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What fell off my Scrambler?

3K views 11 replies 5 participants last post by  casida 
#1 ·
I am in the process of removing EVAP, O2 and AI all at once. I just notices this small, square, rubber gasket underneath my 2012 Scrambler. Is about the size of a dime (US currency) Any idea what it fell off of? Maybe a gasket for one of the electrical connections I unplugged?

 
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#3 ·
Here's a better shot. All I can think of is it fell off the multipin connection to the EVAC canister when I was unplugging it.



WAIT A MINUTE!!!... look what else fell off my Scrambler!

 
#4 ·
Yep, it fits inside one of the connectors. =) Based on the size, I'm guessing it's the one for the EVAP canister. That connector (unless you unpinned it from the ECU like I did) should still be on your bike. Flip it over and see if there's a clean spot where a seal was.
 
#5 ·
I already wrapped the connector in shrink tubing, but it looks like it might be the right size. Hey, how hard was it to disconnect it from the ECU? Does it just plug in on the top side, or is it hard wired into the main harness?
 
#6 ·
Mm, you have to split the harness and run up one side to the ECU. The other side connects to a shared ground, and that needs to be unwrapped and the one wire clipped, then the other goes into the ECU. Pulling the pin requires you unclip the purple retainer clip at the back, then use a pin removal tool or a small screwdriver to gently pry up the plastic pin retainer and slide the pin out.

Pretty easy if you're used to doing such things, but not really worth it unless you're pulling looming for lots of other stuff, like, say, AI, alarm connectors and both O2 sensors. I'm super, super picky about my wiring, though, so if it doesn't drive you nuts like it does me, then I don't recommend it. =)
 
#7 ·
errr... I'll pass. I may have to re-install all that crap someday. After all, I do live in California! Thanks for the info!

EDIT: I see you're in Cali too!
 
#11 · (Edited)
Yes, I removed the Arrow baffle. It can be quite a bitch to pull out, especially the first time. You have to remove the end clip first. I ended up putting it back in because it was too loud. I am going to replace it with this baffle as soon as it arrives in the mail:

http://www.triumphrat.net/twins-technical-talk/224761-arrow-2-2-exhaust-system-baffles-3.html

The AI and the O2 systems are completely different systems. The AI can be removed without remapping. I removed the O2 sensors because I am installing a performance tune map that requires the O2s to be removed:
http://www.triumphtwinpower.com/triumph-twin-power-efi-tunes.php

I am installing Tune #2 here:
http://www.triumphtwinpower.com/scrambler-efi-tunes.php

The AI removal helps with eliminating he popping on decel. The O2 removal helps with eliminating throttle snatchiness.
 
#12 ·
Yep, the performance tuning on the flat maps is done without the aid of the O2S. As soon as you exceed 50% load (MAP) or 70% throttle (TPS), the ECU goes into open-loop. The open loop operation ignores the O2S, and uses flat maps.

The O2S, in this sense, is only really checked when cruising, deceleration, or low throttle usage. The stock maps are poorly tuned enough once you start making changes, the throttle response gets really snatchy, and the low throttle usage performance is quite... Unimpressive. This, too, could be tuned, but it very fiddly and the O2S response sampling is slow enough that it's not going to react fast enough to facilitate smooth throttle response.

With regard to Cali emissions things, if they start integrating them in they'll either start at a) just ECU checks (I'll pass, no sensors to make me fail!) or they'll have a grandfather clause. Think about how many Harley owners (and there are a LOT out here!) would be up ****'s creek without a paddle if they don't do anything like that. =)

Overall, legislation is focused on other issues right now, since the last push for motorcycle regs didn't really go anywhere. And 'doing it right' is a reasonable risk in my eyes. But these are all just my considerations. =)
 
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