Electronic boost controllers
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Junior Member
Joined: May 2003
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Electronic boost controllers
how do these things work? do they come with a mechanical part that attaches somewhere to the engine or do they just mess with the ecu?
also would having one require adjusting the bypass valve?
one last question which bypass valve is the best? It seems every shop wants to claim they have the greatest bpv and really they all seem the same except the Forge "race" one.
also would having one require adjusting the bypass valve?
one last question which bypass valve is the best? It seems every shop wants to claim they have the greatest bpv and really they all seem the same except the Forge "race" one.
AudiWorld Senior Member
Joined: Sep 2001
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EBC
EBC is composed of 2 main items.
The new Pressure valve Motor and the actual computer section.
the pressure valve motor is a regulator which reads manifold boost pressure, vs compressor housing pressure.
The computer basically makes the attempt to learn and adjust this motor.
the EBC works best on larger turbochargers that have lag. the EBC helps it spool up much faster vs the N75 valve. On the K03 or K04 you will notice that the turbo responds too sharply boost hits strong and comes off way to strong. modulating throttle will also be a handfull since the K03/K04 turbochargers start to spool as low as 2K-2800RPM the EBC will peg it to your set boost. the EBC will also cause momnetarily lean mixture. The smaller turbo's is forced to spool faster and sooner that the original fuel maps are off.
If you do plan on using a EBC get one that is adaptive this will help smoothen out the boost spikes and delivery. Other EBC's that don't incorporate fuzy logic and such can't adapt as the turbocharer wears out.
The new Pressure valve Motor and the actual computer section.
the pressure valve motor is a regulator which reads manifold boost pressure, vs compressor housing pressure.
The computer basically makes the attempt to learn and adjust this motor.
the EBC works best on larger turbochargers that have lag. the EBC helps it spool up much faster vs the N75 valve. On the K03 or K04 you will notice that the turbo responds too sharply boost hits strong and comes off way to strong. modulating throttle will also be a handfull since the K03/K04 turbochargers start to spool as low as 2K-2800RPM the EBC will peg it to your set boost. the EBC will also cause momnetarily lean mixture. The smaller turbo's is forced to spool faster and sooner that the original fuel maps are off.
If you do plan on using a EBC get one that is adaptive this will help smoothen out the boost spikes and delivery. Other EBC's that don't incorporate fuzy logic and such can't adapt as the turbocharer wears out.
Banned
Joined: Apr 2003
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Boost controllers do replace N75, but I've seen problems when
people install them, leave the N75 in the intake, electrically connected, but nothing plugging the two ports that normally go to the wastegate & turbo housing. Causes incorrect air flow reading from the MAF, under specific conditions, resulting in DTC's such as the famous "system too lean"........
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