Do I burn timing tables too?

So I burned the race eeprom onto my stock ecm(03 xb9s). Bike ran like crap and wanted to die. Reset TPS. Didn't help. The stock afv before was 113%. After the burn it was 100%. Was the computer needing time to adjust. I since then burned the stock eeprom back. Before I go any further any suggetsions? If I just do the maps do I also do the timing tables?

Any check engine lights to go with it?

I once changed a few parameters at once, without toggling the ignition between each write as instructed. I may have also forgot to read the existing before writing, I forget. It somehow screwed up the ECM and the limp home was like trying to ride a bucking, stalling bronco.

Burn the entire stock image back, and see if it fixes the issue. Then burn each table one at a time and toggle the ignition between each. See if that works

I don't recall anyone messing with the timing. Typically only the fuel tables are touched.

Typically only the fuel tables are touched.

Click to expand...

Its my opinion that this is why so many people run into issues after attempting to install a "race map" to their bike. Its also my opinion, flashing random internet "race maps" to your ECM is idiotic. So then the idea that installing only fuel tables will benefit the bike regardless of engine specific conditions as well as environmental conditions.

Im not saying that it does nothing, or its a bad starting point. If the race map has different timing for a reason, and thats because its meant to create power for race conditions. Not, daily rider. So logic would suggest using the "race map" fuel or ignition tables would be the wrong thing to do. Plenty of people have done the race map burn with great success... Well at least they are happy with the results and in no way shape or form has someone who knows a damn, evaluated their work and said "yes this is the best".

Again with ********, i mean opinion... The beat thing you could do from here is, utilize the information and tools to develope a proper custom tune specific to your wants and needs, starting with only fuel tables. As you gain experience, a different want for the bike change other tables and modifiers.

Good luck, dont break it

So I burned the race maps and it sounded like it was only firing on 1 cylinder. So up the driveway I went to reburn stock eeprom. Before I go out there again I need to make sure I am understanding this correctly.
1. Already backed up stock eeprom
2. open spy and load race eeprom
3. take race map and save somewhere
5. go to bike open spy and fetch eeprom
6. open maps load saved maps
7. then burn
8. toggle ignition

Well I copy and pasted from the race ecm maps I had to the front and the rear and burned each separately fired her up and sounded ok. Im making blackberry cobbler right now so I can't ride her yet. (Some things are more important than a test ride)

if you use the race map designed for your year it should be okay.
You never try to burn the whole eeprom, just burn the maps or edit as you see fit.

Ok, so no timing tables? Because I only did the maps.

Glad it sounds ok. It's good you backed up the full stock eeprom image as a backup. If any other problems, do the following.

Create race maps
1) open race eeprom
2) save race maps

Restore stock
1) open stock eeprom
2) burn stock eeprom
3) toggle ignition

Add race fuel maps
1) read full eeprom from bike
2) open race maps from file
3) burn front fuel map, toggle ignition
4) burn rear fuel map, toggle ignition

Timing should be the same method. I wish I had the experience to guide you with the timing, but I never touched mine. From what I recall, I was told stock was ideal enough. I'm sure power's left on the table, but I'm not comfortable enough to touch it or provide advice on timing

Thanks, I just copy and pasted front and toggled ignition. Repeated for each map and then did the same for timing. I believe the timing is intended and critical for the prescribed setup. Due to alterations in fueling it needs to be precise in it's sequence of firing. I know on the old Z1900's they would advance the timing just a hair for better throttle response.

Awesome. Let us know how it feels. I haven't touched timing on my bike, or my current car. The car before that was completely redone timing wise and it gave much better fuel economy and power. So I'm sure it has an effect, I'm just not sure how to tune it without a dyno.

It reminds me of tuning a carb bike. You get one or the other, meaning crappy bottom ,but from half to wot its tits. I purchased megalog viewer and have been reading my ass off. I will use the race fuel and timing maps as my takeoff for the data-logging I'm going to do. From everything I have read it seems to be the way to go.