Quote Originally Posted by JusteR View Post
For the cloud car NGK or nippondenso is prb better than bosch... and use champion plugs. I digress... I am trying an aftermarket MAP in my Aveo (speed density/manual transmission) fuel trim is +4 total at idle and BARO is 1-2inhg off. I am going to exchange it in another month or so, and then ck voltage drops before I finally go with the dealer one. pm me if you want to know the brand.
FWIW, I used NOTHING but the Stock Champion RC9YCs in my Cloud, because those plugs were DESIGNED for that Engine.