I've got a 97 WS6 T/A M6. It currently has about 45,000 miles on it. Last month I had the following done,
1)MAC headers 94-95 single cat style (jet hot coated)
2)MAC off-road pipe
3)02 sims
4)2 new delco 02 sensors
5)Borla cat-back
6)NGK TR55gp spark plugs (platinum version of the tr55)

It's been running great up until last sunday. The car hesitates pretty bad.
I realized that when I hit the gas from about a 20mph roll in third or even second , it felt like it was bogging down and didn't want to go. This only seems to happen once the car is warmed up. It also idles really rough at times. At low rpms it feels like it surges.

I've checked all the plug wires and they all seem fine (zero burnt). I have a set of Taylor OVC wires but haven't installed them yet.

With the above symptoms, does this sound like an opti problem? If so, the car is still under warranty so I won't have to pay for a new one.

Thanks in advance,
Tyler

P.S. Are there any good install guides for Taylor OVC wires?

 

Sounds like your EGR is sticking. Pull the vac line off and plug it and drive it for a while and see what happens.

When it's cool push it with your fingers and see if it feels rough.

You can clean it too with limited success.