Downpipe and tune questions?

broski · 04-29-2024, 06:00 PM

Hello,
I currently have a 2018 BMW 330iX with approximately 87,000 miles on the motor, with the car being very well maintained. The car is basically stock aside from an Injen CAI. Would it be advisable to run the car with a catless DP and BM3 tune (Stage 1)? Would this create any complications with the motor given it has a bit of mileage on it?
Thanks.

co_440i · 04-30-2024, 12:43 PM

Why would you go catless but stay stage 1? If you go upgraded or catless DP, you should go stage 2 to properly take advantage of the hardware upgrade. Or, don't spend the money on the DP, which isn't necessary for stage 1 BM3.

But, for the B48, you *may* need to upgrade the chargepipe to be able to handle the boost from the tune.

04-29-2024, 06:00 PM	#1
broski Registered 0 Rep 1 Posts Drives: 2018 330i xDrive (F30) Join Date: Jan 2024 Location: United States iTrader: (0)	Downpipe and tune questions? Hello, I currently have a 2018 BMW 330iX with approximately 87,000 miles on the motor, with the car being very well maintained. The car is basically stock aside from an Injen CAI. Would it be advisable to run the car with a catless DP and BM3 tune (Stage 1)? Would this create any complications with the motor given it has a bit of mileage on it? Thanks.
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04-30-2024, 12:43 PM	#2
co_440i Private First Class 113 Rep 111 Posts Drives: 440i Join Date: May 2023 Location: Colorado iTrader: (0)	Why would you go catless but stay stage 1? If you go upgraded or catless DP, you should go stage 2 to properly take advantage of the hardware upgrade. Or, don't spend the money on the DP, which isn't necessary for stage 1 BM3. But, for the B48, you may need to upgrade the chargepipe to be able to handle the boost from the tune.
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