Originally Posted by
seangti
Yeah, you're not wrong. I run VAGAutowerks tunes on both my polo's, daily and stage 3 track car. I was running Superchips on my daily, but after learning to read the logs, it was running way too lean for my comfort so got another tune. I came out of Subaru's, so the only way to run external tuning boxes and dyno time.
My comfort with this approach comes from logging the car and reviewing all the parameters. I'm not sure how the later model cars are logged, but the Polo/mkIV era use ME7 Logger which has a much higher resolution than VCDS offers. 20hz sampling on ME7 Vs VCDS at around 0.8hz. And you can log ~60 parameters at a time as opposed to 9.
For OBD tuning purposes, I feel that level of resolution and transparency is essential, particularly under the conditions it gets driven. Through what I know now, if you get an OBD tune it should have the logs to back it up, just like a dyno operator would provide. I'd be comfortable working with VAGAutowerks/Underground for the tuning, as once done, you can always put it on the dyno for validation, they should also discuss the logs with you as they develop the tune. Any concerns with the results, you can go back to them to tweak the tune. For my track polo, we ran 6+ tunes/logs to get it to a point of comfort. I've since had left foot braking engaged since installing a LSD, they can do torque limiting and many other things.
I've spoken with my local mechanic, he runs a large VW Golf rally team in china and builds rally/race EVO's in Brisbane. He was most impressed with the tuning and logging software.
I'll always refrain from tuning war banter, though I think they should provide greater transparency of the parameters that are changed and log the cars rather than an upload and send you away.
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