I'm the owner of a Mazda Rx-8 07 I've had it for almost a year now and having some issues with my car right now. My car has lost a lot of power and it won't speed up fast I just change the coils , spark plugs and wires few weeks ago and still the same.. idk what to do now . I'm form MD and if anyone can help me that would be great..

 

Check out this sticky. It should get you started in finding what might be wrong.

https://www.rx8club.com/new-member-f...causes-249529/

From that thread:

Engine Power Loss

• chokes as revs increase
  • O2 sensor failure (too rich)
  • MAF failure
  • MAF disconnected
  • e-shaft sensor fouled
  • accessory belt fraying
• high end power loss (hard fuel cut)
  • Rev limit reached
• high end power loss (jerky and stumbling)
  • Ignition failure
  • fuel pressure loss
  • e-shaft sensor fouled
• high end power loss (smooth)
  • Catalytic converter clog
  • air filter clog
• low end power loss (smooth)
  • Engine compression loss
• low end power loss (stumbles)
  • Ignition failure
  • front O2 sensor failure
• revs slowly but smoothly
  • O2 sensor failure (too lean)
  • catalytic converter clog
  • air filter clog
• sudden power drop at a specific rpm
  • Intake valving actuation problem
• trouble getting to redline
  • Ignition failure
  • front O2 sensor failure
  • catalytic converter clog
  • air filter clog
  • e-shaft sensor fouled
  • fuel pressure loss
  • MAF failure