![]() The FZ1 has an Akra full exhaust and had its secondary butterflies removed with ECU mapping to match. Giving up a few HP on that bike's top end, but the ADV bike is not really about top end anyway. The Super T has a Yosh can on it and the uncorked 270 degree twin sounds wonderful, but still wears it's CAT, so I am not feeling bad about it's pollution levels. Flashing both bike's ECUs made a massive improvement, making their systems feel like an always perfectly dialed set of analog carbs - creamy, smooth and responsive. My '14 Super Tenere was annoying, my '06 FZ1 was so bad it was actually bordering on dangerous in this regard. My experience is with Yamahas, which suffer from on/off jerky throttle response. ![]() The older piggyback tuners did not have the blocked off "EPA" area on their tables. “I want to know what each individual cylinder is doing.” To do this, Pathak installs individual sensors at the header pipes, as far upstream as possible, and especially before the exhaust gasses reach any cross-over pipes. Unless you have a single-cylinder motorcycle, the sensor is located so far downstream that you’re getting an average reading from all the cylinders. ![]() While many aftermarket exhausts will have a bung to attach an O2 sensor and read the air/fuel mixture, the reading you’ll get from it is generally useless information. A quick peek at the air/fuel ratio throughout the rev range could also clue us in on spots to improve.Īs the saying goes, the devil is in the details, and it’s here that Pathak clues us in on a fallacy. Dips, flat spots, and irregularities generally point to areas of improvement. Peak power and torque are fun numbers to talk about, but Pathak is more curious about the entire curve. Even my mechanic buddy remarked that it sounded like it was idling and running healthier after I got it tuned.Upon receiving a new bike, the first step Pathak takes is to put it on the dyno to get a baseline run. His tune fixed a lot of the quirks and qualms that I had with a factory tuned 2021, and has made it an overall pleasure to ride. I highly doubt anything will happen to the bike, and like I said, your service department will most likely not care, especially if you make the job of submitting the claim easy by not making modifications apparent.Īnd seriously, Dave/VCycleNut is the best in the business. You're more than likely going to be fine, especially if you get in good with your local service department. Places like my local dealer, they're just like you and I, looking to eek out what they can for a little more fun, and they won't say $hit to Yamaha, especially if in regards to Point 2, there is no giveaway that something on the bike has been tweaked. If its a super by the book dealer, they most likely will. Still in regards to the warranty, its also partially up to the dealer if they decide to tell Yamaha the ECU has been flashed.Yamaha corporate won't be tipped off to a ecu flash from pictures As Dave said, you may need to erase his signature off the ECU case if they want pics of the ECU for whatever reason, but that is pretty easy all things considered. ![]() If you have a power commander, that is pretty difficult to hide (service manager's comment).
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