I am considering moding my stock 13 fxdf with:

SE stage 1 air cleaner kit
SE Dyna street performance staggered dual mufflers
Cobra fi2000 CVT

I want to go the auto tuner route so that should any bad things happen to the power-train I could quickly put all that factory stuff back in place and drop the bike off at the dealer for warranty work.

My two questions are:
Is it reasonable to assume the dealer or HD wont suspect or be able to prove that these modifications have been done once returned to factory configuration? Will the bikes computer tell them I've been naughty?

For the SE air filter the HD catalog states '*Recalibration is required for proper installation, and will allow engine to rev to 6200 RPM. See Dealer for details.' Will attaching the fi2000 allow me to rev the engine to 6200rpm? Not looking to race or hot-rod the bike. looking more to cool it down and lengthen the life of the engine. Do I even care?

Thanks!

 

Stage 1 with a tuner shouldn't do anything to your warranty. If your dealer tells you otherwise, I'd find another dealer to go to.

Not sure about tuning options with the cobra.

 

I agree. These mods won't hurt your warranty a bit. If you have concerns, have the dealer install the pipe and intake.

 

Jump in with both feet. Come on in, the water is fine. Well, except maybe for the Cobra. But hey if that is the best you can do. Buy the way, I don't think Cobra has an Auto-tune?

 

No, it won't.

 

Don't do the Cobra. Get a Dobeck GEN 3 with the bypass http://www.electronicjetkit.com/default.asp
and plugs for the O2 ports on the headers; run open loop all the time, no more closed loop 'hunting'- piggyback device plugs into the injectors and negative battery terminal, ECM stays pristine, no codes, on and off with no traces in around 20 minutes. You need the dealer download to protect your warranty with an intake mod, however, so would have to remove and replace with stock intake when taking the bike to the dealer if you just run a fueler, at least if you took in for any sort of engine problems. Have had mine in for tranny issue under warranty with open loop set-up, and blow-by routed out of the airbox, and they said nothing, of course bike throws no codes, so what could they really say: hey, where's the all the EPA mandated ***** the factory strangled your twin-cam with?

 

With today's fuels you would be nuts to fit any tuner that needs the O2 sensors disabled.

For some "rage against the man" reason some people think that disabling the O2 sensors and running in open loop all the time is some statement-making thing to do. What it actually does is make the bike run worse unless you run with exactly the same fuel in exactly the same conditions as when it was set up. It also throws away fuel (which aint cheap these days) by running the engine at performance-level air-fuel ratios when the bike is cruising and doesn't need it i.e. 90+% of the time.

Basically you are setting the technology clock for your bike back 25 years and making it run crap if you switch between gasoline, E5, E10, boondocks gas, etc.

 

Say what? Make the bike run worse in open loop? What are you talking about? Certainly not air cooled,push rod V-twins, man; maybe some perfectly balanced metric engine is happy being tied to a 14.5 to 1 fuel ratio, but no Harley I've seen is, unless you want to drop a couple of grand on a full tuner and lot's of dyno time. No statement here,chief, just a strong dislike of the way the bike cruised in closed loop, always 'hunting' around trying to achieve that perfect air fuel ration the O2 sensors had it tied to= you would have thought it was lean surging it was so bad. Bike runs considerably better, with much improved ride-ability just putting around and still manages 42 mpg average on open loop. What's next?- going to me that I'm losing top end lube because I've routed the blowby out of the intake?

 

You know nothing about tuners.

You are waaaaaaay off on the price and on what what they do. Pop back after spending a couple of decades working with EFIs and Harleys, rather than just reading the packaging for the product you picked out of the blue.

 

apparently you arent aware of how the cobra autotuner works. it makes continuous adjustments to the fuel mix and calcs the map changes of crank shaft rpm.
no dyno runs needed. no tuning specialists. because its doing it all the time.

all your doing by bypassing the o2 sensors is running a static map. which is fine if your always riding in the same conditions.