Ecm

Reply Subscribe

Thread Tools

Search this Thread

Jun 3, 2014 | 03:04 PM

#11

JimGnitecki

Stellar HDF Member

Joined: Feb 2014

Posts: 2,710

Likes: 529

From: Lethbridge, Alberta Canada

Quote:

Originally Posted by db133

Re: HD chrome they used it under black paint on my rack ! Strange but true.

Re: Ecm I have a power commander connected. I was wondering what would happen to my Dyno tune map. Collected the bike (£500 ! ouch) nice ride home, time will tell.

Thanks for your input fascinating subject, any one have a picture of inside the ECM ?

Kind regards to all. db

A Power Commander map simply MODIFIES the signal that the ECM is sending to the fuel injectors, either adding more, or subtracting, fuel compared to what the ECM intended. If the ECM fails, it should not normally break the Power Commander. Likewise, a Power Commander failure should not normally cause the ECM any harm. However, if there is a catastrophic event like a voltage spike, it could kill both.

The power paint on the luggage rack over top of the chrome was likely simply the HD factory running short of black luggage racks that production day, but having plenty of chrome ones, and making the tactical decision to coat the chrome ones with black powder and us them on the "black" bikes.

Jim G

Jun 4, 2014 | 02:40 PM

#12

db133

Thread Starter

6th Gear

Joined: Jan 2010

Posts: 14

Likes: 0

that all makes sense to me J.

So now the Q ....whats the best way to stop "catastrophic event like a voltage spike" ?

off topic ... how long does a battery last 4 or 6 years ? allways kept on trickle charge .

Regrds

Jun 4, 2014 | 03:16 PM

#13

JimGnitecki

Stellar HDF Member

Joined: Feb 2014

Posts: 2,710

Likes: 529

From: Lethbridge, Alberta Canada

Quote:

Originally Posted by db133

Catastorphic events are too rare to be worried about (e.g. an alternator short or regulator failure).

I think a Harley is a tough environment for a battery: high current draw to start a big twin, lots of vibration compared to a car, etc. I wouldn't plan on more than 3 years unless you use a SMART (not regular) trickle charger, AND you are very lucky.

Some of the bad things about continuing to use a weak battery are:

- It will leave you stranded at the worst possible time

- It will irritate you a lot before it finally fails (mysterious electrical and engine performance shortcomings)

- It can cause the contacts on the starter relay to overheat, melt into each other, and then run the starter, even after you release the starter button, until the battery, or starter, or both get ruined.

Running a weak battery makes no sense. New ones are not that expensive.

Jim G