Terra 650 “Wuka King” install
This weekend I took a shot at opening up the Terra and installing the “Wuka King” type booster plug.
They have two versions; I bought the $90 version with the 2-position switch. (So far, I’m glad I opted for the switch – more on that later)
No riding impressions yet, I have a 25 mile commute in the morning. That should let me know what the effects are.
Well, the first thing I’ll say about taking the dashboard and side panels off is,
Man, there are a lot of screws to remove! And it’s my personal pet peeve, but it’s a variety of fasteners as well.
Mostly star bit, but one Phillips and 3 hex for the air filter cover. Make a decision and stick to it man!
I used HighFive’s excellent write up on advrider to get started.
The disassembly order is: dashboard, side panels (upper and lower) and then radiator cover.
High Five took off the red side cover and lower covers separately, but I found it easier to remove them together.
The last start bit holding the bottom cover is UNDER the red upper, but when everything’s loose, you can get to it.
Hell, I couldn’t figure out how to separate the upper and lower even with them off the bike!
Looks like they would as likely break as come apart.
You probably don’t need to take off that much to just do the booster, but I wanted to do a radiator burp as it had overheated once already.
Funny little side note, the friggin’ radiator overflow tank is ABOVE the radiator. This means if you stand the bike upright (like I did) and take off the radiator cap (like I did),
gravity pushed most of the fluid out of the overflow canister and consequently overflows out of the radiator spigot.
This really freaked me out. I’d never had a COLD radiator overflow.
J
Anyway, I installed my booster exactly the way Big Dog did. (Thanks BigDog). It worked out great. I opted for the Wuka sensor in the airbox install for two reasons.
First, if it good enough for the stock air sensor, it’s good enough for me. Second, the friggin’ lead is too short to go anywhere else anyway.
Here it is installed BigDog style:
All the wiring fits nicely tucked in beside / behind the air box and within the frame.
Here’s a close up of how I mounted the sensor:
I found a drill bit that provided a tight fit for the sensor, and used the cool little cable tie sticky on the radiator overflow tank.
I thought about maybe using a rubber grommet or silicone to seal around the sensor, but the fit is nice and tight. I’m not worried about it. Especially with the cable tie like it is.
Here’s where the bulk of the harness lives.
As someone had mentioned earlier, be carful! This is where the throttle cable and throttle body are. Leave some space:
Unlike the sensor lead, the switch lead is very long. I decided to run it along the side panel and under the seat.
Relatively easy access to the switch:
So, it did indeed only take an hour or so, and wasn’t too mind-boggling.
I’m a stickler for clean installs, so I took my time.
Before I buttoned her up, I started it up to make sure it still runs.
J I initially had it on the RED position (-38 degree shift) and it idled quite high. Immediately switching to the blue setting (-18 degree) dropped the idle to just a little above normal. (It was probably in the upper 70’s or maybe even 80 at the time of install, so the blue setting makes sense.) Again, I’m glad I bought the switching model. I like options.
Well, I have 25 miles each way tomorrow, so I’ll report back with my impressions. My bike was mossed at 700 miles and have 1500 on it now. Definitely runs lean, and feels mushy below 4K.
A single shouldn’t feel like that. I would be expecting torque down there.
