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Can the SE Sportster Street Ignition Module

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Old Dec 26, 2006 | 02:59 PM
  #1  
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Default Can the SE Sportster Street Ignition Module

When I ordered my stage 1 parts, the order included 31784-04A SE Ignition Module.

I was talking to a guy at work who said that this module could actually hurt my engine. Is this true ?


 
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Old Dec 26, 2006 | 03:55 PM
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Default RE: Can the SE Sportster Street Ignition Module

I read something a while back on xl forums about the se module wouldn't work properly unless you put cams in. you would have to do a search out there to find out what you need to do. I was going to buy one way back when, but didn't because what they said you had to do. but that was a while ago can don't remember exactly.
 
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Old Dec 26, 2006 | 04:15 PM
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Default RE: Can the SE Sportster Street Ignition Module

I looked at getting one a while back. I never heard anything like that. I just recall there was this one that retarded timing at WOT and then there was a similar model that simply raised the rev limit. Neither case do I recall ever seeing anything about damage resulting from using this on a stock motor. On the contrary, I do recall seeing people posting here that this module was one of their mods done with their Stage I's on stock cams.

Sure you can break stuff revving up to 7000. But that's a function of the RPM's and not the module. The module is only facilitating the RPM's.

My answer is no - the module cannot directly cause damage to your engine on its own.
 
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Old Dec 26, 2006 | 04:50 PM
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Default RE: Can the SE Sportster Street Ignition Module


Yeah thats why I included it ... actually the ignition module and the SE coil (which I forgot to order) was on the parts list. I believe I got the list off of the xlforum. Ill double check.

But why the hell would I be running at 7k rpms anyway. Im an old guy who doesnt race around town and have never had the bike over 80mph ... plenty more throttle .. I may occasionally stay in the low end gears a bit longer then I should based on road condition or traffic, but I doubt that I let it rev to 7k rpms. ... I dont have a tach to tell exactly ..... but again ... 7k is awfully high ...

 
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Old Dec 26, 2006 | 05:00 PM
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Default RE: Can the SE Sportster Street Ignition Module

ORIGINAL: sumncguy


Yeah thats why I included it ... actually the ignition module and the SE coil (which I forgot to order) was on the parts list. I believe I got the list off of the xlforum. Ill double check.

But why the hell would I be running at 7k rpms anyway. Im an old guy who doesnt race around town and have never had the bike over 80mph ... plenty more throttle .. I may occasionally stay in the low end gears a bit longer then I should based on road condition or traffic, but I doubt that I let it rev to 7k rpms. ... I dont have a tach to tell exactly ..... but again ... 7k is awfully high ...

With the stock cams your peak horsepower curve is falling before you even reach 6,000 RPM.

Even the SE "E" cams I am running the peak horsepower curve is falling (not rising or even staying the same) in the 6,300 RPM range.

Doesn't do a bit of good to run the engine at a higher RPM range unless it's just for bragging rights.

If you want to run at a high RPM range and actually see some benefits you need to modify your engine and install cams/etc that are actually making power at high RPM's.



 
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Old Dec 26, 2006 | 05:16 PM
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Default RE: Can the SE Sportster Street Ignition Module

He goes the list I got from Sportster.org

Stage 0: Stock

HP=40 for 883, 50 for 1200 (average) [hr] Stage .5 (also known as "The Harley Tax"): Stock plus:
SE Air Cleaner(1)
SE Slip-On Mufflers or equivalent(2)
Rejetting (DynoJet, Yost or just jets)(3)

HP=50 for 883, 60 for factory 1200(4)[hr] Stage 1: Stage.5 plus
883/1200 Conversion for 883s(5,6,7,8)
SE Ignition Module or adjustable one(9)

HP=60 for 883/1200, 65 for factory 1200
Im not the kind of guy that goes for the "bragging rights" thing. The ONLY reason I am doing this is because the stealer cant or dont want to tune out the farting issue. Its an annoyance and at times dangerous.
So if Im reading this right, I shouldnt be replacing the ignition module unless eventually I want to also do the cams; which is not the case. How about the coil ?

Thanks for the help guys ...


 
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Old Dec 26, 2006 | 08:58 PM
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Default RE: Can the SE Sportster Street Ignition Module

ORIGINAL: sumncguy

He goes the list I got from Sportster.org

Stage 0: Stock

HP=40 for 883, 50 for 1200 (average)
[hr]
Stage .5 (also known as "The Harley Tax"): Stock plus:
SE Air Cleaner(1)
SE Slip-On Mufflers or equivalent(2)
Rejetting (DynoJet, Yost or just jets)(3)

HP=50 for 883, 60 for factory 1200(4)
[hr]
Stage 1: Stage.5 plus
883/1200 Conversion for 883s(5,6,7,8)
SE Ignition Module or adjustable one(9)

HP=60 for 883/1200, 65 for factory 1200
Im not the kind of guy that goes for the "bragging rights" thing. The ONLY reason I am doing this is because the stealer cant or dont want to tune out the farting issue. Its an annoyance and at times dangerous.
So if Im reading this right, I shouldnt be replacing the ignition module unless eventually I want to also do the cams; which is not the case. How about the coil ?

Thanks for the help guys ...


Those figures sound very low to me, and if they are taken from the Sportster.Org "Harley Tax Article" by L. Riggins it was written in 1998.

The 2004+ Sportsters, especially the 1200's with the upgraded Buell XB line heads, 1200 Sport cams, and lighter pistons and rods, produce higher horsepower figures than the pre-2004 stock 1200's.

Most "Stage 1" 2004 and newer bike show rear wheel figures of around 70 - 75 horsepower with nothing more than exhaust, intake, and carb work. I've seen some figures that have been higher.

 
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Old Dec 26, 2006 | 11:15 PM
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Default RE: Can the SE Sportster Street Ignition Module

All that module does is raise the rev limit, it does nothing to the advance curve. Save your money.
SCREAMIN’ EAGLE
ÂŽ STREET LEGAL
IGNITION SYSTEM
This module is 50-state street legal, and is programmed to
allow the engine to turn 7000 RPM while maintaining stock
ignition curves at lower engine speed.
31784-04A
Fits ’04-’06 XL883/C models. $119.95
 
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Old Dec 27, 2006 | 01:08 AM
  #9  
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Default RE: Can the SE Sportster Street Ignition Module

ORIGINAL: murphdog
All that module does is raise the rev limit, it does nothing to the advance curve. Save your money.
[align=left]SCREAMIN’ EAGLE® STREET LEGAL[/align][align=left]IGNITION SYSTEM[/align][align=left]This module is 50-state street legal, and is programmed to[/align][align=left]allow the engine to turn 7000 RPM while maintaining stock[/align][align=left]ignition curves at lower engine speed.[/align][align=left]31784-04A Fits ’04-’06 XL883/C models. $119.95[/align]
You are correct, the street legal version (31784-04A) rasies the rev limit but does nothing to the advance curve. If you want the one that gives you 7000 rpm and retards timing by 5 degrees at WOT, its SCREAMIN’ EAGLE® PRO PERFORMANCE INGNITION SYSTEM, PART NO: 31758-04A (883 models), or 31759-04A (1200's). They are also $119.95. Re: page 64 of 2006 SE parts catalog, lower left hand corner of the page.

I agree with Old Fender Guy and sumncguy. I found there is little use for it in a street use configuration. I'm running stock cams and stock ignition and 90% of the time I run out of road or hit max speed for conditions before I get to 5500 RPMs. These bikes are fast enough without it. But the info is here just the same.

Hope it helps.
 
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Old Dec 27, 2006 | 02:23 PM
  #10  
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Default RE: Can the SE Sportster Street Ignition Module


Cool ... I was able to cancel the order for the ignition module. I also checked on the Jireh order for Cycle Shack slip ons. I received an emailed invoice, but they didnt mention that they were on back order. I checked out Dennis Kirk they where listed at ~168 + shipping and in stock. I gave them a call and made mention of the Jireh price of $120 including shipping and they beat that price by a buck. They should be here by Friday. Now I need to find some one decent to do the carb rejet and dyno tune.

Any suggestions Mid NC ??

Thanks for all the help guys !!!
 
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