Join Date: Sep 2016
Location: Los Angeles, CA
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Second bike feels different (ecu, E33, vibration, etc)
As you may know, I unfortunately wrecked my first bike. That machine was bought in Ohio late in 2016, with VIN ending in 645, and had approximately 4500 miles at the time of loss. It had the typical slight vibration from 5500-6500rpm but certainly nothing to complain or worry about. I did install a Throttle Tamer after a few thousand miles, and was planning on a full ECU tune to help smooth out the throttle. I didn't think it had a 'snatch' problem at first, but it started to become apparent when I moved to Canyon Country and was wringing the bike out (to the best of my ability) in tighter turns. I don't think I'd call it a problem, but I just wanted smoother throttle response.
I bought my second bike in California in early 2017. The VIN is the exact same except it ends in 712, and it now has just under 3,000 miles. I know the new bike is E33 because I saw the E33 additional parts when I did the 600 mile service (extra hoses off throttle body, etc). At low or on/off throttle, this bike almost feels like it has a throttle tamer pre-installed. However the 4500rpm 'fuel cut' is a more noticeable. It is 'smoother', to the point that it feels a little less exciting and fun. It even feels a little like the first power peak has been mellowed down, and the second one comes on a little later.
This bike has annoying vibration at most RPMs, and its the worst from 6000-7500 (higher peak RPM range). The right side of the wind screen vibrates at idle, as does the right mirror. The vibration is felt in the bars, the seat, the tank, etc. It's not horrible throughout most of the range and I can certainly live with it, but it does feel 'bad' and bothersome at 6,000-7500 rpm.
I think these differences are probably 'subtle but noticeable' - I clearly notice them, but could imagine others saying they don't notice it, or could imagine the dealership saying 'they're all the same.' For me, it's enough to do some research, spend some time (and money) with a manometer, per the 600 mile service instructions, and possibly still get a tune if that doesn't solve it. But for this bike, I feel like the tune is more for power/performance, whereas the other bike it was about smoothness/control.
I wonder how much of this is due to the E33 parts (different ECU, extra air/fuel hoses, etc). Is there any way to find out if the first bike (645) was E33 without being able to look at it? Does Suzuki send non-E33 bikes to other states? E33 is California and Europe I believe - so I wonder how much this has biased conversations about the ECU and vibrations and whether or not people notice 'problems'.