hi guys, Working on my cousin car, and had little problems with the turbo, so he order a new one.

Now, I put stock injectors, map, header and put the j1 switch to off. So back to stock p30.

Question is: Do I have to resold the J12 or she works like this?

 

You don't have to touch j12

 

Thanks mtber!!!!

 

mtber, having a issue, when disconnect the MAP sensor, the CEL not pop ON and not want to rev., connect it and no rev it chokes.

Can you give me a hint?

 

Make sure you don't have the TPS and Map sensor plugs mixed up.
The tps plug will have a red middle signal wire on it.

 

all j12 does is lock and unlock datalogging capability. it wont keep the ecu from going through its normal routine

 

codes don't always pop up right away, sometimes you have to drive it a little for the ECU to process an error. Also make sure the engine light isn't burned out or been removed, I've been seeing that far too often lately.