THE TRUTH about the Booster Plug and Fuel X! What do they really do? Which one do you need?? 

I agree on all points, and it seems great minds think alike! Good call checking the plug to verify. 👍

Thank you. Royal Enfield 650's are all about style. I changed from a bmw f800 with almost twice the power of my Royal Enfield 650 and i am very happy just the way it is. If I wanted a more powerful, faster twin cylinder bike they are easily available and probably much cheaper than modifing my Enfield.

Yep, very little if any performance increase with all those changes. I sent my booster plug back for a refund. I have dropped 14kg from the weight (which is probably the most significant performance improvement). Fitting a LiFePo4 battery when the OEM one dies is probably the best bang for buck in that regard.

Thanks! It's a confusing subject, hopefully I explained it well 😅

Very true! Just a bonus that it sounds awesome 😎

@@jewciferrides lol ya great minds do sound alike, I love the sound in Deceleration as well.

ummm mine didn't pop until I removed the stock headers for the open pipes from Hitchcock's, so it isn't just the cats causing unspent fuel to burn

@@SeamusMacMattain yes it is but with the stock pipes, they are mufflers and they did their job, they muffled the sound of the crackle and pop.

Kawasaki has an enricher on the FI Mean Streak 1600. Its odd to have a "choke" on an FI bike.

@@mijithebub If Kawasaki is also selling their bikes very lean, a choke makes all the sense in the world

FuelX (all modelsl work in closed loop mode, when the ECU is listening to the O2 sensors, inserting various amounts of false lean (or rich for 1 and 2 on pro) signals for the ECU to make corrections. Closed loop is idling and cruising with stationary throttle. So if someone had made their bike, lean through modifications or altitude or otherwise to the point where it was not idling correctly, That's where the Fuel X would come in. The booster plug works in open loop mode, under acceleration and changing throttle position. It keeps the closed loop mode stock.

@@jewciferrides I understand the general idea of the FuelX. What I don't understand is how a rider can reliably select the best map, in real time, for the immediate situation. Seems as though many riders just set it at 5/6 and leave it there, which defeats the whole purpose of the multiple maps. Without some sort of sensor telling me if I am too lean or too rich for the current moment, it appears to be nothing more than a guess.

@@TheBigBlueMarble Exactly. My opinion is let the ECU and O2 sensors do their job for idling and cruising. The only time I would ever consider a Fuel X would be if I'd modified my engine into no longer idling properly. In that case, I'd just find the map that got the idle back to healthy.

These bikes are designed to run lean from the factory. No amount of ECU correction can fix that.

@@WaterDR-tw8re Not so. They are not designed to run lean, they are only configured to run lean. In fact, they run hot and rough at low RPM when running so lean. This can easily be changed by passing modified O2 and termperature data to the ECU during closed loop operation. They will then run cooler and smoother in closed loop.

I don't have them so I can't say for sure, but personally if I went full headers and exhaust, plus my DNA intake, I would start looking at more advanced fuel management and tuning than my booster plug or a fuelX would be able to provide. These (and most) bikes run pretty lean from the factory So there's not a ton of room to open them up before they start bogging down.

I'm sure it did to a certain extent, but highway mileage would stay the same as the ECU only looks for ambient temperature during acceleration, not cruising. Conversely a fuel X would affect your highway mpg, as it inserts false lean signals from the O2 sensor rather than modifying temperature.