Fuel injection advantage.......
Tourer
Joined: Jul 2009
Posts: 481
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From: Minnesota
(EFI vs Carb'd debate)My bike doesn't pop, cough, or backfire while idling during warm up, and I can take off right after a cold start & find my choke sliding back in on it's own just a few miles down the road. It all depends on how each bike is set up. No, EFI does not eliminate the cold blooded nature of the engine.....As a matter of fact I hear a LOT of you EFI guys saying that your scoots stumble and/or die during warm up. All I can say is my carb'd sporty doesn't do that & I'll stick with my carb. Done with my
ing.The EFI bikes are not supposed to have this problem and it is the software that is too loosley written to handle the situations encountered by many of the Sportys out there.
Mine was one of the bikes that had the cold start stumble. MOCO took a new ECM, adjusted the "warm up" mode with a SERT, overnighted it to my dealer and the bike was fixed. Not supposed to have any warm up problems.
Most stealers would tell you that it is a Sportster thing because they don't know what else to tell you. The first thing MOCO told my dealer to do was pull the jugs and rering it. Apparently the compression was not right on. That didn't fix the problem, then they changed every other component in the EFI system, that didn't fix anything, finally MOCO got a clue and realized it was the software.
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From: Wheeling, WV
Last edited by WVHogRider; Nov 6, 2009 at 01:57 PM.
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From: Landrum, SC , elevation 986'
Tourer
Joined: Jul 2009
Posts: 481
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From: Minnesota
[quote=WVHogRider;5820532][quote=Blackcherry Low;5820261]I disagree with your statement about cold start stuttering.
The EFI bikes are not supposed to have this problem and it is the software that is too loosley written to handle the situations encountered by many of the Sportys out there.
Yeah, I hear ya, if you're talking about performance I'm sure it's way less expensive to tune for with a carb, but I guess I was just referring to the cold start stumble that many of the 1200s are plagued with. Many of them didn't have the problem but mine did and I knew that something was not right, when you have a computer controlling the fuel delivery this should not happen.
Anyway I got it fixed for free under warranty and I got to keep the SERT to boot. Guess it paid off to be persistent with HD. As far as performance goes, my bike is still basically stock and has no glitches in performance. It performs like a stock motor is expected to.
The EFI bikes are not supposed to have this problem and it is the software that is too loosley written to handle the situations encountered by many of the Sportys out there.
Well, actually, you're agreeing with me because I stated " However, I do agree with some of you guys on the EFI can be a simple plug & play set with downloads.......but a tuned carb works just the same for a LOT less $$$$.".....which I was trying to say that a properly tuned engine, whether EFI or Carb'd, should not stumble/act cold blooded. You altered the ECM & got your bike tuned to run properly. A properly tuned sporty is a properly tuned Sporty whether it's Carb'd or EFI.....I'm just not going to shell out several hundred bucks for some computer download when I can pay like $5 for a new jet to tune a carb.
Anyway I got it fixed for free under warranty and I got to keep the SERT to boot. Guess it paid off to be persistent with HD. As far as performance goes, my bike is still basically stock and has no glitches in performance. It performs like a stock motor is expected to.
Elite HDF Member
Joined: May 2009
Posts: 4,904
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From: Streetsboro, Oh
The FI is the best hand down. Starts rigth up even when very cold out, warms up faster, very tuneable just to name a few. I have no desire to ever own a Carbed street bike again. My step dad has a 02 Sporty and it feels like crap VS my 07.
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1200, 2005, accelerator, efi, engine, fuel, harley, harleydavidson, hd, injection, modification, sportster, sporty, start, surging
