU via a modified map.
[IMG]local://upfiles/12616/A0BD6447FD0C4035A13A91D65596B5BC.jpg[/IMG]
[IMG]local://upfiles/12616/3303A9EEB28A4E5E91D9CF0814DC6FAA.jpg[/IMG]
#3
02-27-2007, 09:23 AM
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RE: Rush pipes, loss tq., SERT?
With the SERT and dyno tuning, can they get the performance level back to where it was before changing the pipes? I have a clear understanding of torque, speed and HP and I just don't see how they can get this performance level back by doing this but the HD dealer says he can.
#4
02-27-2007, 09:40 AM
RE: Rush pipes, loss tq., SERT?
ORIGINAL: raym
I have an '05' Road King Custom with 5000 miles on it. I purchased the bike with 2000 miles and it already had a screaming eagle air filter and screaming eagle pipes (a basic Stage I). I have no idea if it had been re-mapped in the process but I have kept a close watch on the plugs. They are good, maybe a tad on the lean side if not perfect.
I didn't like the sound of the pipes so I just purchased a set of Rush, 2" baffled slip on's from the HD stealer. The sound is about what I'm looking for but the problem is I've lost a noticable amount of torque. Especially when I'm running about 60 mph and need to give it some throttle to merge onto the freeway. Even if I downshift to 4th, I have no power.
My question is the obvious. Can I purchase a SERT and get back to the original power level and if so, do I need to have the SERT installed and also dyno tuned? Or can I get the proper mapping procedures(from my good friends on this incredible website)and do the install myself?
My HD stealer is highly promoting the SERT with a 4 hour dyno tuning install for $820 and this sounds a little excessive to me.
Any help and suggestions are appreciated. I know very little about the EFI system.
Thanks,
Ray
I have an '05' Road King Custom with 5000 miles on it. I purchased the bike with 2000 miles and it already had a screaming eagle air filter and screaming eagle pipes (a basic Stage I). I have no idea if it had been re-mapped in the process but I have kept a close watch on the plugs. They are good, maybe a tad on the lean side if not perfect.
I didn't like the sound of the pipes so I just purchased a set of Rush, 2" baffled slip on's from the HD stealer. The sound is about what I'm looking for but the problem is I've lost a noticable amount of torque. Especially when I'm running about 60 mph and need to give it some throttle to merge onto the freeway. Even if I downshift to 4th, I have no power.
My question is the obvious. Can I purchase a SERT and get back to the original power level and if so, do I need to have the SERT installed and also dyno tuned? Or can I get the proper mapping procedures(from my good friends on this incredible website)and do the install myself?
My HD stealer is highly promoting the SERT with a 4 hour dyno tuning install for $820 and this sounds a little excessive to me.
Any help and suggestions are appreciated. I know very little about the EFI system.
Thanks,
Ray
The VE, AFR and tuning requirements constantly vary as determined by the mechanical and dynamic properties of the motor. The main mechanical parts are typically engine size (volume), compression ratio/cylinder pressure (static, corrected and dynamic), cam timing/lift, port/valve flow capacity (cfm, including the induction system), exhaust and NOS/super/turbo charging.
The exhaust system is the largest, single, variable influence on how the motor processes air, the shape of the VE graph and tuning requirements. The dynamic parts are typically RPM, throttle position and load (including wind, tire pressure, terrain, gearing and luggage).
Ignition requirements are dictated by engine design properties such as exhaust (how much heat is retained), cam profiles, piston/combustion chamber shape, piston/head clearance (quench/squish), cylinder pressures, rpm limits, fuel quality and intended use.
On carbureted motorcycles to adjust air/fuel ratios we use Dynojet recalibration kits. To install we remove the carburetors to gain access to and replace pilot jets, main jets, emulsion tubes, needles and make float height adjustments.
This procedure can require removing and replacing the carburetors many times until the correct ratios are accomplished. A dyno tune is the most efficient and accurate method.
Fuel Injected Motorcycles have throttle bodies and fuel injectors driven by the ECU (engine control unit) and its programming or calibration. Input from a variety on sensors allows more accurate control as engine demands change and offsets to account for environment changes.
Race tuner
[size=1]The Screaming Eagle Race Tuner allows direct access to the ECU programs and their modification. We are, in affect, creating custom calibrations for specific combinations (just like H-D re flash cartridges). The Race Tuner does, however include many SE calibrations in the map files to select from. These
#5
02-28-2007, 10:59 PM
RE: Rush pipes, loss tq., SERT?
ORIGINAL: raym
I have an '05' Road King Custom with 5000 miles on it. I purchased the bike with 2000 miles and it already had a screaming eagle air filter and screaming eagle pipes (a basic Stage I). I have no idea if it had been re-mapped in the process but I have kept a close watch on the plugs. They are good, maybe a tad on the lean side if not perfect.
I didn't like the sound of the pipes so I just purchased a set of Rush, 2" baffled slip on's from the HD stealer. The sound is about what I'm looking for but the problem is I've lost a noticable amount of torque. Especially when I'm running about 60 mph and need to give it some throttle to merge onto the freeway. Even if I downshift to 4th, I have no power.
My question is the obvious. Can I purchase a SERT and get back to the original power level and if so, do I need to have the SERT installed and also dyno tuned? Or can I get the proper mapping procedures(from my good friends on this incredible website)and do the install myself?
My HD stealer is highly promoting the SERT with a 4 hour dyno tuning install for $820 and this sounds a little excessive to me.
Any help and suggestions are appreciated. I know very little about the EFI system.
Thanks,
Ray
I have an '05' Road King Custom with 5000 miles on it. I purchased the bike with 2000 miles and it already had a screaming eagle air filter and screaming eagle pipes (a basic Stage I). I have no idea if it had been re-mapped in the process but I have kept a close watch on the plugs. They are good, maybe a tad on the lean side if not perfect.
I didn't like the sound of the pipes so I just purchased a set of Rush, 2" baffled slip on's from the HD stealer. The sound is about what I'm looking for but the problem is I've lost a noticable amount of torque. Especially when I'm running about 60 mph and need to give it some throttle to merge onto the freeway. Even if I downshift to 4th, I have no power.
My question is the obvious. Can I purchase a SERT and get back to the original power level and if so, do I need to have the SERT installed and also dyno tuned? Or can I get the proper mapping procedures(from my good friends on this incredible website)and do the install myself?
My HD stealer is highly promoting the SERT with a 4 hour dyno tuning install for $820 and this sounds a little excessive to me.
Any help and suggestions are appreciated. I know very little about the EFI system.
Thanks,
Ray
I'm totally ignorant of the SERT and all that stuff, but I would be very skeptical that you can overcome pipe design characteristics by fiddling with the mixture. It's hard to fight the laws of nature. I would think the dealer would be hard pressed to satisfy me in this case with a cost of more than $800 on top of the money I already paid for the mufflers.If I loved the mufflers I would just downshift and wind her out more.
#6
02-28-2007, 11:19 PM
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RE: Rush pipes, loss tq., SERT?
Get the sert and dyno.... you'll end up with more tq & hp than before. You'll be able to "fine tune" your bike and rest assure that everything is set properly. Thus increasing the life of the motor while being able to enjoy the sound and power. Just ask Geargrinder... he's a tuner!
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