[s-cars] Wastegate spring mod???

[R. Mair]

Ugghh... i heard this before  :-) How it came about was i fell into a wrecked S6 avant for cheap, couldn't properly fix it and decided to sell the car whole, which you may remember being for sale on this list last year at this time. The S6 had a TAP chipped ECM, which i swapped into the 94 S4 that I acquired. The S4 was previously a one owner and kept stock all its life. So by default (and free) i had a chipped S4 and was happy, but of course what did I know?! Anyway, I'm aware that the TAP is not the best chip out there. The reason i asked about the WG spring is that i was browsing TAPS site looking for antennas and came across the section where they offer chips, springs and map sensors in various forms of up upgrades, all w/o having to swap in a better EM. FWIW, i have a 90/90q with the AAN engine and all the RS2 mods, so i'm familiar with that level of performance (car's not running yet). But as far as my S4, like anyone else, i'd like the most amount of HP possible without going into a major labor and $$$ hassle. The TAP stages (chip, spring, MAP) looked enticing. While we are on the subject, does anyone have any thoughts on AWE's chips for the 20vt? Thanks again!!

Rolf

  ----- Original Message ----- 
  From: mlp 
  To: 'R. Mair' ; s-car-list at audifans.com 
  Sent: Friday, February 18, 2005 3:48 PM
  Subject: RE: [s-cars] Wastegate spring mod???


  Try using someone other than TAP.  And if you're going to go through the
  effort of changing out the pressure sensor, well I have to ask why, if all
  you intend to run is basically stock boost levels which by your
  comment/concern re: potentially burning a valve, but no plans or wish to
  change the exhaust manifold etc. you feel you need/want to change the
  pressure sensor.

  If you are going to change the pressure sensor, get a decent set of chips
  for your ECU. 

  The bigger spring is a band aid.  If you have an early TAP setup, its
  probable you may already have a bigger spring.  IIRC, that was a fairly
  common TAP kludge/innovation.  The bigger springs can reduce "creep" but too
  much spring can also prevent the ECU from doing its job.  From what I've
  seen of list traffic, and personal experience, the WASTE GATE's on these
  cars rarely, very rarely fail, ... or need to be rebuilt for that matter.

  my 2 semi sentient cents 
  mike

  >-----Original Message-----
  >From: s-car On Behalf Of R. Mair
  >
  >Question for the list... sorry if it's redundant. My 94S4 has 
  >a TAP chip and a baily's diverter valve, that's it. Will a 
  >different waste gate spring make any difference at this point? 
  >I want to avoid the RS2 upgrade on this car, and i don't want 
  >to have to install a fancy exhaust manifold or header due to 
  >potential valve burning. I drive rather mildly for the most 
  >point, but the occasional burst in the turnpike always comes 
  >in handy. I was going to rebuild the wastegate assembly soon, 
  >just for PM sake, and figured while i was in there, perhaps i 
  >could swap out the spring. Your thoughts? What about the 
  >different map sensor TAP sells?
  >
  >Rolf Mair
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