Ummmm, no definately not bare aluminium, the cam covers, timing cover, plenum, and plug covers all have the paint on them. Anyhoo, mines engine or no mines engine, shes pumping now, I *modified* the cat last night and what a difference..... Makes full boost alot earlier now, 1.2 bar by 4200 rpm, (in 1st) and some tuning with power fc should se it coming on even earlier. The car feels totally different, must have picked up 15-20atwkw and I cant' keep the smile off my face.