boosted16

So the car runs after a 1.6 - 1.8 Swap but its a little temperamental when cold and has some hot running problems.

1. It wont stay idling at cold.
2. @ 2100 RPM with light throttle it cuts out, But rev's fine past that.


Any Suggestions?

Thanks

miata2fast

iTrader: (2)

I would suggest perhaps a little more information.

Stock ecu? MS?

boosted16

Stock ECU, Stock Headers, Custom Intake Pipe. but its the same length and size. Also running the AFM

shuiend

iTrader: (24)

Where are all your grounds?

boosted16

Working on it over the weekend I located a vacuum leak so the cold and hot running problem is gone but the 2100 rpm cut out is still persistent. It's like it's a launch control I.e looses spark. (I have not checked this)

All the grounds are in the stock locations to my knowledge.