Just changed the spark plugs in the aero from the PFR6H-10 platinum jobbies to BCPR7ES-11 copper plugs. What a difference, the car seems so much happier now. I don't know if it's cause they're copper as opposed to platinum, colder, or just cause they're new plugs, but I'll definately be using these again. The engine just feels much smoother now, it was smooth before, but now it's like butter. I was initially worried about deviating from specs, but for $7 I had to at least try it. I highly recommend these plugs for those of you with aeros and ecu upgrades.