Heat wrapping downpipe/exhaust

The last time I did this on a car I went completely to town on it. Wrapped from the downpipe the whole way back to the tailpipe on a Mongoose system, flex joints the whole lot. I did no research into it, bought too much wrap, put it on dry and it was ok I suppose.

Now I'm looking at heatwrapping the new exhaust for the Impreza and I'm wondering how far is enough? Whats overkill and taking the mick? I've bought 10m of 2" wrap to do whatever.

For those who have done it before which of the following options do you think would make the most sense/benefit?

Wrap as far as the flex joint?



Wrap either side of the flex joint?



Or go to town and wrap as much as I can, flex joint and all?



The images above are just for examples. The actual system looks as below with flex joint after the system has tucked under the car and before resonator (?) part.

I always just wrap to just after the bottom bend on the downpipe that more than enough imo

Done same as dec when doing mine

Same as that no need for any more

The bulge after the flex joint - is that a sports cat or resonator?

If sports cat then wrap up to there (need to get heat into cat as quick as possible and want to wrap cat to keep heat in to ensure better operation to pass NCT for longer etc).

If not a cat then Dec, Barry and Tommy are spot on.

Wrap as far as just past bend as said is fine

Cool. Everyone seems to be of the same opinion so I'll go with that.

Thanks folks.

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