ballmead
Wizard
Jared, I love you man. Just kidding. But I do like the fact that you are not afraid to tell people what they don't want to hear. It doesn't surprise me that people get much different MPG's with Ivan's flash. Let's look at the facts.
Ivan developed his flash in house on his own FZ1. He says so himself on his website.
Yamaha has changed the base fuel maps over the years to sort out the poor fueling on earlier models. I believe they changed fueling in 2009 and 2011. Dates may be wrong.
Ivan uses PCV maps developed on his bike with his bikes base fueling. He admits to not changing any of the base fueling maps.
So. If Yamaha made the base fueling rich in some areas, and Ivan did the same. Well, there you have it. I bike that may be running very rich in some areas killing fuel economy. Here's where people usually chime in with "no way, my bike runs perfect". It probably does. But it can be running rich where performance is not much of an issue, like steady cruise.
These are very simple facts. However some will choose not to believe them and accept that 28 MPG's is fine. Others will say its impossible that Ivan's maps are not perfect. I say there's no way they can be. Unless he bought every ECU that there were known fueling changes, and developed different maps for each, which we all know he didn't or he would offer different maps for different years. Very expensive and time consuming. By the way Two Brothers, Dynojet and various ecu flash companies offer different maps for different year bikes. I wonder why?
I've brought this up in the past, however it always falls on deaf ears. I just can't believe no one has dynoed Ivan's flash to adjust the fueling. That was the whole purpose of him using the PCV maps. Jared, I believe you dynoed a bike that had an Ivan's flash and you stated the fueling was a bit off. No one believed you either. Oh well.
I have stated a couple of times that I have indeed had my bike custom mapped after getting Ivan's flash.
I'm in Australian and our fuel is different here.
The problem is that I wasn't happy with the lower throttle areas of my custom map and have gone back to using Ivan's map, although I have modified it a little for better fuel economy.
Ivan really thinks outside the square when you have a look at what he has done with his PCV map at the lower throttle openings, it really is way different to any other map I have seen posted here or on the other forum and it just works.
Sent from my Nexus 5