MSefi.com read only forum (Jan.15,2018)

VB 6 cylinder 202 Commodores had an idle solenoid similar to the one pictured. They were also used for idle-up on carburetted cars with air-con (80's Barinas etc). If you want to use an ISCV, early Hyundai Excel's have a Bosch 3-wire valve.

1,2,3 and 4,5,6 works well. I haven't tried other combinations.

With the larger plenum, we got slow and exaggerated throttle response. Blipping the throttle slightly would produce a flare to a RPM way above what it should have (eg. throttle opening should produce a rise to 1500 rpm for .5 second, where it actually flared to 2000 rpm for 1.5 seconds). There was ...

The original PI Plenum is 78mm ID, with a capacity of 2.5 litres. The pipe I used is 76mm OD or 72mm ID. This gives a plenum capacity of 1.77 litres. The Ford 65mm throttle body is probably right on the upper limit for this 2.5 litre engine,
but is a really good unit incorporating TPS and Idle ...

We originally attached a Ford 65mm throttle body to the existing PI Plenum. The volume of this plenum is 2.5 litres, and we were getting a bit of lag on throttle opening and closing, and having a lot of trouble tuning the over-run and acceleration enrichments. The runner length from plenum to valve ...

Are you using the individual butterflies or a throttle body. The balance pipes are plumbed into the throttle body after the butterfly, and I think they're designed to enable the idle valve to allow air into the throttle body when the buttterfly is closed. We removed the butterflies and attached a ...

Is the fuel pump turning off after 2 seconds when the MS is powered up. I has a similar situation where the pump stayed on and the injectors (8) were all open (both channels). Re-loading the firmware fixed it.

Hi Matt,

Do you have any info. on how the accuracy is affected? I've been using a sensor that I extended the cable on, and
I blissfully thought it was still working OK, which is probably not the case. There is a Part NO 3737L that is listed as a
sensor with long cable.

GM Holdens manufactured in Australia use Bosch Sensors that have the standard (2.47K) resistance and a 12X1.5 metric thread. They are also
specified for BMW, Hyundai, Mitsubishi and Subaru.

http://www.injectacarb.com.au/coolant-t ... -p-78.html

I've progressed some with this, but am having trouble getting a good throttle response. There is a .5 second delay after opening the throttle until the revs rise, then the engine continues to rev for 2-3 seconds (depending on the size of the throttle opening) after the throttle is closed, then it is ...

I built an in-tank pump for a Triumph Stag, using a locally sourced Ford pump. I went through the same concerns that you are experiencing, eventually speaking at length to a very helpful local EFI shop, who showed me several pump failures
(after 20 or so years use), some where the pump had ...

If you contact Kendall Shore @ Shore Electronics (07 4632 2533) in Toowoomba he may be able to help
There is a small MS community around this area, and most would be willing to help.

For ordinary use, they both do the same job. High Impedance are easier to use with MegaSquirt...just set them and forget them. Low impedance require some experimentation with the PWM Settings, and this can be a lengthy and testing procedure. Low impedance can also be run via a resistor pack which ...

Thanks for that...I'll persevere with it for a while to see if I can get a better tune. What you said about 70% throttle opening equating to 100% is correct, a rapid throttle opening to about 40% TPS causes the vacuum to raise to 100kpa for about 2-3 seconds, and this is making it hard to get the ...

Yes...your chart is correct. Just experiment with the points in the chart as the engine warms up in order to achieve a smooth transition from cold start (say 1300rpm) until hot idle (800rpm).

PWM of 0% means that the solenoid is fully energised all the time, and the valve is held shut, not allowing any air to bypass the throttle plate. The higher the PWM % number, the less time the solenoid is energised, and the valve is allowed to open and allow air to bypass the throttle plate to ...

Probably 140-150 HP.

I have a Triumph Dolomite Sprint 2 Litre engine and am using a 65mm Ford Throttle Body, which is probably too big for this engine. Is it possible/advisable to use a restrictor in the inlet to compensate for a too-large throttle body? If so, where should it be positioned...before or after the ...