benefits of Wide Bore SS Exhaust ??

Moorhouse2 · Sep 3, 2021

Hi folks
Just about to replace the full exhaust on my S3 diesel, all standard apart from K&N air filter. Looking a the options, probably going to go with the stainless as the one that was on when I bought it had been replaced not that long before and has rusted through already to the point where it actually dropped off going over some rough fields. Is there any benefit to going for the slightly bigger bore 2" system (Rimmer Bros has one available LR100LB) over the standard one, or even potentially any downsides. Had issues with a couple of other classics over the years where too much deviation from standard diameter affected backpressure and flat spots (albeit in petrol cars) so thought I would ask those with more LR experience than myself before committing.

Thanks....Ian

marjon · Sep 3, 2021

My tuppence worth.

Go with SS by all means, stick with near as standard up front as it’s that bit that matters, diesel act same as petrol they are both 4 stroke.
Bigger/longer all make a difference, LR sized it stick close to it

Opening up the rear part will help make a bit more noise

.
Most tuned pipes is all done up the front end of the system, the back bit just lets it out.

The whole exhaust performance can be really complicated but don’t worry to much in a Series 3 standard is probably good as you can get

.

J

Turboman · Sep 3, 2021

Moorhouse2 said:
Hi folks
Just about to replace the full exhaust on my S3 diesel, all standard apart from K&N air filter. Looking a the options, probably going to go with the stainless as the one that was on when I bought it had been replaced not that long before and has rusted through already to the point where it actually dropped off going over some rough fields. Is there any benefit to going for the slightly bigger bore 2" system (Rimmer Bros has one available LR100LB) over the standard one, or even potentially any downsides. Had issues with a couple of other classics over the years where too much deviation from standard diameter affected backpressure and flat spots (albeit in petrol cars) so thought I would ask those with more LR experience than myself before committing.

Thanks....Ian

Personally, I would stay with standard. And I would also stay with mild steel.

With a complete system from the usual suspects coming in at under a hundred quid, with all rubbers, brackets, and fixings, and delivered, it isn't really a problem to change it every five years or so.

Moorhouse2 · Sep 5, 2021

Sounds like standard is the way to go then - thanks for confirming my suspicions. Can live without any extra noise for sure.

benefits of Wide Bore SS Exhaust ??

Moorhouse2

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marjon

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Turboman

Mab An Gov

Moorhouse2

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