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

what rpm does your turbo spool up on a 1.8T 190bhp?

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by Beef, Nov 14, 2008.

  1. Beef

    Beef Member

    Joined:
    Mar 26, 2007
    Messages:
    74
    Likes Received:
    0
    Hi,

    I've just had both N75 valves replaced (whilst doing the cambelt) to see if it improves the power, but it doesn't seem to have helped much.

    Mine's flat until approx 2300rpm when you can feel the turbo kicking in. Is this normal?

    The car's a 1.8T quattro 2004 with the BEX 190 bhp engine. 75,000 on the clock.

    Many thanks in advance,


    Beef
     
  2. Advert Guest Advertisement


  3. aragorn

    aragorn "Stick a V8 in it!"
    Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    17,581
    Likes Received:
    642
    sounds about right to me. Its not a TDI... below about 3k i wouldnt expect it to do very much.
     
  4. evilscotsman

    evilscotsman Space Cowboy

    Joined:
    May 1, 2008
    Messages:
    1,350
    Likes Received:
    13
    mine starts to bite at 1800 rpm and pulls hard from 2k exactly, pulling even harder from 3500 onward.

    Maybe you have a small boost leak or a weak dv. There is only one N75 boost control valve, the other is a 710 diverter valve mate, totally different and do different jobs :)
     
  5. bubstar

    bubstar Member

    Joined:
    Jul 8, 2004
    Messages:
    550
    Likes Received:
    0
    X2 I'm with the Evil one :thumbsup:

    Even with my remap it's spooling by 1800rpm and pulling hard from 2k :racer:
     
  6. Beef

    Beef Member

    Joined:
    Mar 26, 2007
    Messages:
    74
    Likes Received:
    0
    Many thanks for the reply, you've given me some hope. Do you know where the boost valve and the diverter live on one of these engines?..I think I've had something completely different replaced (of which there were two).

    Thanks again,


    Beef
     
  7. justintime1026

    justintime1026 New Member

    Joined:
    Nov 17, 2008
    Messages:
    4
    Likes Received:
    0
    i'm with the 1.8T quattro as well.
    turbo kick in at ard 2400 rpm, should be normal.
    although i havent done anything on my car yet.
     
  8. evilscotsman

    evilscotsman Space Cowboy

    Joined:
    May 1, 2008
    Messages:
    1,350
    Likes Received:
    13
    the n75 boost control valve is somewhere near the front of the engine and connects to the DV which is down below the drivers headlight area, only accessible easily from underneath.

    Check vagparts for a picture of both N75 and N710 (DV) so you know what they look like.

    :)
     
  9. Beef

    Beef Member

    Joined:
    Mar 26, 2007
    Messages:
    74
    Likes Received:
    0
    Thanks for that, Vagparts is a handy site. I've definately had the N75 replaced, it's just Audi call it a solenoid change-over valve. The DV I have not and will now try. I'm sure when I bought the car the turbo kicked in just before 2000rpm, where it is at the moment it's just too sluggish. Thanks again.
     
  10. bubstar

    bubstar Member

    Joined:
    Jul 8, 2004
    Messages:
    550
    Likes Received:
    0

    The DV is under the right intercooler on a 190 1.8T...............
    [​IMG]

    The N75 is fitted into the rubber turbo intake pipe at the top.

    Here's a pic of my alloy Oettinger intake, you can see the N75 in the middle
    [​IMG]

    BUB
     
  11. quattrojames

    quattrojames Moderator
    Staff Member Moderator Audi A6 Audi Avant Owner Group

    Joined:
    Mar 28, 2008
    Messages:
    14,043
    Likes Received:
    562
    Bub your subframe is filthy! Show some pride man :tumble:
     
  12. bubstar

    bubstar Member

    Joined:
    Jul 8, 2004
    Messages:
    550
    Likes Received:
    0
    Sorry James, it was a 'before' photo! :blush:

    :laugh:
     
  13. quattrojames

    quattrojames Moderator
    Staff Member Moderator Audi A6 Audi Avant Owner Group

    Joined:
    Mar 28, 2008
    Messages:
    14,043
    Likes Received:
    562
    He he :salute:
     
  14. J7USS

    J7USS Shuddup Foooool!!

    Joined:
    Oct 25, 2006
    Messages:
    3,712
    Likes Received:
    34
    Shocking!!:whistle2:
     
  15. Beef

    Beef Member

    Joined:
    Mar 26, 2007
    Messages:
    74
    Likes Received:
    0
    Brilliant, very many thanks indeed.

    Beef
     

Share This Page