Originally posted by bimmerteck
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Anyway OP like I said before get the head pressure tested and resurfaced while its at the machine shop. And get working on your tuning. 13afr is on the lean side you'll wanna be around the 12s. And get some det cans, on high performance car you shouldn't be hearing it by ear. If your hearing it while your driving then that certainly explains your original question.
Also start working on the timing maps. And post it on here or even e30tech so the more experienced members such as nando can review it for you and explain where you went right and wrong. This all part of the fun of turboing your m20. Learning and gaining experience for future projects.
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