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MBC series link it or parallel ?

Discussion in 'A3/S3 Forum (8L Chassis)' started by s3dave, May 26, 2010.

  1. s3dave
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    s3dave TFSI Hybrid

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    just going to have a play, what have you guys done who have fitted these ?

    series set up with the n75 or a parallel set up, or even mbc solo? (with n75 still electrically connected)
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  2. Welly
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    Welly VX220 SC Driver :)

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    Personally, in solo, blocking off the N75 outlet on the TIP. BUT - it depends on what result you are after.

    Running in series will limit boost spikes, but leave the N75 in control.
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    As Welly said... I bypassed the N75 leaving it electrically connected and use the MBC as the boost control... just keep it wound low to start with...

    If using the Forge UNOS then use the lighter spring to start with...

    <tuffty/>
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  4. s3dave
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    s3dave TFSI Hybrid

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    cheers lads, have you found them jerky part throttle?
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  5. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    Found mine to be pretty smooth but generally change up before too much boost is built up... If you have a wideband lambda the ECU can compensate, not sure about cars without...

    I actually find the car is much smoother and more responsive part throttle in town traffic than it was on the N75...

    <tuffty/>
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  6. s3dave
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    s3dave TFSI Hybrid

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    interesting i will see how i get on.. did it on my old golf and the difference was amazing, did start to crack pretty loud after gear changes
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