DTAForum.com - a forum for the DTA ECU

Hi there new to this great forum.

I own a Renault 19 16v but have fitted a Megane 1 2.0 f7r 714 engine with the wasted spark single coil pack setup.

I believe the original tacho just ran off the negative coil from the remix unit on the R19 engine.

What do I need to do to get this working in conjunction with the new engine setup and the S40 pro Ecu I am about to wire in????

Any advice would be great, thanks in advance

Neil

You can either get a tacho adapter which is triggered from the ECU tacho out, or follow this guide:
http://www.clubgti.com/showthread.php?1 ... ight=tacho

Thanks so much for the reply, will give it a shot!

Looking at the diagram on your link, don’t the diodes affect the signal back to the ecu to fire the coils? If you see what I mean?

Have you even just tried the tacho output of the ecu direct to the rev counter ?

Good chance it will just work.

Spryboy1974 wrote:Looking at the diagram on your link, don’t the diodes affect the signal back to the ecu to fire the coils? If you see what I mean?

Not sure what you mean.
It works, I've used it on my Golf.

Not up and running yet so not had a chance to test the ecu output.
Am at the point of wiring where I want to keep it as neat as possible so was hoping to only do the once.!?

Neg side of coils go back to ecu yes?
Just thought if diodes in-line will affect it??
Or do I run 2 sets of leads coming off the neg coils 1 for ecu and other for tacho?

Sorry if I am being dumb just not done this before.

Two wires per coil signal.
One from ECU to coil, then spliced from coil to tacho. The diodes will be on this splice.

Perfect thank you Alex that’s what I had in my head!?