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N75 knowledge needed

Discussion in 'A4/S4 forum(B5 Chassis)' started by birch1983, Jun 25, 2013.

  1. birch1983
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    birch1983 Member

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    [Jun 25, 2013]
    I wondered if someone can give me any advice on this. They aren't a valves I'm really knowledgeable about but I've been told if you fit the correct one gains can be found.

    I've just been offered a ECS N75 Race Valve and wondered if they are worth the swap. I currently have the later variant which I think is an E. Prior to this I think I had the F variant but this was shot hence the change to the later spec one.

    Thoughts and opinions please guys.
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  3. Bradderz_1988
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    Bradderz_1988 Dont replace it, Upgrade it !!

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    [Jun 25, 2013]
    Stick with a standard N75 and get the car mapped with maybe some upgrades (injectors,maf,fmic etc) to achieve a proper gain !! Any other n75 just brings the boost in to harsh and doesnt show any significant gains overall !!
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  4. birch1983
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    birch1983 Member

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    [Jun 25, 2013]
    What injectors do people tend to go with and what is the MAF upgrade? May consider a change of plan. ;-)
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  5. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jun 25, 2013]
    those components need matched to the turbo you've chosen and power level your aiming for.
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  6. birch1983
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    birch1983 Member

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    [Jun 25, 2013]
    I'm thinking of heading down the ko3s route and aiming for about 230-250bhp. Really trying to get together a shopping list of bits I'd need.
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  7. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jun 25, 2013]
    K03s on an A4 doesnt really exist.

    What car do you have? Year? Engine?
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  8. AR-rkon
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    AR-rkon BZZZZ.... caffeine fueled electrical engineer Regional Rep

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    [Jun 26, 2013]
    I suppose you have the K03-073 from the B6 BEX lump, could be classed as a K03's'
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  9. birch1983
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    birch1983 Member

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    [Jun 26, 2013]
    It is a 98 AEB. Was advised I have a KO3 and that a KO3s would be a nice easy straight fit. :-/
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  10. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jun 26, 2013]
    Yeh, the problem is that the "K03s" isnt really that common on the A4. As rob says, the B6 190hp motor has it, but they're fairly rare. On the A3/Golf most cars were fitted with them after a certain year, so they're fairly ubiquitous, but the A3/Golf turbo doesnt fit the A4.

    IMHO your far better getting a hybrid built by beachbuggy, you can fit much larger parts inside the stock housings than you'd get with a K03s and you'll know its new.

    S3 or RS6 turbine and an RS4 compressor wheel and you should have a turbo capable of 250hp or so.

    C20LET injectors, 3 bar regulator and a VR6 MAF housing will go nicely with these parts.
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  11. birch1983
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    birch1983 Member

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    [Jun 26, 2013]
    Thanks for the heads up. I wasn't aware of the availability of the KO3s' so i may actually consider the option you mentioned. I've been looking at some Saab Red top injectors. Would I be correct in saying these would also work well?

    Is beachbuggy a resident on this forum?
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  12. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jun 26, 2013]
    yeh saabs are a little bigger but would also work.

    beachbuggy is a member, he also has a facebook page if you google for beach buggy turbos you'll find it.
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