N54Tech.com - International Turbo Racing Discussion
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andrew.g35.04@gmail.com andrew.g35.04@gmail.com is offline
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Default Can someone look over my data logs for me would be greately appreciated - 12-30-2016, 04:13 PM

2009 335i
Dci
*********
Intercooler
Chargepipe bov
Jb4+mhd e85 bef
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File Type: csv 2016-12-30 15_58_37.csv (10.7 KB, 117 views)


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Russell @ BMS's Avatar
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Default 12-30-2016, 06:07 PM

You have an N54 and not a N55 correct? OEM N54 usually can maintain about 15 psi at high RPM so I do not know why your boost is falling off so much at high RPM.
It is unreasonable to expect the OEM turbo's to maintain 18 PSI at high RPM.


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andrew.g35.04@gmail.com andrew.g35.04@gmail.com is offline
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Default 12-30-2016, 06:31 PM

It's an n54 and I'm running the jb4 with the mhd back end flash any reason it could be dropping off like that I'm new to the platform!


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Default 12-30-2016, 06:41 PM

Could be a boost leak.... insufficient vacuum in the vacuum storage canisters.... bad vacuum solenoid valve.

I would get a vacuum gauge and Tee it into the WG vacuum line.
You should see about 22 to 26 In Hg when at full throttle and high RPM.


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andrew.g35.04@gmail.com andrew.g35.04@gmail.com is offline
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Default 12-30-2016, 07:09 PM

Thank you guess I'll start checking all the above!


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Default 12-30-2016, 07:44 PM

Can you guys take a look at my log? Should my throttle value be as wavy as it is? This is on map 1 but also occurs on map 5.

Thanks
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Default 01-01-2017, 07:04 PM

Quote:
Originally Posted by Russell @ BMS
Could be a boost leak.... insufficient vacuum in the vacuum storage canisters.... bad vacuum solenoid valve.

I would get a vacuum gauge and Tee it into the WG vacuum line.
You should see about 22 to 26 In Hg when at full throttle and high RPM.
So I tested what you said and everything checked out anything else it could be?


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Default 01-02-2017, 06:30 PM

Quote:
Originally Posted by Ewilly096
Can you guys take a look at my log? Should my throttle value be as wavy as it is? This is on map 1 but also occurs on map 5.

Thanks

You'll need to start your own thread and take a proper 3rd gear log for any input.



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Default 01-02-2017, 06:31 PM

Quote:
Originally Posted by andrew.g35.04@gmail.com
So I tested what you said and everything checked out anything else it could be?
I'd agree....boost leak or turbos.



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