Project 1990 Eagle Talon TSI

[ViPER1313]

Few updates on the car

In the process of installing the CAI / 2g MAF setup I have had sitting around forever.



The filter and filter adapter will not fit, so I ordered a lower profile filter / adapter plate.

I also (attempted) a boost leak test. I am getting a lot of air out of the exhaust and past the rings. Not the PCV valve. Guess I need to do a leak down test. I pulled the plugs / did a compression test as well:



#1 appears to be running really lean, #4 is fouled and a gray / silver in color. I think the coil may be headed south (1 and 4 share a coil). May also explain the idle misfire. Plugs/ wires are new, compression appears (relatively) OK, I can’t find any vacuum leaks, injectors were cleaned last year. Any other ideas what else would cause a plug to look like this?



1/2/3 for comparison