1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

N75 knowledge needed

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

  1. birch1983
    Offline

    birch1983 Member

    Joined:
    Mar 30, 2012
    Messages:
    43
    Likes Received:
    4
    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.
    #1
  2. Bradderz_1988
    Offline

    Bradderz_1988 Dont replace it, Upgrade it !!

    Joined:
    Aug 19, 2010
    Messages:
    3,211
    Likes Received:
    105
    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 !!
    #2
  3. birch1983
    Offline

    birch1983 Member

    Joined:
    Mar 30, 2012
    Messages:
    43
    Likes Received:
    4
    What injectors do people tend to go with and what is the MAF upgrade? May consider a change of plan. ;-)
    #3
  4. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator

    Joined:
    Jan 30, 2008
    Messages:
    15,541
    Likes Received:
    303
    those components need matched to the turbo you've chosen and power level your aiming for.
    #4
  5. birch1983
    Offline

    birch1983 Member

    Joined:
    Mar 30, 2012
    Messages:
    43
    Likes Received:
    4
    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.
    #5
  6. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator

    Joined:
    Jan 30, 2008
    Messages:
    15,541
    Likes Received:
    303
    K03s on an A4 doesnt really exist.

    What car do you have? Year? Engine?
    #6
  7. Arrkon
    Offline

    Arrkon Midlands regional Moderator Regional Rep

    Joined:
    Oct 8, 2010
    Messages:
    1,696
    Likes Received:
    75
    I suppose you have the K03-073 from the B6 BEX lump, could be classed as a K03's'
    #7
  8. birch1983
    Offline

    birch1983 Member

    Joined:
    Mar 30, 2012
    Messages:
    43
    Likes Received:
    4
    It is a 98 AEB. Was advised I have a KO3 and that a KO3s would be a nice easy straight fit. :-/
    #8
  9. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator

    Joined:
    Jan 30, 2008
    Messages:
    15,541
    Likes Received:
    303
    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.
    #9
  10. birch1983
    Offline

    birch1983 Member

    Joined:
    Mar 30, 2012
    Messages:
    43
    Likes Received:
    4
    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?
    #10
  11. aragorn
    Offline

    aragorn "Stick a V8 in it!" Staff Member Moderator

    Joined:
    Jan 30, 2008
    Messages:
    15,541
    Likes Received:
    303
    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.
    #11

Share This Page