Hi,
yes some strange things goes on, but later on that.
First my QSV arrives last week (good), i was willing to install it last weekend, but than i get a cold and also could not find a shop for heat resistance bolts to fit the turbo with the quick spool valve. Than i have done some maintenance, like proper fitting the rear bumper after some f..king stupid idiot crash into the rear bumber (during the car was parked on the side of a street) and did not stop to tell me, polish the car to get i red again, readjust the rear hand brake, put some oil in it, put some water in it and so on. It is sheduled to install the QSV next weekend, so i hope to come back with something interesting than.
Now we come to strange thing, as i write earlier the big turbo has increased the max. possible boost level from a bit more than 1,0 bar to over 2,0 bar after the first week of driving. Now i want to know what is the max. boost level so i ordered a 3,0 bar (~45 psi) boost gauge from VDO and installed it some minutes ago, but instead showing me how far the max. boost level is above two bar (~30 psi) it shows only a bit more than 1,0 bar (15 psi) as max. boost level. I have to say that i only accelerate hard in second and third gear, so i assume to get it near 1,5 bar in fourth and fifth gear but way of what the other boost gauge shows. Now it's gets even more complicated, the first boost gauge (range of 1,5 bar) i have used has shown a lot less boost than the second one (range of 2,0 bar) (you can read this a few pages ago), but because the first one was a 10€ cheap no name thing from ebay i was sure the 40€ brand second gauge would be the correct one. Now you could argue the first one was correct as the new VDO is either, but this would mean the last dyno run with 1,0 bar from the second would have been conducted by far less than 1,0 bar wich would be not in line with the measured power figures.
The only thing i can imagine in the moment is, that the first gauge was bull***, the second was correct up to the point the boost level of the S2B turbo increases without a reason and also the VDO is correct now. But the question mark there is, why should a boost gauge start over night to show nearly twice the boost as bevore? What would be in line with that, is the fact that my 1/4 mile time with 1,0 bar at the gauge (right after the dyno run) was nearly identical with the one with more than 2,0 bar at the gauge.
Here are all analysed G-Tech runs:
(purple und orange are two runs from februar 2012 with >2,0 bar, light blue is actual with S2B turbo >2,0 bar (second gauage), green is actual performance curve in second gear)
here is direct comparement between 2012 (S100) and 2013 (S2B):
and here G vs. speed:
and here is g vs. time (stock g-tech plot), which is useless because it shows you higher g's at higher time when you was slow up to there and your speed is therefore also slower
here is a comparement beween the engine load from dyno run and g-tech data, corrected for drag and drive train losses:
(the dotted ine is g-tech, the other is dyno run)
and last but not least two pictures of the QSV and an actual one from the golf: