P0171 with these mods
Thread Starter
Senior Member
Joined: 10-31-07
Posts: 2,765
Likes: 1
From: Houston, TX
P0171 with these mods
I was throwing a P0171 before with my bad tune from a local shop but I recently got GM to flash me back to stock and it went away. It's been almost 2 weeks now and no problems until just threw a P0171 today. Mods are custom cold air intake, CA v1 header, stock downpipe, megan catback
Thread
Thread Starter
Forum
Replies
Last Post