Catless downpipe questions

Dwaynos · 08-14-2018, 02:08 PM

Ive been looking into stage 2 bootmod3 and from what i understand stage2 is to be run with no cats. According to pro tuning freaks i am able to run cats on the decat tune as long as i don't do heavy tracking.

I am however contemplating getting a set of catless downpipes as they can be purchased very cheap in the UK but have been reading about the fuel smell and wastegate rattle. Are these problems as bad as people make out as i will stay clear of them if this is the case.

Thanks

M5BMW · 08-14-2018, 02:41 PM

Check your private messages mate.

Mr. M6 · 08-15-2018, 05:28 AM

yes smell is there at idle but no problem for me, and wastegate rattle at 1000-1300 rpm on my car...

08-14-2018, 02:08 PM	#1
Dwaynos Captain 380 Rep 948 Posts Drives: F10 M5 Monte Carlo Blue Join Date: May 2018 Location: UK iTrader: (0)	Catless downpipe questions Ive been looking into stage 2 bootmod3 and from what i understand stage2 is to be run with no cats. According to pro tuning freaks i am able to run cats on the decat tune as long as i don't do heavy tracking. I am however contemplating getting a set of catless downpipes as they can be purchased very cheap in the UK but have been reading about the fuel smell and wastegate rattle. Are these problems as bad as people make out as i will stay clear of them if this is the case. Thanks
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08-14-2018, 02:41 PM	#2
M5BMW Enlisted Member 27 Rep 46 Posts Drives: M5 F10 Join Date: Jan 2018 Location: Europe iTrader: (0)	Check your private messages mate.
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08-15-2018, 05:28 AM	#3
Mr. M6 Lieutenant 149 Rep 477 Posts Drives: M6 Join Date: Jan 2018 Location: Bahrain iTrader: (0) Garage List 2014 BMW M6 F06 [9.25]	yes smell is there at idle but no problem for me, and wastegate rattle at 1000-1300 rpm on my car... __________________
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