TTL level ignition drivers

[Preston Schipper]

For those teams that have ECU's with TTL level igntion drivers what coils or coil/ignition driver combo's do you use. I'm looking at an ECU that has TTL level outputs. It'd be nice to have a COP so keep the system looking clean although seems most factory COP's are going to be bigger than the stock honda ones we use currently.

[Preston Schipper]

For those teams that have ECU's with TTL level igntion drivers what coils or coil/ignition driver combo's do you use. I'm looking at an ECU that has TTL level outputs. It'd be nice to have a COP so keep the system looking clean although seems most factory COP's are going to be bigger than the stock honda ones we use currently.

[Electro]

We used an AEM system last year, with our own ignition driver using IGBT's (high current, spike of 50 amp, steady state of about 5). I don't remember if it was truly TTL level, but it's a mute point really. If you're interested I could find out what exact ones they were.

We used the stock COP's from the F4i

Electro

[Dan G]

The megasquirt standard are VB921s. They have built in current limiting. Pretty robust little chips.

[Preston Schipper]

So you just had a small circuit board with the IGBT's on it between the ECU and coils? I was thinking of that but hoping maybe someone had found a coil with it all built in that would still fit in the tiny honda head.

[BeaverGuy]

I believe that the Chrysler 300M has COP units with a built in igniter. I might be mistaken but I believe that is the case. I think I saw this on the AEM forums in a discusion of COP units being used on various non-stock Car applications. The Honda bike units were amongst the favorite choice being used on a variety of different cars.