Joined
·
346 Posts
Going to use this area to do some wide band tuning on the z125
Im just waiting on a couple parts to arrive so I can mount a sensor to the small exhaust header on a all stock bike
What I plan to do is get a baseline reading on stock bike
Then slowly do mods
I plan on doing a free mod to the air box first opening up the intake hole to get more flow in
see if any gains are made (most likely top speed will only be checked, maybe a hill climb too)
and see what wideband readings I will get when doing so
Then if no gains are felt, or recorded I will try an aftermarket intake setup and see what changes those do
Because sooner or later most everyone will buy one anyways so I'm curious to see how much more those flow by reading the levels with the gauge
Then later a exhaust, since that will be a big expense I may try to borrow one or use a bike that has one installed to get the reading. I do like the looks of the stock exhaust and wasn't really planning on buying one right away, not until I can see more what people post if adding one can justify the cost in performance gains
Ive used this same wideband setup on many bikes and scooters, carb, fuel injected and I can say its very easy to see changes on a gauge
rather then trying to read plug colors or butt dyne. I have a full speed road I use 1 min away from home and a hill climb , also freeway if needed so makes it quick to do tests.
And I've seen little changes show up on a meter too and thats all with a sniffer in the past. Im sure welded on the header could be more accurate.
A lot of people say fuel injection will self adjust, yes but to a point
the injector will only flow so much, and they aren't going to put in huge injectors and run them at 1/4 flow they will be the correct size for whats needed on a stock setup and be able to function through different driving conditions
I've seen many times you just cant make too big of a change and have it running in the safe zone it will still run good enough, but lean
and only lean I'm concerned about is full throttle for a long time can ruin an engine. So thats what I always check first and try to get that perfect since these are such small engines we usually end up having to run near full speed just to keep from getting hit on roads around here
So anyways this is what I rigged up
I had a genius idea of mounting a ram ball to it, as everyone around here runs a ram mount on the bars somewhere
so makes it super easy to attach the gauge for testing
Before we would zip tie it somewhere really hard to read it and trying to get full throttle runs so this makes it a lot safer now
On the end for the power connection again all of us here have battery tender wires on the batteries so I put that type of fitting so its plug and play
This is what I'm using, this is all you need its a complete kit
only 2 wires to connect to make it work if anyone else wants to invest in one and post up their readings so we can compare. Im at sea level here
The kit even comes with one bung so you could use that to make a tail pipe sniffer if you had too
Aem Wideband O2 Uego Controller Air Fuel Ratio Gauge Kit Bosch 4 9 LSU | eBay
In the past I had used a tail pipe sniffer but it was long and had to be secured with straps to keep from vibrating out. Plus it looked crazy if cars were behind you probably thought you were brewing beer or something
This won't work on exhausts with spark arrestors and if you have a fancy exhaust you risk scratching up the tip
Also doesn't work well with stock exhausts that have small outlet tip and for the z125 would be a nightmare to rig up
So I decided I'm going to weld on a bung on each bike I do from now on. This way its the best reading you can get, and super easy to go back later to check tuning if mods have been done. Only negative is if you have a expensive exhaust then it will have an ugly bung capped off. Of course if it can be hidden that will be tried first but if not you will see it all the time
Here was one I did today, I'm sure you can tell which was my o2 sensor I added
And unfortunately no where to hide it
But it worked great and using a fuel controller got it pretty much dialed in
Nothing like pulling over, pushing a few buttons and watching it change on the gauge
more to come once my 12mm bung and 18mm adapter show up
Im just waiting on a couple parts to arrive so I can mount a sensor to the small exhaust header on a all stock bike
What I plan to do is get a baseline reading on stock bike
Then slowly do mods
I plan on doing a free mod to the air box first opening up the intake hole to get more flow in
see if any gains are made (most likely top speed will only be checked, maybe a hill climb too)
and see what wideband readings I will get when doing so
Then if no gains are felt, or recorded I will try an aftermarket intake setup and see what changes those do
Because sooner or later most everyone will buy one anyways so I'm curious to see how much more those flow by reading the levels with the gauge
Then later a exhaust, since that will be a big expense I may try to borrow one or use a bike that has one installed to get the reading. I do like the looks of the stock exhaust and wasn't really planning on buying one right away, not until I can see more what people post if adding one can justify the cost in performance gains
Ive used this same wideband setup on many bikes and scooters, carb, fuel injected and I can say its very easy to see changes on a gauge
rather then trying to read plug colors or butt dyne. I have a full speed road I use 1 min away from home and a hill climb , also freeway if needed so makes it quick to do tests.
And I've seen little changes show up on a meter too and thats all with a sniffer in the past. Im sure welded on the header could be more accurate.
A lot of people say fuel injection will self adjust, yes but to a point
the injector will only flow so much, and they aren't going to put in huge injectors and run them at 1/4 flow they will be the correct size for whats needed on a stock setup and be able to function through different driving conditions
I've seen many times you just cant make too big of a change and have it running in the safe zone it will still run good enough, but lean
and only lean I'm concerned about is full throttle for a long time can ruin an engine. So thats what I always check first and try to get that perfect since these are such small engines we usually end up having to run near full speed just to keep from getting hit on roads around here
So anyways this is what I rigged up
I had a genius idea of mounting a ram ball to it, as everyone around here runs a ram mount on the bars somewhere
so makes it super easy to attach the gauge for testing
Before we would zip tie it somewhere really hard to read it and trying to get full throttle runs so this makes it a lot safer now
On the end for the power connection again all of us here have battery tender wires on the batteries so I put that type of fitting so its plug and play
This is what I'm using, this is all you need its a complete kit
only 2 wires to connect to make it work if anyone else wants to invest in one and post up their readings so we can compare. Im at sea level here
The kit even comes with one bung so you could use that to make a tail pipe sniffer if you had too
Aem Wideband O2 Uego Controller Air Fuel Ratio Gauge Kit Bosch 4 9 LSU | eBay
In the past I had used a tail pipe sniffer but it was long and had to be secured with straps to keep from vibrating out. Plus it looked crazy if cars were behind you probably thought you were brewing beer or something
This won't work on exhausts with spark arrestors and if you have a fancy exhaust you risk scratching up the tip
Also doesn't work well with stock exhausts that have small outlet tip and for the z125 would be a nightmare to rig up
So I decided I'm going to weld on a bung on each bike I do from now on. This way its the best reading you can get, and super easy to go back later to check tuning if mods have been done. Only negative is if you have a expensive exhaust then it will have an ugly bung capped off. Of course if it can be hidden that will be tried first but if not you will see it all the time
Here was one I did today, I'm sure you can tell which was my o2 sensor I added
And unfortunately no where to hide it
But it worked great and using a fuel controller got it pretty much dialed in
Nothing like pulling over, pushing a few buttons and watching it change on the gauge
more to come once my 12mm bung and 18mm adapter show up
