[ALVINSTDI]

engine runs and idles good but power output greatly reduced.
seems high backpressure ang "ping at the in the intake under load/high rev.
exhaust sounds like theres a break/hole in the exhaust piping but piping and seal are ok
what has failed?

 

[Seatman]

What about the short pipe that does the egr? It can burst and it'll take the exhaust away from the turbo so it wont spin it up the same, the other thing you could try if you can't find a leak is to disconnect the exhaust from the turbo and try it, it'll be noisey but it'll soon tell you if one of the exhaust boxes has collapsed inside.

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