Thanks guys

 

Take it to the dealer/ a mechanic. I think that's a no brainer.

 

Okay, if it was losing power, that is highly suggestive that it is not an electrical problem (battery/alternator) or obviously a starter problem. Perhaps a fuel system problem? Did it feel at all like an engine running out of gas? (In and out power loss, with dwindling power, etc?)

 

I don't know. "Losing power" could mean damaged cylinders or loss of compression.

Any CEL?

 

That is quite possible, but I was going for the (potentially) easier fix. It seems slightly odd that he would have that bad of a problem unless he is running some pretty intense mods, etc. I'd check fuel system and perhaps a compression/leak down test.

Edit: I'm attempting to come up with alternative ideas to compression failure... is it possible something is completely blocking your air intake?

 

also there are no CEL's

 

ouch. is the car under warranty?

i feel your pain. I think my diff is shot.

good luck, and keep us posted.

 

Overrev?

 

A mechanical over rev is the primary cause for bent valves.

I wanted to post this earlier in the thread