Dismiss Notice
Hi Guest, stickers are available from our online store.

What's best to do for a 170 fr tdi

Discussion in 'Engine Discussion and Tuning (archive)' started by Paul Smith, Sep 19, 2018.

  1. Paul Smith

    Paul Smith Active Member

    Joined:
    Sep 10, 2018
    Messages:
    217
    Likes Received:
    19
    Hi

    I'm new to the Leon world and diesels to be honest. What's the best mods to do to bring some power to the old girl?

    Better turbo?
    Fmic?
    Injectors?
    Air?
    Zorsts?
    Head work?
    Cams?

    Any preference?
     
  2. Legojon

    Legojon I only wanted a remap
    Moderator

    Joined:
    Jul 7, 2015
    Messages:
    4,463
    Likes Received:
    2,241
    My first question would be, what year of Leon is it? And does it have a dpf fitted? If so, that will be the biggest choke point (literally).
     
  3. Paul Smith

    Paul Smith Active Member

    Joined:
    Sep 10, 2018
    Messages:
    217
    Likes Received:
    19
    Sorry, that would have helped lol. It's a 2006 mk2, the previous owner said the dpf and egr have been removed. As there's no management light on I can only assume they have been switched off on the ecu
     
  4. Legojon

    Legojon I only wanted a remap
    Moderator

    Joined:
    Jul 7, 2015
    Messages:
    4,463
    Likes Received:
    2,241
    Hmm, usually deleting the egr/dpf warning lights is part of a Stage 2 software upgrade. Do you know if it's been remapped? And who by? Does it still have the factory air intake?
     
  5. Paul Smith

    Paul Smith Active Member

    Joined:
    Sep 10, 2018
    Messages:
    217
    Likes Received:
    19
    Not sure if it's remapped, it certainly doesn't set the world alight when i floor it. Standard air in take
     
  6. Legojon

    Legojon I only wanted a remap
    Moderator

    Joined:
    Jul 7, 2015
    Messages:
    4,463
    Likes Received:
    2,241
    Trouble is, a lot of the big remappers won't touch diesels past a simple software remap now. As higher bhp requires the dpf knocking out (which you have). But it's now an mot fail, so a lot of remappers have removed the service. I wonder if you get a custom remap from somewhere. But if it hasn't been remapped, that would be the best place to get extra power / torque. And likely custom remaps would offer more bhp for your money. Maybe take a look at Darkside Developments website as they specialise in diesels.
     
  7. R3k1355

    R3k1355 Active Member

    Joined:
    Oct 30, 2014
    Messages:
    1,143
    Likes Received:
    106
    Get it on the rollers first, if it's had a DPF delete and a map then it should be easily over 200 bhp and pretty much at the limit of the turbo.
    If you want much more you'll need a bigger turbo, intercooler and injectors.

    If it feels pretty limp now chances are you've got a big boost leak or a boost control issue causing the car to run drastically less power than it should.
     
  8. Paul Smith

    Paul Smith Active Member

    Joined:
    Sep 10, 2018
    Messages:
    217
    Likes Received:
    19
    It does blow smoke at 3k rpm up so possible boost leak although nothing obvious. What injectors and turbo are recommended as straight swap upgrades?

    Is the boost control distributed through a valve or mapping form?
     
  9. R3k1355

    R3k1355 Active Member

    Joined:
    Oct 30, 2014
    Messages:
    1,143
    Likes Received:
    106
    The N75 is responsible for controlling boost pressure, it does this by varying vacuum to the turbo actuator.
    Both of these parts can fail and cause boost problems, also a loose vacuum hose or one with a hole in it can stop them working properly.

    I wouldn't worry too much about turbo's and injectors yet, if the cars not running right you'll be pissing money away fitting upgraded parts.

    Fix the problems you have first.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice