Thanks for the advice DAWG. I went to the Zipper's website last night and installation of TMax did not look like it would be a problem and they even have a base map for a 110 with fatcats. My intent was to install the TMax at some time even if I bought the SERT now but did not want dealership to change bungs on new pipes for a SERT if they would need to be changed later for the TMAX. I wasn't sure if they would have to be changed if the O2 sensors were different - wide vs. narrow. Are the bungs a one size fits all? Also for everyone's info about mods and warranty issues - it is my understanding that if an engine problem develops moco would have to prove the mods caused the problem. though it would be a hassle and no one would want to be in that position the worst scenario would be to file suit and name moco and manufacturer of your mods as defendants and then let them fight about who caused what. Thanks for the advice and the beer would be no problem.
2J...the SERT does not do anything but modify the existing ECM, and does not change the stock O2 sensors used by the ECM as it comes from the factory. So, with the pipes you are getting, nothing would need to be changed regarding bung placement. The TMAX w/AT uses those same bungs, just different sensors, and from my understanding, fitment with those headers is not an issue at all. The SERT does not reside on the bike, but is merely an interface, enabling the technician to load maps (or programs) into the stock ECM..it is also used during the tuning process on the dyno to dial in the A/F ratio and timing, if necessary. When using the SERT on the dyno tune, the tech makes adjustements to the air/fuel ratio accross the RPM and/or throttle position for your particular motor and configuration, so it is a "custom" MAP, just for you which can be saved to a CD or laptop...it's just a file, like any other file on a computer. When he gets through with the tune, the SERT is disconnected from the ECM and the computer he is using to tune, he puts it in a box, and hands it to you, along with the cables and CD's. Your ECM then operates around a new set of A/F parameters, still utilizing the narrow band (only operate under certain no-load conditions) sensors that came on your bike.
The TMAX with AT completely REPLACES your existing ECM (it IS an ECM (electronic control module)), and using a base MAP loaded by Zippers to give the unit a good "starting point" to let the Auto Tune do it's thing, based on their proven motor/pipe/breather configurations, it gets feedback from their Wide Band Sensors (which replace the stock sensors) and constantly tunes itself around that base map and A/F ratio chosen by you or whatever person installs it.
If you think of a narrow band sensor as a device only capable of "seeing" a narrowly defined range, and a wide band sensor as a device capable of "seeing" a much, much wider range, it'll help you understand a little better, maybe. Using temperature as an analogy, a narrow band temperature measuring device might measure temps from 75-125, or a 50 degree range, and a wide band might measure temps from 0-200, or a 200 degree range. Same thing with the O2 sensors, they're just measuring exhaust gases, or actually just feeding a voltage back to the ECM so it'll know what to do, if anything.
If, somewhere down the road, you decide to change pipes to Rineharts, V&H's, Hookers, or whatever, the Tmax will adjust itself after a few rides, without further input by you or any other tech. If you make major changes to the engine, like cams, heads, larger valves, larger throttle body...those kinds of things, it would probably require loading a different "base map" (a "close enough" sort of thing, provided by Zippers exhaustive files of various engine configurations), then let the system tune itself again.
Hope that helped a bit...I've been doing a lot of reading on this subject.
Author
Topic: Power Comander Vs SERT (Read 31006 times)