Engine very rough & noisy

[YEN96]

My engine seems more rough n noisy then before...
Wat could be problem ??

 

[Izso]

What engine, what oil, what did you do recently... so many questions

 

[YEN96]

Recently, I change the exhaust, found header there bolt leaking, so retread n fixed back.
But still, found engine noisy n rough then before.
Still leaking so, somewhere ???

 

[Izso]

Give more info bro. What car, what engine, etc

 

[YEN96]

Ek4, big V engine

 

[ehdrian]

If i'm not mistaken, b20 with toda cams, right?

 

[g4i8y0t]

What's your mileage?