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I recently picked up the rest of what was needed to drop to a 3.5 including a zzp pcm. Car started right away and got over 100 miles before running into an issue. Car felt like it jerked and threw a p0101 code. Car would also drop to 500 rpm when letting off gas and stall if I didn't keep on the gas. Boost gauge would show boost regardless of how much gas you gave and even at idle it would show boost. Replaced MAF sensor and had same issue same code.. Emailed zzp and they said its probably the MAP sensor and it could cause that same code and cause the wierd boost readings. Replaced MAP sensor and made it about 15 miles until it happened again. Car drives good gets up good but drops in rpm and wants to die. Boost gauge showing over half full at idle. Did find beginning of crack in t fitting at intake manifold leading to MAP sensor so I will replace that. Anything else I should take a look at before assuming its the PCM causing these issues? Thanks