09-03-2016, 07:07 PM | #1 |
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MHD tune on stock downpipes
Hi Guys
Just looking for some advice on what MHD tune to run on stock 1M downpipes. I am thinking 'Stage 2' is ok as this is for the 135i with upgraded downpipes. The other question is how 'free flowing' are the stock 1M downpipes? |
09-04-2016, 01:34 AM | #2 |
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The 1m Downpipes are the same as any aftermarket catted downpipes
From memory you will be limited by these to around 274rwk at best on unleaded fuel depending on the dyno used Take these out and leave the mid cats in and you will get around mid 280 rwk with supporting mods |
Appreciate
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