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Message: [QUOTE="revolvingsteel, post: 408614, member: 992"] I recently purchased an NVK4 pcm for my early 99 to get Gearhead or Beans tunes because both Matt and Jonathan recommended I get a DPC-422 pcm. Well I installed it last night and every thing works but there are two things I have a question on. First, when I let off the throttle it really "chug-chug-chugs" alot worse than my XLE8 ever did. Whats up with that? Second, its obvious the pcm has had a chip on it but it seems as though it might be flashed with a tune. There is some decent power and it will smoke when I get on it. My early 99 pcm could never dream of doing this when stock. Can the tuners overwrite it if its tuned/flashed? Is it safe? Thanks for the time, Dan [/QUOTE]

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