interested in your feed back

[Neil Harvey]

We did this kit several years ago and never pushed. Wil recent questions about Ignition systems I thought I would post this to get some feed back. I do not have a final cost as of today as I am checking on price increases since we did this over 10 years ago. I have given my best estimated cost and will follow up with a final hard number as soon as I have all the current component costs.

I'm interested in any feed back good or bad.

Porsche 911 2V Distributor controlled Ignition Kit with Knock control.

This kit can be either single or dual spark plug. The CDI model determines this. The Dual channel CDI unit allows two Ignition coils to be driven with no loss of Ignition power. The Ignition is fully programmable 3D (typically RPM v MAP) by the user with multiple Trims all user defined with sensor options that can be added. The supplied harness will have all wires included. This kit provides an on board logging feature with 250 logging parameters and comes with 512MB memory.

These kits are configured to use the stock Ignition distributor with a minor mod to lock out the stock advance control.

The main Ignition table can be configured with either manifold pressure or throttle angle. An added table can be configured by the user with any Analog input used as a correction. As an example the main table could have RPM and TPS as its axis and a MAP correction. Typically Ignition tables can be configured just with MAP as the change in Ignition values does not have to be as fast as a fuel value needs to be.
Two RPM limit control tables can be configured. One with RPM and another with ECT as an example. You could use Oil pressure or any other analog input., User defined again.

This system can also control an electrical Oil cooling fan, Fuel Pump, Shift Light, and Tach. This is only an Ignition control unit so there are some limitations.

Functions included are:
2 Ignition drives for up to two Ignition Coils
3 Analog inputs, MAP, TPS, Oil Press, user defined
2 Temp inputs, either Eng temp, Oil Temp, or IAT, user defined
4 Auxiliary Inputs, Tach, Shift Light, Fan, Spare
1 Knock channel
On board trigger scope
On board logging
512MB Logging memory

Base Unit $ TBD Dual channel, est $ 2400.00 Final cost will be determined also by number of Ignition channels.

I will have final costs very soon as the beta harness is under construction. This is a very comprehensive Ignition only system. At any future stage the included ECU can be user reconfigured to run multi coil wasted spark and group fueling. With no loss of Ignition power to each coil, and all of the added features that come with the system, especially the engine protection features and logging, this becomes a cost effective kit that is fully featured and comparable with other systems that required dual Ignition units.

Ignition kit includes the following
ECU with a pre programmed base program. Tuning Software is free.
Dual or single channel CDI
Dual or single Ignition Coils
MAP sensor (std)
Terminated Harness

Options
Eng Temp sensor
Oil Temp sensor
IAT Temp sensor
Oil Pres sensor
Knock sensor

[reclino]

Knock discrimination, seems to be the tricky bit here. I hope your consulting with a true subject matter expert on this. I purchased a J&S ignition just to get knock control.

[Neil Harvey]

Have been dealing with detonation for approx 30 years. In that time I have lost some and saved many engines. I hope I have a good handle on what knock is and how to control it.

The next engine on the dyno will prove me either wrong or right. But I can always be taught some knew trick My dog can't though.

Thanks for the heads up.

[pkabush]

My plan for my next turbo build is Electromotive ignition with a J&S box but this sounds like a really interesting option. Thanks for the continued developments for our old sleds.

[Neil Harvey]

Originally Posted by pkabush

My plan for my next turbo build is Electromotive ignition with a J&S box but this sounds like a really interesting option. Thanks for the continued developments for our old sleds.

There are other good systems available for sure. It all comes down to features and if you get all required control in one unit. My expectation is to offer a dual CDI Ignition system with Knock control, and other features, for around the same cost as two CDI units currently available from other vendors.

The exact same dual channel CDI can be driven directly from the Distributor but requires a hall input. We are working on a replacement sensor for those Distributors with reluctor. I know of drop in hall systems but these are not very reliable nor accurate.

So its clear, the ECU that I have included has 4 Fuel drives and 4 Ignition drives, so if you wanted to remove the Distributor and go wasted spark and non sequential fuel you can. A crank trigger should be fitted or you could trigger from the Distributor but you can possibly add some small amount of additional error with the Distributor gear lash.

The purpose of this is to offer a dual Ignition system (twin plug) for those wanting to retain the Distributor, with all the added features "for free". It will allow future EFI upgrade but there are more comprehensive ECU's if full EFI is wanted.