Successful APR Tune
Got my 2011 Golf TDI APR reflash yesterday. Black Forest in Cary, NC completed it as their first actual successful flash, as the first few cars through the previous week required remapping. The APR sale price was extended because of the teething problems. Single program only, available for my ECU model - no opportunity to manually switch back to stock as advertised by APR. So after first 150 miles, what's the bottom line?
The good
I'd say it feels like upgrading to a Golf TDI badged with an R. Subjectively more pull in all gears at all speeds. But in first gear, front wheels scrub over pavement breaks, so without the benefit of 4-Motion, more power would only be useful over 30mph. Using a handheld stopwatch, 0-60 is just shy of 8secs, both with and without traction control, in DSG Sport mode. Only slightly better than my previous measurement of stock. But it feels more fun in all situations I tried, both on and off the interstate. 60-80mph punch on interstate is noticeably smoother and much faster. Engine is smoother at higher revs and more free revving over 4,000rpm, without the fall off and grumbling of the stock TDI. MPG so far seems the same as stock, maybe 41 vs normal 42mpg average for my lengthy 150 mile commute, but I've driven it harder today and not enough miles yet to be sure.
The bad?
DSG in Drive grinds along in town at +/- 1,400rpm. Less than full acceleration can cause a delayed downshift until the turbo kicks in around 1,800. A little odd. Sport mode on the other hand is improved, operating in 1,900-3,000 rpm range in town (max torque), and no longer causing the uneven engine breaking sometimes felt in stock model. Black Forest picked up the Drive issue when they tested the vehicle and suggest considering a DSG custom reflash.
Overall in real world driving I've found it difficult to find opportunities to legally stretch the new capabilities, and look forward to tomorrow's commute to have another go, so I'd say I'm one very happy customer!