Category Archives: AgS4

AgS4, Testing

A-Pillar Boost Gauge

I got around to re-installing the A-pillar gauge pod and boost gauge today.  I have it tied into the turbo compressor signal line so I get pressure at the compressor, the downside is all I get is positive pressure, no vacuum.  Eventually I’ll run this line elsewhere and have the compressor signal line going to a data collector.

SPP A-Pillar Gauge Pod
SPP A-Pillar Gauge Pod

I also went and made a short log just to evaluate whereabouts the stock tune lands on the BW K03 compressor map.  There’s room to expand here:

k03_comp_chart_overlayAs expected the boost comes on quickly; for comparison a K04 size turbo would reach the 8-9 psi mark about 500 rpm later.

k03_boostFinally, I was a little surprised at how flat the IAT’s were.  This is on stock boost levels, but I had spent a couple of minutes sitting at lights before making this log and normally with other turbo’s (larger and more boost), I’d be seeing a decent climb in the intake temps.  The takeaway here is that for how the car was built by Audi to be operated the stock IC’s look to do a fine job.

Stock IC and Stock Tune IAT
Stock IC’s and Stock tune with BW K03’s

Lastly, my hope is to soon get this thing connected so I can test out the Eurodyne BoostManager Water/Methanol injection system.

Eurodyne Boost Manager

AgS4, TIP -> 6MT

Interior Swap

I liked my worn Silver Alcantara insert seats; enough to give up the all leather, black, heated seats that had 60,000 less miles of wear on them to get the Silver inserts back into the car.  Fortuitously there was an S4 owner nearby who was looking for a good condition interior, so we met up and did a swap.  Out with the black leather and accompanying door cards and in with the Silver Alcantara and aluminum belt-line trim.  I still need to swap the trim from the front dash, but the interior swap is 95% complete.DSC_0014DSC_0011DSC_0012DSC_0013DSC_0018DSC_0016