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Discussion Starter #1
I'd like to get clarification on the differences between a "Stepping Motor" and "Switching solenoids" in terms of building boost.

What are the differences in how they work and what are the benefits or drawbacks of either?


Just taking a stab.....

From what I understand so far, a Stepping motor will keep the wastgate shut until the desired boost is achieved...thus allowing boost to ramp up "as fast as possible" to desired level. At which point, the stepping motor then opens the wastegate.

A switching solenoid rapidly opens/closes the wastgate to control boost...therefore, slowing down the ramp up to boost/power.

Is this correct?


I'm trying to get max. power delivery up to a desired boost level.

Thanks!

ps. Trying to decide between my Blitz DSBC or EVC IV Silver controllers??


Any opinions???


Thanks,

Maury

98 tt 6spd BPU++
97 tt Auto BPU++
 

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You could be right but on the Blitz units you can set the gain, i.e. how fast the boost should rise, so in practice there shouldn't be too much difference.

Flavio
 

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Discussion Starter #3
One thing I'm not sure about yet is the Fuzzy logic control in the EVC IV.

Also, exactly how does the offset (fuzzy logic as well) works vs. the DSBC gain control? In both sequential and TTC modes?

Anyone have any insight to the longer term testing and tuning of the EVC IV???

Thanks,

Maury
 
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