Un-catted downpipe + OPF?

gorthol · 02-03-2024, 04:32 AM

Hi!

Do you know if installing an un-catted downpipe while keeping the OPF (euro particle filter that goes in the middle of the exhaust) would burn or break it or be bad for the engine or the turbo?

Thanks!

BmwDriverStockholm · 02-04-2024, 04:01 AM

Hey Gorthol! I tuned my car with a reputable shop
I have a 200-cell downpipe and Stock exhaust (with OPF) and I'm running Stage 2 custom tune. After 10000 km - all good, no problems, no bad codes.

My tuner said OPF is the restriction in my current tuning and if I want more power - I need exhaust and opf delete

02-03-2024, 04:32 AM	#1
gorthol Private First Class 64 Rep 141 Posts Drives: BMW 330e 2021 Join Date: Apr 2022 Location: Spain iTrader: (0) Garage List 2021 BMW 330e [0.00]	Un-catted downpipe + OPF? Hi! Do you know if installing an un-catted downpipe while keeping the OPF (euro particle filter that goes in the middle of the exhaust) would burn or break it or be bad for the engine or the turbo? Thanks!
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02-04-2024, 04:01 AM	#2
BmwDriverStockholm Private 46 Rep 63 Posts Drives: G20 330i M-sport sedan Join Date: Jul 2020 Location: Stockholm, Sweden iTrader: (0)	Hey Gorthol! I tuned my car with a reputable shop I have a 200-cell downpipe and Stock exhaust (with OPF) and I'm running Stage 2 custom tune. After 10000 km - all good, no problems, no bad codes. My tuner said OPF is the restriction in my current tuning and if I want more power - I need exhaust and opf delete
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