I picked up an X recently and going through the car for stuff I didn’t notice during purchase…

From the 3port Grimmspeed ebc port number 1 instead of venting to air it was hooked up to the bov. The manifold vacuum line was ran into the intake.I redid the lines correctly. Now the bov is working like
it should.

I assume it was setup like that for quite sometime. But is there anything I should look for or into for any potential problems that they may have caused?

 

Hmm weird, port 1 is typically routed back to the intake tube. Edit: Re-read. I wonder now if your tune is gonna be off, basically having a boost leak previously, now you wont.

 

The boost peaks close to what is on the dyno sheet. The AFR is actually better with the vacuum line hooked up correctly. Prior at WOT it would be floating around 11.9-12.2. Now it is consistent at 11.8. Driveability seems to be better as partial throttle in 5th gear doesn't buck since I guess it's trying to close the bov with the pressure from port 1 to soon.

 

You can grab the whole factory service manual for free here:
https://evoscan.com/tech-articles/?e...=1&eeListID=1&

Invaluable resource for maintenance/repair/diagnosis or if you just want to learn about the car.