Need opinion on downpipes

Shikari · 05-08-2021, 03:15 PM

Hey guys i want to upgrade my downpipes is there any out there with witch i can upgrade without having to worry about emissions

HyeM3 · 05-09-2021, 11:19 AM

The stock downpipes are 400 cell and aren't that restrictive. There's none out there that will allow you to pass emissions legally but if there were they would basically have about the same flow as the stock ones so they wouldn't be worth the upgrade. There are aftermarket catted ones out there but they all throw codes so you won't be able to pass emissions

05-08-2021, 03:15 PM	#1
Shikari Private First Class 167 Rep 146 Posts Drives: Bmw m4 Join Date: Feb 2021 Location: California iTrader: (0)	Need opinion on downpipes Hey guys i want to upgrade my downpipes is there any out there with witch i can upgrade without having to worry about emissions
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05-09-2021, 11:19 AM	#2
HyeM3 Lieutenant 465 Rep 502 Posts Drives: BMW M3 Join Date: Sep 2019 Location: California iTrader: (1)	The stock downpipes are 400 cell and aren't that restrictive. There's none out there that will allow you to pass emissions legally but if there were they would basically have about the same flow as the stock ones so they wouldn't be worth the upgrade. There are aftermarket catted ones out there but they all throw codes so you won't be able to pass emissions
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