The first time tuning, we thought there was a hardware issue, so didn't but too much time into a potentially wasted effort. We since identified the issue, fixed it, and put some more time into the tuning. I'm very happy with the results:



The above might actually be when we were running rich up top, and thus the drop off - we addressed that later.

Here's an overlay of the above with the prior dyno tune (and stock). We saw about 30wHP gains around 5500 RPMs. :



Car details:
2001.5 Golf 4dr 1.8T
170k miles
GT28R turbo
Siemens 60lb injectors
Tyrolsport SMIC
APR Exhaust
20-21 psi tune

• http://www.eplabs.net

Mark P


Dyno: 469wHP / 451wTQ
93 oct - best 60':1.734 | best 1/4ET:12.239 | best 1/4mph:116.58
100+oct - best 60':1.698 | best 1/4ET:11.762 | best 1/4mph:121.72



ECUx template version 11.16 (3/12/07)
AWD Dynos by State - Race Gas in New England - B5S4 100k+ mile post

Current:
'02 Audi S4 Avant, Imola Yellow, APR Stg3 - imolavant website - 185k miles
'01.5 VW Golf 4dr 1.8T, Satin Silver, GT28R, EPL-tuned - 14.8 | 101mph - 196k miles
Previous:
'00 Audi A4 1.8T, Silver - Quattrobonium website