The reason I put a new engine in was because the last owner blew a piston, thats how I got it. I think the mod itself took the 1.8 block to its limits so dont tweek to much. I've got a scorpion full stainless system that was fabricated by power engineering, as for settings and boosts, I never got that into it. I just let the boys @ TOTD get on while I went to work. You can get a filter from Demon Tweeks as mine was wrecked, make me an offer. Where are you?