No, no cams, this is the picture he sent me when he tune his car
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I know Dyno Dynamics well, and have literally hundreds of pulls on one. That car is reading about 40whp low for his mods, so he's either sandbagging you (which I highly doubt as he doesn't sound smart enough), or his car sucks. At that 312whp level, a full weight X is only good for about 12.5@110mph. If you had a stage 2 DSG car, you ought to be able to edge him out from a roll, but he'll trash you from a dig. If he gets his car sorted out, it's good for 355whp DD, or 12.10s around 114mph. Little bit of weight loss, and it'll go high 11s on that small stock turbo, all day. My advice after you are full stage 2 is to race him pump gas to pump gas. With his low numbers, you will win with ease. And it's only fair, right? Good luck.
Evos make better power than GTIs, but the less weight of the VW offsets that somewhat. Too bad you don't have a DSG, that would really help turn the tide.
The place where the Evo shines is handling and track work. GTI is an infinitely better daily driver- more comfortable, way better fuel economy, so much extra cargo room.