Im having trouble with massive ammounts of timing pull and low boost from 4500 up. Im giving up. Hoping someone on here has the knowledge to read my vag com log. 2.7T stage1 93 oct. 3 rd gear and 2nd gear pull log. Notice timing retard up to 9s and boost tapering down to 11 psi specified and actual. ARP wont help Ive tried. Thinking I should just reflach but I have a soldered chip with stock-91-93-100 tunes.
JAY
What were the intake air temperatures?
Logging a 2nd gear pull with VCDS is not a good idea, you have a low sampling rate data recorder trying to capture readings from an event that happens very quickly. 3rd gear is better since it gives more time for additional readings to be made, but you really need to use ME7Logger if you want to try diagnosing a short duration event.
Why do you say there is low boost? When I convert to psi I'm getting just over 12 psi at 6500 rpm. Do you know where that puts your turbo on the K03 map? If you were 1 psi higher your compressor wheel would be spinning faster than the maximum speed line on the map - what boost pressure were you thinking you'd get from a K03 at the top end? For reference, take a look in the Tuned ECU section at the logs from the Notorious VR Stage 2++ that comes with a warning about how aggressive the file is, boost at 6500 is not much greater than what you are reaching - and APR is considered to be a conservative tune.
The timing retard is not outrageous compared to what I've seen on some GIAC Stg1 logs I have, again though it would be helpful to know what type of intake temps you had at the time.
I wouldn't expect APR to help you, this tune has been around for 10 years and I can't recall experiencing, or hearing of anyone else experience, a problem with the way it functions.