N54 Stage 1 MHD 19 PSI???

SeanS97 · 04-24-2023, 10:42 AM

I have stage 1 MHD installed on my N54.

It seems to consistently be hitting around 19 psi of boost.

I thought stage 1 on MHD targets around 14 to 16 psi?

Whats wrong with my tune?

Is this overboosting caused by faulty wastegates?

Thanks

whyzee125 · 04-24-2023, 11:10 AM

Is your car otherwise stock? Are your turbos original? Get a log in 3rd gear and see if you're overshooting your target.

Smokey33 · 05-05-2023, 01:09 PM

Stage 1 is around 14psi. 19 psi is wayyy to high. Are you sure? Are you data logging?

04-24-2023, 10:42 AM	#1
SeanS97 Registered 0 Rep 3 Posts Drives: BMW 335i N54 2009 Join Date: Apr 2023 Location: Canterbury, Kent, United Kingdom iTrader: (0)	N54 Stage 1 MHD 19 PSI??? I have stage 1 MHD installed on my N54. It seems to consistently be hitting around 19 psi of boost. I thought stage 1 on MHD targets around 14 to 16 psi? Whats wrong with my tune? Is this overboosting caused by faulty wastegates? Thanks
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04-24-2023, 11:10 AM	#2
whyzee125 Brigadier General 1665 Rep 3,629 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	Is your car otherwise stock? Are your turbos original? Get a log in 3rd gear and see if you're overshooting your target.
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05-05-2023, 01:09 PM	#3
Smokey33 First Lieutenant 70 Rep 379 Posts Drives: 2009 Black 335i DCT FBO Join Date: Apr 2017 Location: Stafford UK iTrader: (0)	Stage 1 is around 14psi. 19 psi is wayyy to high. Are you sure? Are you data logging?
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