I installed a K+N typhoon intake on my stock base model 08 Vibe 5 speed, only mods are some nice spark plugs to the motor.
I'm feeling it gasping for air in the 3400 to 5000 range. The pickup is great but it's starts to break up when floored. I cleaned the air filter and wondering if I could have possibly "caked" it with too much oil?
Any ideas of why it's stuttering when under full throttle?
Also it just threw a code, going to look into this later today.