To the OP: Kind of makes me wonder if the Andrews rep didn't understand what you were saying... the Evo 80" Big Twin came out in 1984, and they were all dual-fire. The Twin Cam 88" came out in 1999, and the Twin Cam 96" came out in 2007, and all Twin Cams are single fire, I believe.

As Graham said, The XL1200 Sportster you have is a completely different engine from either the Evo Big Twin or the Twin Cam. Your bike actually has 4 cams, each with one bump driving a single pushrod! The Ironhead Sportster engine actually came out in 1957, and the Evolution Sportster engine with aluminum cylinders and heads came out in 1986, and is still the Sportster powerplant made today. Your 2006 Sportster model is single fire, I believe.

There is a Sportster forum as well, and the real XL gurus are there. This forum is more of an Evo Big Twin place.

 

I have an 84 and when I got it, the stock ignition had died and been replaced by points. I changed it out to a Crane Hi-4 single fire. Compared to the point style dual fire...it was much smoother at idle,and a little smoother at low RPM. After you hit second gear...no difference at all.

 

Except that there are no longer any points to wear out and need adjusting!

 

I believe that all EFI harleys are single fire, including my evo.

 

single fire makes sence on paper,dosnt cross over to real world.we`ve tested just about every single fire ignition on our dyno,no HP/TQ gain or loss.ANYTHING will be better than points and no evo ever came stock with a single fire ignition

 

Its the only ignition I've had on mine so no comparison- also no trouble! My motor is worked so power to boot so no comparison on power. but Im happy w/it

 

Back to Sportsters, they have 4 cam shafts. My old 84 iron head Sporty's ign. module went belly up, and so I put in points and condenser along with the breaker plate and coil. It never ran better, and I could fix it if it did mess up. I ran it 20,000 miles on the same points and condenser without even checking them before I sold it. At the time, a new ign. module was around $100. I think it cost me $35 to switch. Did not have a lot of money at the time.

 

97-98 MM EFI does have single fire.

 

That's true, but I sense a fight comin' on here. I run a Daytona Twin-Tec single-fire 1007-EV ignition (or whatever the hell it is...) for the simple reason that it makes me feel COOL and BAD-***!

I'm going to head over to Peace and Quiet, relax a bit, and have a nice piece of Bavarian Beer Cake...

 

OK, I just finished installing a Dyna 2000 single fire ignition on my '99 FXR2. I got it all buttoned up and took it for a nice little shakedown run. I can say in no uncertain terms that I cannot feel a bit of difference in how the bike started or runs. The bike was already an easy starter and ran smooth before the change over. I replaced the stock module with the Dyna because the bike was intermittently cutting out on me and I pretty much eliminated everything but the module and the Pick-up as being the cause. So, if I was looking for performance gains for $300, I would look elsewhere. Probably put the cash towards a mild cam.