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Thread: What does the Rear BCS actually do???

  
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    kev007's Avatar
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    What does the Rear BCS actually do???

    Why does the z20let have 2 boost solenods???

    and

    what does the Rear Bcs actually do?
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    Drives a Fiat Bravo 165 sport....

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    Bleeds boost on part throttle.
    Fastest, Most Powerful & Only Mag Featured Astra In The AOC Cumbrian Region

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    It controlls the standard dump valve which does quite a few things including the standard anti lag setup, helps with boost controll and the obvious 1 realease boost when lifting off the throttle to stop compressor stall (what a dump valve is meant to do lol)

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    mib gsi turbo's Avatar
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    think the rear 1 can be bypassed and it runns smoother takes the hesitation out.
    use to drive arden blue gsi turbo.now sold
    239 bhp and 244 lb/ft
    bought astra cdti xp 150

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    Quote Originally Posted by mib gsi turbo View Post
    think the rear 1 can be bypassed and it runns smoother takes the hesitation out.
    This is done by what, the 1 way valve trick?

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    Quote Originally Posted by nyzrox View Post
    This is done by what, the 1 way valve trick?
    No, by running the original dump valve off the fuel pressure regulator like you would an aftermarket dump valve.
    Black Astra Coupe Turbo

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    Here you go guys (diagram says it all) >> http://www.astraownersclub.com/vb/sh...?t=8368&page=7
    FORMERLY WAVEYBLUEWATER

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    Quote Originally Posted by Waveybluewater View Post
    Here you go guys (diagram says it all) >> http://www.astraownersclub.com/vb/sh...?t=8368&page=7
    That's the thread I read through before doing mine! Still wasn't entirely sure if it was the rear BCS of the vacuum box that I was running it off! It's straight down from the throttle body, where the pipe to the OE dump valve went so am assuming it's right - the car came with a DV
    Black Astra Coupe Turbo

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    Think am going to block of my rear BCS tonight...
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    Drives a Fiat Bravo 165 sport....

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    Ok guys i have had a dv26 fitted to the car before i bought it. There is no vac pipe coming from the oe dumpvalue from the turbo and my dv26 is using the rear boost solenoid.

    Tonight i have relocated my dv26 to the fuel pressure regulator and were my dv was plumbed in i have blanked it off. Is that right??? As am not getting that much sound from my bailays now, but the car feels better and get some chatter..

    Help would be good.

    Kev
    Where are the Cumbrian Members??
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    Drives a Fiat Bravo 165 sport....

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