Vag com 409.1 from ebay and 1998 new beetle

Discussion in 'VW Mk4 Jetta, Golf, New Beetle, Passat TDI forum' started by gta18, Jun 24, 2012.

  1. gta18

    gta18 Member

    Joined:
    Apr 23, 2012
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    Car:
    1998 new beetle tdi
    Has anyone tried the 15$ vag com 409.1 from ebay with vcds to tune the IP of the 1998 new beetle tdi?
    Coz i just changed my timing belt. Everything is running fine but i just want to optimize timing.
    Thanks!
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  2. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
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    Car:
    2006 Jetta TDI
    Location:
    CT
    It will work with VCDS's trialware version.
  3. gta18

    gta18 Member

    Joined:
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    Car:
    1998 new beetle tdi
    Chitty,
    So the $15 cable would be enough for timing and IP adjustment? and can it also disable the egr for my 1998 new beetle tdi 1.9?

    Thanks!
  4. chittychittybangbang

    chittychittybangbang Administrator

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    yes, yes, no. EGR is advanced function and even if you turned it down, car will adapt though MAF = lower mpg. It'll also set a CEL which in socal = no emissions pass. My suggestion: leave it alone, VW tuned it for low smoke, emissions, and mpg.
  5. gta18

    gta18 Member

    Joined:
    Apr 23, 2012
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    Car:
    1998 new beetle tdi
    I was also thinking of just disconnecting and blocking off the vacuum line going to the EGR valve to minimize the soot buildup. I think it would be essentially be like having block off valves right?

    Have you tried that or is it going to build up soot in the egr cooler you think?

    actually I just passed smog here in Socal for the beetle. They just did a visual and scanned for codes. The tech said it was his first diesel! LOL. my injection pump was even leaking. I told him It was just leftover diesel from me cleaning the engine....
  6. chittychittybangbang

    chittychittybangbang Administrator

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    make sure to get the pump leaks fixed, bad for all the rubber in the engine bay, bad for asphalt, and of course, fuel in the hot engine compartment is always bad. Diesel won't flash like gas but still not good.

    blocking off the line will do same thing as block off plate but again, you'll get CEL since car knows something isn't right. You must have ECU flash to remove the EGR w/o any CEL. If you put a piece of tape over it you'll still see some light and bad habit since you want to know right away if something else trips the CEL.
  7. gta18

    gta18 Member

    Joined:
    Apr 23, 2012
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    Car:
    1998 new beetle tdi
    who do you recommend getting the ecu flash from?
  8. Seatman

    Seatman Active Member

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    5,222
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
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    Mods:
    PP764's, turbo and mapping
    Malone, rocket chip, kerma tdi etc, try them.

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