BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Turbo Tuner AFR graphs

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      09-01-2007, 10:54 PM   #1
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Turbo Tuner AFR graphs

Alright well i wanted to go more in depth with the Turbo Tuner to look at more info on it, some quick search lead to some AFR but no boost graphs. i collected a couple graphs that had a AFR on it. any open ideas are welcome, just trying to get some more accurate info out there.

would octane level effect A/F.. sorry for newb ?

and for anyone interested some info from split second about the turbo tuenr

1) Enhance Performance by up 50 ft-lbs and 40 horsepower at the

The Turbo Tuner is an embedded control solution that works seamlessly
with the stock ECU. It works on demand meaning that once the engine is
in boost and throttle position is increased, the boost is increased.
This increase in boost builds in a smooth, progressive fashion as the
throttle position is increased. The Turbo Tuner is not a boost
controller. The boost of the engine is always being controlled by the
stock ECU. Therefore, the quality of how boost builds and is managed is
completely preserved.

2) Easy to Use

The Turbo Tuner is a true plug-and-play solution that can be installed
or uninstalled in seconds by the end customer. This is a major step
forward in convenience compared to ECU re-flash or hard-wired piggyback
controller solutions. Both of those alternatives take considerably
longer to install. Unlike an ECU re-flash, after the Turbo Tuner is
removed, there is no trace that it was ever there. Unlike a hard-wired
piggyback, the stock wire harness is left untouched.

3) Maintain Stock Drivability

The Turbo Tuner does not change the characteristics of the engine in the
vacuum region. This assures that the drivability, fuel economy and
exhaust emissions are completely stock when driven with light throttle.
Every effort has been made to assure that the smooth and refined
character of the car is not adversely affected.

4) Preserve Reliability

Every aspect of the inherent protection features built into the stock
engine management system is preserved. In addition, the design features
a soft limit circuit that avoids overboost. This protects the engine
from potentially damaging boost spikes. There is also a temperature
compensation protection circuit that lowers boost at elevated under-hood

5) Highest Product Quality

The Turbo Tuner is built using surface mount technology and
state-of-the-art, pick-and-place automated assembly equipment for the
ultimate in quality assurance and reliability. The internal circuitry
utilizes precision components rated for 1% tolerance and specified for
operation over the industrial temperature range. OEM connector
components are used to assure reliable electrical connections.
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