I find that if I'm pushing higher than @ 90mph the exhaust starts to enter the cabin. I've quickly looked at the 'boot' seal and anything else that might seem obvious but haven't found any openings that might be allowing these fumes to enter the car.
Any thoughts on handling this issue other than slowing down?

wj

 

Wj, don't forget to tell us what year, car style coupes ? I suppose it must be a hardtop but don't want to guess.

 

Oops just saw through title 2005. I am so used to looking at signatures line.

 

sorry, 2005 convert

 

I would be looking at where the cats bolt onto the exhaust header. I found one of mine leaking, replaced the gasket and all is good.

 

Whenever I've had to split the exhaust system at the manifold to cat joint, I always use new manifold studs and nuts.

The studs seem to corrode badly and it's difficult to tighten the joint evenly re-using the old ones.

This may not be an issue in warmer and drier climates than here in the UK .......

Graham

 

thank you all, I'll check that out when I put her on stands once more...
wj

 

Is it exhaust smell entering or the smell of fuel? If it's fuel smelling, you might want to check the purge valve.

 

it's exhaust, far more pronounced while accelerating above 90mph as opposed to cruising at 100
more throttle at high speed = more fumes


wj