I have a DIYPNP built by brain.
The seq inj was working fine with my old injectors.
I swapped out injectors and the car will only start if it is set to untimed.

Is there something else I have to change to make rc550 work w sequential inj?
Old injectors were green top supra.

 

that's odd. it shouldn't make a difference. what clyinders aren't firing? even in untimmed if additonal drivers are on it should be using the extra seq drivers. otherwise only 2 should be firing.

 

How do I find out which cylinders are not firing?
Injectors are kind of hidden under intake manifold so I can get a volt meter on them.

My original msq has seq and my car used to run somewhat decent on it.
Now it won't start the car so I'm using a map I got from track dog.
I noticed TDR's map is using untimed. When I change it to seq, it will crank but not start.