I wanted to start a new post on this because I keep reading about so many people having issues with fuel downloads, remapping, etc... (i.e., Warren888's post about popping on decel) I attended the international motorcycle show here in Houston and found a product from Cobra called an FI2000R that I'm going to try out on my 06 Street Bob. It is a plug in unit that has three adjustment screws (idle, mid and high rpm) and requires no computer downloads, remapping etc... I had an FI2000 on my old Vulcan Nomad and it worked like a charm. It totally eliminated backfiring on decel. It comes preset for your stock bike but you can use the adjustment screws to enrich the fuel/air mixture incrementally until your bike stops popping on decel. It is seat of the pants tuning but it worked very well for me. You can always pay for a dyno if you want to tweak it for maximum HP. It also gives you the ability to adjust as you change air intakes, mufflers, pipes, etc. and gets the dealer out of your pocket for future remaps, dynos, etc. . I wanted one when I first purchased my street bob in June but it was only recently that they came out with a closed loop unit that includes the plugs for the O2 sensors (I didn't want to jeopardize the manufacturer's warranty). I have one ordered and it should be here in a week or two. I'll post in a few weeks and let everyone know how it works out. If you're interested, you can check it out on their web site.

John in Houston

 

sounds the same as a DFO, aka TFI. For the life of me I don't know why people try to make things more complicated than they have to be by using a power commander when one of these simple little gizmos will take care of their problem for a lot less $$.

 

I'm with you. I'm not looking to become a bike tuner, nor do I want to spend hours tuning my bike. Just want pipes for the sound and looks and want to spend my time riding... not tuneing.

 

I just went to Cobra's sight and was checking it out. IMO, the instructions make it look like a PITA. How hard is it to hook up ?

 

The one I installed on my old Vulcan took about 2 hrs start to finish but I had to splice the wire connections. The newer ones have factory plugs on them so it should take less time. Of course there will be three plugs to connect for 06 and 07 models since they utilize 02 sensors in their closed loop systems.

 

I have a Harley SE Race Fueler. It's similar to the Cobra except it has 6 pots. Pretty easy to work with. The only issue (if you can call it that) I've seen is that I had it adjusted for the cooler weather we were having in GA but when I rode down to FL for Biketoberfest, and experienced the record heat that weekend, I was getting a lean code. I adjusted it and all was fine again. Now that I'm back in GA, and the weather was cool this weekend, I've gotten a rich code. Every time the code was for the rear cylinder. I have Bassani Pro Streets so that may have something to do with it, I'm told, since there is not a crossover like on the stock headers or the V&H's.

 

I have the TFI, which has no pots to adjust. It is all digital, with 3 modes. It takes all of 30-45 minutes to hook up and tune.
The unit is load based, and works quite well with the 02 sensors on the 06 models. Totally plug/play.

Go here: http://www.techlusion.com/

DougJ

 

How was the install with the TFI ? Looks like a ton of wires.

 

The Revtech DFO that I have for the 06 Dyna is not adjustable from idle to around 3000 RPMs which it leaves up to the O2 sensors.It is completely impossible to eliminate Decel popping with this unit on my bike.This does not mean the older or possibly the newer versions are no good just that the one I have is useless.When I get my SERT I may give it away to someone who wants to experiment.It may work better for someone who has more conservative intake and exhaust mods or enjoys that rough old school sound.

 

Maybe this topic should be turned into a sticky one cuz' I've responded to it a few times already.

The adjustable FI units are superior to the the downloadable map type FI units because they allow YOU to adjust the fuel on your bike. Each motor runs just a little different, even with the same modifications, this is a known fact, so having ONE generic download availiable to you can sometimes be a problem. I use the Dobeck Performance computer because it allows YOU to adjust your own mixture. It operates very similar to a carb mixture adjustment screw and just as easy. Dobeck (Techlusion) was the first to offer these adjustable FI computers and all the others are simply copies of their original design. They're relatively cheap (mine was around $240 bucks) and they're pretty easy to install. You don't have to be a mechanic to install one. You'll be shocked at how rough the bike runs on the stock computer settings. As soon as you turn the idle screw you'll feel the bike dramatically smooth out. My buddy Steve and I were amazed the first time we used it. I have a tech from the local Harley dealer say that my bike ran "****" at a barbeque last summer. I pulled the seat and showed him the Dobeck computer and he said he couldn't have gotten the bike to run any better than I did in 5 minutes of adjustment. My bike runs absolutely perfect with this computer, it never pops and it never surges. I'm very pleased with the unit and I love the fact that I have complete control over my own fuel mixture on my bike. You can't go wrong with one of these units. I highly recommend them.

www.dobeckperformance.com

P.S.) Dobeck has a short installation video on the site. It's kinda funny cuz' if this guy can install it YOU can definitely install one. LOL!