So I installed MHS stage 2 NPI N/A cams last week and today got a check engine light. Upon pulling the codes it turns out I have a lean condition in both banks (codes P0174 and P0171). I have never had the car tuned, so is this just due to the PCM being confused becuase of my new cams? Will it go away once the car is professionally tuned (scheduled for May 4th)?
It sounds like I also have a very small exhaust leak coming from the passenger side manifold. I'm fairly positive it's the joint between the midpipe and the passenger side manifold. Could the exhaust leak be responsible for the codes as well? I do plan on fixing the exhaust leak soon, but is it necessary before getting a tune?
Thanks!
It sounds like I also have a very small exhaust leak coming from the passenger side manifold. I'm fairly positive it's the joint between the midpipe and the passenger side manifold. Could the exhaust leak be responsible for the codes as well? I do plan on fixing the exhaust leak soon, but is it necessary before getting a tune?
Thanks!