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vtec engagement
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  1. Engine Building
    Hi guys I have a recently built k20a2, since the rebuild the car lacks power, it crosses over into vtec, but I feel no power gain and its asif the car hits a wall once it reaches 7k rpm. You also get a strange (backfire?) Noise from the engine bay when it reaches 7k. The crossover is audible...
  2. General K-series related talk
    Hi all, first post not sure if this is the correct area. So I have recently rebuilt my k20. After the build I had a code for an 02 sensor, replaced sensor, all ok code went away. First test run of the car shown that it wont engage vtec, it gets past the vtec engagement rpm and just revs out...
  3. All Motor K series Technical Discussion
    Whats up K20 Fam! i recently took my car to get dyno (em2 k20a2 kpro) and the tech came out and said vtec was not engaging so they check oil pressure & vtec signal and all as good. so they decided to pull cams to check pins to make sure the bc cams where installed right...everything so far...
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