STFT code, fuel mileage getting worse

[scoot18]

Not 100% Sure what elbows you are talking about so don't want to speculate. Are you talking about the problem being at the flange where cat manifolds meet exhaust manifold in relation to weld?? Only real issues I've seen so far with cat manifolds from indmar was in relation to their double wall tubing. indmar most likely figured it out as they make these cat manifolds in house.
Port side access is way better.

Just updated the other thread with pictures of my elbow/cat, it is all the same part. The issue is the flange that mates to the manifold, where the inner and out tubes and flange all get welded together. I did see the new one and there is a hefty weld bead around the inner area of the flange that on this one there is no weld on the inside, just around the outer perimeter of the tube at the flange. Try this link to that thread, hopefully it will work. http://www.tigeowners.com/forum/show...w-error-code-!

[scoot18]

Here are pictures I got of the CATS last weekend when they got replaced, you can clearly see the difference in the weld and how they have improved the joint of the inner & outer tubes to the flange.

Old way
7648.jpg
New way
7650.jpg

[dom w. forte]

We have had problems where the inner double wall is cracking by the cat internal brick , water then runs down onto the o2 sensor .