I often see questions on here about what size bike carb main jets for various applications and often the reply is get it on a rolling road. Obviously
thst is the best way of setting the car up, but if you're just after a good road setup where every last BHP does not count and you are not making
ignition timing changes then I don't see why more people do not setup themselves. I did my bike carb fuelling myself with a wideband and while it
was a bit fiddly it was a very enjoyable process.
To me a wideband is an essential setup and diagnostic tool so i was just curious as to how many people actually use them.
I've two, one for each bank, won't get used till I efi next winter, but will initially self setup, and then use them in a closed loop arrangement.
I used one. For me the possibility of getting a day to spend at a RR was the barrier to getting it done professionally.
As it turned out the wideband wasn't really needed. I started out with a guess for the jets which turned out fine and only made minor needle
height and mixture adjustments based on readings from the wideband.
I think ZX6R Mikunis must be very well suited to a 1.8 / 2.0 Zetec.
Stu
Wideband and EFI makes tuning with megasquirt very manageable.
If only setting ignition timing was as accessible.
I got mine most of the way with a wideband, drove it about for a few months and drove it to Bailey Performance rather than on the back of a
trailer!
Getting it set up on the rolling road didn't seem to alter the top end much so I can't have been far out. High load at low to mid RPM was
much better though- I haven't spent much time comparing the maps but he spent a while fiddling about with the ignition timing in this area.
quote:
Originally posted by matt_gsxr
Wideband and EFI makes tuning with megasquirt very manageable.
If only setting ignition timing was as accessible.
I did my own fuel and ignition mapping. Wide band makes the fueling quite easy with a bit of common sense, the handbrake gets some abuse mapping some
areas of the map when a suitable hill/gear isn't enough though. There's plenty of ignition maps available on the internet for pretty much
every engine/cam/compression combination which will get you well into the ball park, then det cans for fine tuning especially part throttle/light load
cruising where extra timing makes a huge difference to general driving and fuel economy.
Ian
quote:
Originally posted by Oddified
I did my own fuel and ignition mapping. Wide band makes the fueling quite easy with a bit of common sense, the handbrake gets some abuse mapping some areas of the map when a suitable hill/gear isn't enough though. There's plenty of ignition maps available on the internet for pretty much every engine/cam/compression combination which will get you well into the ball park, then det cans for fine tuning especially part throttle/light load cruising where extra timing makes a huge difference to general driving and fuel economy.
Ian
Bought my MBE ECU with a pre-installed map from Scholar when I injected the car. They told me the map would be close but would need tweeking on the
fuel map, something they could do with a laptop and a bit of driving.
Once the engine was in and running it was better than it had ever been on carbs but a dose of looking at was needed to satisfy myself it was not lean
or rich. Rang Scholar who were happy to do it but since they were 140 miles away and I am happy to tinker they suggested that I buy a Wideband and
check it myself, they would talk me through any issues, even suggested I buy an Innovate LM1 from Grahame Goode.
Bought the LM1 and RPM adapter, plugged it all in and drove. Readings on the screen looked OK mostly and it recorded the data but then had to work out
how to download that to the laptop. Easily done and then installed the Innovate software. Worked out how to use it and bingo, new map. After a few
more runs the car ran better, far more economically and the readings were as suggested.
Downside to the LM1 is it only records 40 minutes on the built in memory. The newer LM2 has the RPM adapter built in and records as much as your SD
card can cope with.
10 years on I have used it on 3 engines, saved me a fortune in visits to Rolling Roads.
Well worth the investment.
quote:
Originally posted by davidimurray
quote:
Originally posted by Oddified
I did my own fuel and ignition mapping. Wide band makes the fueling quite easy with a bit of common sense, the handbrake gets some abuse mapping some areas of the map when a suitable hill/gear isn't enough though. There's plenty of ignition maps available on the internet for pretty much every engine/cam/compression combination which will get you well into the ball park, then det cans for fine tuning especially part throttle/light load cruising where extra timing makes a huge difference to general driving and fuel economy.
Ian
I've used 'general' maps to date for my megajolt and seems fine. How did you get on using det cans on the road? Were they ok?
I have one fitted but I got my bike carbs and MJ set up by Bogg Bros, I will continue to monitor mine but it's really only to make sure I am not running dangerously lean and it should show if my carbs ever go badly out of tune.
Top tip for ignition - if you have a decent car stereo in your car (less likely in a KC) you use the aux in to bring the signal from the knock sensor
and use the graphic equaliser to knock out high and low frequencies leaving only those around 4-6KHz, which is ideal for listening to knock
On my previous Westfield, I used megasquirt with a techedge wide band. I spent a fair amount of enjoyable time mapping it and was conviced I had almost perfected it........Northampton motorsport proved me wrong by extracting another 8 bhp out of it, a load of torque, and vastly increased fuel economy. As mentioned, shame you cant get the ignition spot on. That said, taught me lots about mapping.