Hi im new to owning a subaru been trying to search and learn about them and see that we pretty much need a tune for any modification so i thought id ask if i put in a k&n drop in filter a full 3inch catback exhaust on my 2012 wrx and reset the ecu by disconection the battery i would not a tune because im still using the stock airbox and all a exhaust does is frees up backpressure correct? If u could please verify me that would be awsome thanks
Okay thanks for the info pzr! I didnt do that when I put my CBE on. Could that cause my CEL to come on? Mine came on the other day when I was ideling in traffic. It kinda started to sputter and then came back to normal idle. In the process it caused the CEL to come on.