Originally Posted by bewhitey

Woops, I didn't know that about Seb. Harvey at the boost creep is the primary tuner. I am running stock pulley / impeller, 8psi. I want to keep it on the conservative side for now. Harvey still has more tune work to do but went on vacation and wanted me to drive it for a couple weeks. It has been doing some weird power loss stuff, all codes it is throwing are MAF related. Pulled them out and cleaned them, cleared the codes. Now I just need to drive it some more to see if it keeps happening. I think I am going to buy the stock coolant expansion tank. From some pics on here it looks like it is danger close to the pulleys but still fits