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Link g4+ xtreme Red(old) ecu intermittent start issue

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I have an e30 with m20 and link g4 extreme

I'm having issues to start the car and backfire but after 3 or 4 attempt, it start normally and idles great and revs normally.

When the car don't start I can see the trigger error counter going up and start counting. When the the car start 0 error sometimes 1 even when doing the full revrange to 8000rpm

My trigger scope looks a bit odd and gives me a sinusoidale shape .

I tried trigger filtering to level 4 and nothing have resolved my issue

I would suggest you post your configuration and the trigger scope on the Link Forum. https://forums.linkecu.com/forum/16-g4/ Those guys are great at decoding that and giving you good advice.

Is this a new problem (engine was starting and running successfully before), or is this a new installation?

It's a kind of new installation yeah, the wiring was done before on an other car with an m20 turbo engine we had and we just added one more igniter to make it direct spark ( not the issue, I tried switching back) and I'm doing the tune from the beginning but it's running okay we are juste waiting for trumpets to take it to the dyno

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