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1. Northern california accel fuel injection tuning software#
2. Northern california accel fuel injection tuning Pc#

The screw or PC only has effect at idle and just above. Richening up the bike get rid of flat spots or running faults is rarely the answer.

Northern california accel fuel injection tuning software#

99/up.These require a PC and the Marelli software to do the screw turning electronically. It is adjusted by a screw on or in the control unit up until the 15m system. (Carbon Monoxide)This step requires the gas analyzer. After all this balancing act is done you should have a fairly decent running bike. If there is not air induced that is not part of the original equation. At the CO specs MGNA and EPA agree on it is not really set too lean to run right. Since there is no provision in the system to measure the actual induced air the system is dependent on this basic fact. Because they are going to get the same amount of fuel ,whether its right or wrong. The point here is to insure that both cylinders are getting the exact same amount of air. There are new specs for the air screws and TPS. If out of balance adjust the brass air bypass screws. Then check the balance at just off idle. Set the bypass screws to the specs first. There are stop screws under the TB if this needs adjustment. Disconnect the linkage from left to right for this step on 4 valves. After the synch is as good as you can get it, you can see if the base position of the throttle plates is close at idle. Don’t worry about what it does at idle right now. This is where the engine moving some air. The most important part of the synch is to do it at 3000 rpm. Most models its done with a plastic thumbwheel under the left side TB. The TB must be adjusted to a very fine degree of balance. Ignore the fact that it runs worse than it did. Connect your balance meter/carb sticks and start bike. Turn them in counting the turns until closed. There are brass bypass screws on the TB’s. Access to an exhaust gas analyzer is a boon. I have used mercury sticks, but really have been impressed with the convenience and precision of the Twin Max electronic balancer. To start the setup you will need a very accurate way to balance the throttle butterflies. These are much more sensitive than carbed bikes. So lets make the most of what we have to work with.Īny maladjustments can turn a great running bike into a sputtering pig. A real air mass meter with oxygen sensor closed loop control would make for a bike that runs perfect.Not likely to happen. It’s a calculated model at some elevation. Mainly because of cost or space limitations, there have been no provisions for measuring the actual induced air. These systems have had problems on bikes ,and not just Guzzi’s. It is much more under heavy acceleration. This is the “pulsewidth”.It’s measured in milliseconds. The amount of fuel is governed by the time the injector is turned on or open. It decides in an instant how much fuel to inject on the next cycle. So the ECU knows speed, load and temperature of air and engine. It counts the teeth so the ECU knows where the pistons are in their stroke and the engine speed. The camshaft position sensor is an inductive type. The signal from ECU to these sensors is known as reference voltage. The throttle position sensor works in a similar way. It sends a low current voltage signal to these temp sensors where it is “grounded” to a varying amount based on the temp. The electronic control unit (ECU) is the brains of the outfit. As they heat up the resistance goes down. These are NTC, negative temperature coefficient. It uses air and cylinder head temperature sensors. The following is Mike Haven’s article from the MGNOC Newsletter on Injection Set-Up for all Guzzis