Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Zee110]

Hi everyone

Has anybody tried one of these on a 103 or 110 ,if so what do you think ? thanks

[grc]

Don't waste your money.  Do a search on this site and you will find a few existing threads about that product btw.

Jerry

[Fatboy]

 I'm using this device and it works as advertised, no complaints.

 Checking around the various forums is good advise as the consensus seems to be those who own and use one are happy campers but their are those who have other preferences which is fine. You'll get similar opposing points of view on pipes, cams. headlights, throttle bodies, polish & wax, tires, seats, paint color, handle bar height, suspension parts, speakers, amps, etc, etc, etc.

 Do your homework, speak to each MFG's tech support folks and get what "you" want to do the job. I recently saw a You Tube video where a Fi 2000 was added and digitally measured after a full tune was done by a well known Tuner with a very well respected device and the results were the Fi2000 was still making real time fuel adjustments throughout persons ride. Call Cobra I'm sure they'd be happy to provide the link.

[Steve Cole]

Any device that tries to alter what the ECM is doing after the ECM is going to never be able to find a happy adjustment. This is very simple to understand as the ECM is constantly adjusting, so it's a moving target. When you in effect cut the wires and then try to readjust again by the time you've done that the ECM has already changed again. The ECM makes fuel adjustments twice per cylinder firing event and it controls the firing events. So as engine speed changes so does the ECM. IMHO there is not one of these 'cut the wires' type devices that can really stay up with what the ECM is doing let alone KNOW what the ECM is doing.

[Fatboy]

Any device that tries to alter what the ECM is doing after the ECM is going to never be able to find a happy adjustment. This is very simple to understand as the ECM is constantly adjusting, so it's a moving target. When you in effect cut the wires and then try to readjust again by the time you've done that the ECM has already changed again. The ECM makes fuel adjustments twice per cylinder firing event and it controls the firing events. So as engine speed changes so does the ECM. IMHO there is not one of these 'cut the wires' type devices that can really stay up with what the ECM is doing let alone KNOW what the ECM is doing.

Steve,

 Help us all understand better since this is your area of expertise, doesn't the Fi 2000 work solely off measuring the cranks rate of acceleration/load and adjusting the amount of fuel the fuel injectors squirt up to 80 times per second?

Does it even interface with ECM?

I know it doesn't store any data or used a predetermined map it just makes adjustments in real time as the bike is running, so essentially every time the bike is turned off it resets or has to relearn upon restart.

Fatboy

[Steve Cole]

ALL these "cut wire" type devices try to alter the decision the ECM has made, so as those decisions are made in real time the "device" has to add or subtract from the new decision. They do this by taking the pulsed width of the injector after the ECM and altering it or by trying to lie to sensor inputs to the ECM. One needs to remember that the ECM fires each cylinder 8.33 times per second at 1000 RPM and 50 times per second at 6000 RPM. The ECM corrects the fuel adjustments twice per cylinder firing if needed, so sometime you get once and sometimes your get twice per cycle per cylinder. These type device ALL work after the fact, the cylinder firing has already occured so they have to by nature start behind.

Ask yourself how does the device know about this? Answer , it doesn't! Look there is some good for a basically stock bike in some of these devices but there is a lot more advertising hype than reality. 80 times per second only tells me that it is fast enough some of the time and too slow at other times.

[grc]

Besides what Steve explained, you also need to understand that this product has absolutely no adjustments or customized maps available for either the owner or a technician to fine tune anything.  And no matter what the ads say, there is no such thing as a "one size fits all" solution for tuning.  So if you need to make alterations to timing or tweaks to fuel settings to address something like a troublesome exhaust design that causes decel popping for example, the Cobra won't allow you to do those things.  There is also nothing that allows you to alter fuel settings for idle, cruise, etc.  The only thing it does is alter fuel settings when accelerating.  That would mean you would need to buy another tuning package like the TTS, PV, SEPST, etc. to make all those other adjustments.  IMHO it would be much better to just spend the money one time and buy a full featured solution. 

The entire "tuner" thing has become such a money maker that there are numerous new whiz bang black box super duper wonder products being introduced as we sit here typing.  They are marketed to people as a simple bolt on part to automatically handle everything for them, but in the real world of modern complex engine management systems there really is no such thing.  Sadly many of those companies allow the sales people and advertising copy writers to run amuck and make huge claims that are dubious at best and in many cases totally false.  The old expression "Buyer Beware" applies big time.  It's been my experience that the more flowery and ambiguous the prose in the ads, the more you need to be cautious.  Kind of like the huge ads with the pseudo-scientific words and phrases that try to sell you "plasma" spark plugs for $25 a pop.

Jerry