Need Advice Stage 1 Intake Options
Take your time and talk to the tech that is going to do the work about tuning options.
This forum is a good source of ideas if you DIY but you need to do the final research yourself then make a decision.
Good Luck!
The HD factory remaps don't buy you anything worthwhile besides setting things back to factory calibrations. If you want full benefit from stage 1 modification dollars, you need to tune the bike. A canned MAP won't cut it, especially one with HD constraints.
The "little" adjustment capability is BS, the Delphi ECU has a 20% range.... but I hear you may bump into these limits with the more sophisticated exhaust and intake systems.
There is a bit of torque impact bottom end that is worth the sound, but killing is way too strong a statement, the factory download does nothing there anyway. There are better ways to adjust that rev limiter for racing purposes.
Last edited by joflewbyu2; Jul 14, 2010 at 08:47 PM.
I'm a novice and I've got a DIY tune on a stage 1 equivalent bike without any issues that gets 50 mpg on the highway and has less heat build up than stock or with XiEDs. No surging no flat spots, no hesitation, instantaneous acceleration, great 6th gear roll on power, just the fun of riding a well running machine. Its not about the fastest cruising bike for me, as some others here I have a second bike, a Ducati 916, if I want to ride quick on a fine machine. I just enjoy riding a twin that both looks good and functions well on the street.
If the techs are saying a stage one kit with factory download accelerates the same as a stage 1 tuned, they are drinking HD cool-aid. The throttle response is just not the same for one thing. These techs may have kept up with the factory training, but there are a few other better tuning tool options now. A factory down load is better than nothing however. And I had my bike tuned both stock and after stage 1 stuff was added and you could argue there is no noticeable difference in power until you reach 4500 rpm. (I installed the stage 1 equivalent stuff for style, not so much performance)
Those of you that don't want to tinker but also want a fine running machine are faced with some expensive options, but those of you that can run a laptop, can DIY tune. For about $400 in tools and a couple hours of riding you have a bike that runs better on the street than many pro shops, add on modules, or auto tune kits (remember they auto tune AFR not timing). And if you want to get into the EFI more, well there is timing and other nuances to experiment with.
I guess that was 5 cents worth, but even 2 cent opinions cost 5 cents when talking about a harley

Oh that warrantee thing is a classic HD dealer scare tactic to vacuum as much cash from your pockets as they can get away with. A lot of guys here wouldn't trust a dealer to work on their bike even if it was a warrantee fix... they do have to prove that what you did caused the failure.
Do the other EFI products need a laptop (like Power Commander, etc)?
Sorry if I'm not using correct terminology. I'm a couple of months away from buying an EFI Dyna, and I'm still trying to get a handle on the EFI thing.
The Best of Harley-Davidson for Lifelong Riders
From: Dynojet
What is the difference between the HD Stage 1 EFI modulator 'flash' and an after market EFI programmable modulator?
The Stage 1 reflash from Harley raises your rev limit 500rpm and up to 2004 also altered the fuel curve slightly over the stock ECM. From 2005 and up all it does it raise your rev limit. This is a one time download that is not able to be altered in any way.
G:
See? I don't make this stuff up. Now, it's entirely possible that Dynojet is being a bit parochial about all this since they're trying to sell Power Commanders but, I dunno.


