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Tuning my Cupra TDI (PD150) - Remap, EGR, DPF and Mufflerectomy

Discussion in 'Motors' started by MrSix, Jun 23, 2011.

  1. zipp0r

    Wise Guy

    Joined: Jun 12, 2010

    Posts: 1,254

    ignore the naysaying fags and crack on with it.
     
  2. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    Shall do Zipp0r...quite excited about today :)
     
  3. Matt82

    Capodecina

    Joined: Mar 13, 2004

    Posts: 16,548

    the mfa can be such a compulsive liar, thats all hes saying
     
  4. Dogbreath

    Capodecina

    Joined: Oct 18, 2002

    Posts: 16,604

    Location: Devon

    This phrase really irks me, why do people love to copy Americans so much?

    delete vb: To remove by striking out or cancelling

    Unless you are going to draw a line through your EGR, or press the cancel button on it, then it's not an appropriate word. What's wrong with "remove"? Not American enough I suppose...
     
  5. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    Do I take the bait, or do I ignore it?

    YOU DECIDE!
     
  6. Matt82

    Capodecina

    Joined: Mar 13, 2004

    Posts: 16,548

    its cos its trendy. dont you detail the headers on your car dogbreath?

    so when is round two of the power upgrades?
     
  7. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    Today...taking it in for the remap.

    Reading up on clutches and turbos and hoses and other expensive things too...please remind me that this is an oil burning daily car....
     
  8. macca672

    Mobster

    Joined: Mar 20, 2005

    Posts: 3,092

    Location: Leicester

    great thread, interesting to see the air filter results.
     
  9. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    So yesterday I took the car back to Thor Racing for the remap.

    We loaded the initial map and it made around 14bhp (at the wheels) more than it was running with just the mufflerectomy and the torque curve wasn't the best looking thing in the world! The fact that we were mapping using the dyno filled me with confidence because any "mobile mapper" would have loaded that first file on my drive and taken my money. But we were able to modify the generic map used by many companies and tweak it to get us to a place we were happy.

    After three or four revisions to achieve the desired peak power and smooth out the torque curve we ended up with 287.2lbft and 168.2bhp which equates to approximately 195bhp at the fly.

    I'll be driving the car for a week to see how it adapts and then probably taking the car back next week for a minor bit of fettling to further smooth out the torque curve between 2300 and 2800rpm, basically lowering the peaks a fraction and removing that valley and then shifting the whole torque curve across to make peak torque at 2500rpm which should give the clutch a slightly easier time.

    [​IMG]

    The car is now a real animal to drive, it pulls like a steam train in all gears and the exhaust has taken on a rather brutal note at full power that is more turbo and whistling air than a typical exhaust drone. Inside the cabin however you'd never know it wasn't standard as the sound doesn't make it inside the cab.

    I'll report back in a few days with the MPG which on first impressions seems to be the same.

    Now excuse me, but I'm going out for a play in my tractor!

    Here's the video of the who process:

     
    Last edited: Jul 9, 2011
  10. Lashout_UK

    Capodecina

    Joined: Mar 2, 2004

    Posts: 11,665

    Location: SE England

    Ah, motoring cliches 101. "Pulls like a (steam) train". What, incredibly slowly? :D
     
  11. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    I was thinking more like loud with lots of smoke ;)
     
  12. Matt82

    Capodecina

    Joined: Mar 13, 2004

    Posts: 16,548

    dammit, cannot see the picture at work.

    > the torque curve wasn't the best looking thing in the world

    was it a bit peaky/spikey?

    with the PDs ive heard that have been tweaked have almost sounded like theyve had screamer pipes due to the rush you hear coming out the exhaust
     
  13. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    Yup....kinda two spikes that we've managed to iron out a lot now.
    But it's not noticeable when driving at all.

    And yes, exactly that sound - just brutal pressurised airflow with a hint of "bwarp"! (I love it!)
     
  14. Matt82

    Capodecina

    Joined: Mar 13, 2004

    Posts: 16,548

    sounds awesome-er if you have something on your left with the window down (ie wall, lorry, slower car)

    you hear exactly when it comes on full boost and it sounds like the air is trying to escape as if its life depends on it :p
     
  15. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    haha, already done ;)
     
  16. s0ck

    Soldato

    Joined: Oct 18, 2002

    Posts: 5,299

    Good results :)
    Are you running a straight pipe to the backbox or straight all the way through?

    Excellent news that it's no more intrusive to the cabin too.
     
  17. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    The straight pipe is from the cat back, so we only removed the backbox.
    I'm really pleased with it overall, just starting to save the pennies for an uprated clutch now though as I'm sure my standard one will be feeling the strain now!
     
  18. magicoi

    Wise Guy

    Joined: May 21, 2008

    Posts: 1,119

    Location: Nottingham

    Surprised to hear the exhaust isnt boomy or loud in the cabin.

    My hanger has broken so was looking at replacing with a performance exhaust but the prices put me off, not much difference to OE prices.

    May have to follow your route!
     
  19. MrSix

    Soldato

    Joined: Oct 21, 2004

    Posts: 6,147

    Location: Los Angeles

    The backbox on these cars serves very little as a silencer, the most audible difference is the turbo whistle when you change gear...but you can't hear that from inside with the windows up.

    I absolutely love how mine sounds now, would absolutely, totally recommend the mufflerectomy to anybody - even if just for the oval Cupra style tip.
     
  20. Simon

    Capodecina

    Joined: Oct 21, 2002

    Posts: 22,467

    Location: Berks / Moscow

    Did you map it? A lot of 'we' in the post.

    I would be wary of taking to that power level, the injectors won't like it.