Quote:
Originally Posted by Zeezu541
Hi guys I have an M140i and want to modify the oem exhaust by opening the backbox and either:
1: replacing the perforated pipe with a straight pipe
2. Welding the holes in the perforated pipe
Could anyone advise which is a better method
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From what I've seen on opening them I think it would be easier to replace the pipe as welding the holes around the back might be a pain. Saying that welding a new pipe in will have similar challenge although there may be enough space to get the torch around the back. Perhaps sleeving over the pipe would be simpler, ie slit a new pipe then put the seem on the opened side only.
I bought the MPE from Cotswold in the end and was very happy with it.
My m135i is going now and I couldn't get the MPE off. I've a feeling it's the same exhaust, my standard one is kicking around my garage if it's any interest for practise? I'm a fair way, but at least same country I think.