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BMW 5-Series (G30) Forum Engine, Exhaust, Drivetrain, Tuning Modifications Boost Issues

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      07-04-2021, 10:51 AM   #1
MarcSigouin2017
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Boost Issues

Hello everyone,

I have a 2018 M550i, G30, N63R, Catless Downpipes, Cold Air Intake, Stage 1 Pure Turbo upgrade, 3.5 TMAP Sensor upgrades, Using E30 fuel. Using Bootmod 3 and a tuner friend.

1/4 mile times 11.5 to 11.6 - 119MPH / 120 MPH.

The car launches good, however looking at the Datalogs, I notice there is very little boost in gear 1, Gears 2,3,4 peak around 21 lbs of Boost, However, 5th gear cannot maintain Boost, it trickles down to 14lbs of boost.


I have attached a view of the log. Any help is greatly appreciated!
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      07-04-2021, 04:11 PM   #2
BimmerJ550
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Quote:
Originally Posted by MarcSigouin2017 View Post
Hello everyone,

I have a 2018 M550i, G30, N63R, Catless Downpipes, Cold Air Intake, Stage 1 Pure Turbo upgrade, 3.5 TMAP Sensor upgrades, Using E30 fuel. Using Bootmod 3 and a tuner friend.

1/4 mile times 11.5 to 11.6 - 119MPH / 120 MPH.

The car launches good, however looking at the Datalogs, I notice there is very little boost in gear 1, Gears 2,3,4 peak around 21 lbs of Boost, However, 5th gear cannot maintain Boost, it trickles down to 14lbs of boost.


I have attached a view of the log. Any help is greatly appreciated!
where can you get the tmap sensor and pure turbos?
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      07-05-2021, 10:35 AM   #3
MarcSigouin2017
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I got the TMAP sensors at Burger Tuning, and I got the turbos from a local shop, you can find them pretty much anywhere. Just an FYI, there is a new Stage 2 Pure Turbo which are available
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