Exhuast Leak question

[GST2G]

i was wondering what exactly is the effect you get from an exhaust leak?

 

[KFT0001]

If it's a leak pre turbo then you'll get increased turbo lag and noise. If it's a leak post turbo then you'll just get more noise, and possibly decreased turbo lag.

 

[psychlow]

Preturbo leaks can also jack with your O2 sensor readings, affecting your A/F mix at part throttle.