2008-05-05 274 7.412 36.97 "1st 1/2 tank... filled op with about 60L of 95ron the 1st time and now refilled with 28L of 98 so that should give me something like 96... see if that makes any difference... car needs 95 so maybe not... but we'll see."
2008-05-13 239.8 6.4 37.47 "filled up with 98
installed wheel dams just before refil
some eoc"
2008-05-22 341.1 8.516 40.05 "fast acceleration in 2nd, and than straight to 5th small wheeldams still in place"
2008-06-09 435.5 11.63 37.45 "first tank with the partial undertray, not the great improvement i'd hoped for, but not the worst tank either, and considdering the previous thank might have had a fill error this seems ok. still some revisions in the design might be needed"
2008-06-25 466.6 12.17 38.34 "aluminum undertray in place for more than half this tank about 15L in stock config + 30L with full undertray minus wheeldams. i hope my next tank will bring me around 40mpg
planning to redo the wheeldams, but a little lower bit brake cooling ducts above them, like i've seen on some VW's next on the todo list is an active grillblock for the top grill"
2008-06-30 203.2 5.183 39.21 "undetray"
2008-07-14 501.4 12.97 38.66 "undertray, some highway with full roofracks"
2008-08-07 533.7 14.29 37.35 "got 20L on belgian soil to make it to luxemburg. full fillup there, mostely highway"
2008-08-10 105.6 3.093 34.14 "driveing around the hills in luxembourg"
2008-08-10 133.5 3.133 42.61 "fillup upon return"
2008-08-28 318.1 8.6 36.99 "normal driveing... working on active top grillblock"
2008-09-15 319.4 8.113 $1.448 39.37 "some grillblock setup experiments; installed lower wheeldams along with the original's to form a big dam near the end of this tank, also ran a few lites of diesel contaminated fuel , but since i don't know how much, and it seemed to have canceled itself out it's not included here... i don't recomend it however"
2008-09-23 216.8 6.028 35.97 "wheeldams
grillblock and tailstrakes near end of thins tank"
2008-10-14 420.7 11.84 $1.32 35.53 "colder weather experimented with sideways extended undertray and various wheeldam and grillblock versions not to happy with the results so far but cold weather and a lot of short trips might have a part in this."
2008-11-13 466.6 13.46 $1.185 34.67 "not to happy with the result quite some experimenting and bad weather over this tank. i've taken off the rear strakes and revised the wheeldams although i'm not sure if they're ideal yet. after this fillup i've put the rear wiper back on, as the weather calls for it"
2008-12-09 513.2 15.73 $1.088 32.63 "very cold winter weather, had to idle for 15 minutes a couple of times just to be able to defrost the windows. did some wheeldam experiments which i think didn't went well, new configuration on from this tank on so we'll see if that's an improvement"
2008-12-31 353.6 11.2 $1.037 31.57 "big wheeldams that curve around the wheelwells on the inside in place, side undertray removed
car feels very good on the highway, although maybe a bit light at the front...

freezing cold, day and night temps don't go above freezing, it's been about -1 to -9 celcius all the time, so FE and aero are on the backburner... i'm glad the car will start in the morning. it's disapointing this last fillup of 2008 is the worsed ever, but on the other hand fuel prices have gone down... that's no excuse for bad FE but it does make it less of a real problem. anyway.. lets hope FE will go up again in '09"
2009-01-21 492.1 16.22 $1.102 30.34 "estimate based on what i remember 7.7 l/100km and the data about the previous and next tank
recovered the data while moveing (forces you to go trough all your stuff) still my guess was acurate and the milage is bad
combination of partial fillup on 01/17/09 and full fillup on 21/17/09... virtual average of these two filups
somethings needs to be adressed... the car has been returning a crap milage these last months... might be the cold, but i'm not happy with my results"
2009-02-06 392.2 12.7 $1.138 30.88 "first ""reliable"" result of this year... temps are getting slightly better but not the milage... i'm running a grillblock for the topgrill wich doesn't seem to help much, and recently i noticed on of my wheeldams has been broken off... i think i'll revise these once more"
2009-02-25 436.2 13.66 $1.14 31.93 "temperature is getting a bit warmer... housemoving so lots of short trips etc... also slightly longer work commute still i'm trying to keep up some eco driving"
2009-03-12 359.1 10.69 $1.169 33.59 "temps are getting a little warmer. fixed broken weel dams, added frontal dams, and taped hood seems with wind striping"
2009-03-25 315 9.37 $1.169 33.62 ""
2009-04-15 487.7 13.85 $1.185 35.21 "weather improvements, experi?mented with new smooth dams"
2009-04-17 119.3 3.3 $1.169 36.15 ""
2009-04-20 286.5 7.93 $1.212 36.13 "return trip from holliday in the ardenes, two days of highway and hill driving

oil change"
2009-05-05 328.7 9.6 $1.204 34.24 "smooth dams in place 50% topgrillblock. perhaps a bit of a heavy foot this tank"
2009-05-12 162.2 4.67 $1.245 34.73 "some additional dams at the end of this tank
a small wai experiment"
2009-05-20 187 5.12 36.52 "building new dams yet again "
2009-06-04 349.2 9.97 $1.302 35.03 "some highway"
2009-06-08 110 2.84 $1.307 38.73 "still running without sidefairings but wich extended wheel dams working on now frontal dams"
2009-06-17 234.3 6.25 $1.327 37.49 "driving without side fairings"
2009-06-30 315.7 8.49 $1.203 37.18 "summer eoc"
2009-07-27 434.9 11.88 $1.268 36.61 ""
2009-08-04 160.3 4.46 $1.297 35.94 "short shuttle's to the show (two weeks off)"
2009-08-20 318.7 8.46 $1.308 37.67 "1.308 took of the wheel dams. drove a bit un hypermyler like very hot weather"
2009-09-10 392.7 11.08 $1.282 35.44 "dam experiments hopefully results with the next tank"
2009-09-28 413.2 11.54 $1.305 35.81 "new grillblock flap on lower grill"
2009-10-06 193.9 5.32 $1.232 36.45 "running lower grill deflectors and full width undertray with small wheeldams"
2009-10-14 177.1 5.51 $1.247 32.14 "first days of freezing, slight overfill (should show up on next tank) otherwise, huge problem"
2009-10-21 193.9 5.71 $1.266 33.96 ""
2009-10-30 177.1 4.96 $1.266 35.71 "installed new grillblock, oil change after this tank"
2009-11-18 410.1 11.98 $1.298 34.23 "lamost full upper grillblock lower grill lips"
2009-11-25 115.5 3.48 $1.298 33.19 "installed new strakes dat deflect air outwards, full top grillblock, lower grill lip recent oil change
colder weather mostely wet"
2009-12-08 366.6 11.07 $1.301 33.12 "experiment with dams ended after this tank

clean config exept for partial grillblock
drove the car in lower gear more often at the end of the tank to flush the engine"
2010-01-11 250.4 8.63 29.02 "loads of snow"
2010-01-11 352.9 11.27 31.31 "slightly better weather, installed new undertray halfway trought this tank"
2010-02-19 328.1 9.69 $1.323 33.86 "new undertray and wheel dams in place, better weather"
2010-03-02 193.8 5.84 33.18 ""
2010-03-18 143.5 4.23 33.92 "estimate based on average, original log lost"
2010-03-30 398.9 11.57 34.48 "still running with undertray and new wheeldams and grillblock
oilchange and tech inspection

added extraction louvers to the undertray"
2010-04-01 72.08 2.34 30.8 ""
2010-04-12 349.8 9.89 35.37 "rear strakes installed behind wheels"
2010-04-27 257.8 7.27 35.46 ""
2010-05-18 397.1 11.48 34.59 ""
2010-05-19 200.1 5.12 39.08 "long highway trip
new wheeldams
strakes behind rear wheels
installed small rear wheel dams after this tank"
2010-05-30 288.3 8.21 35.12 "one weak work commute + trip to luxembourg

angled front dams, flat rear wheel dams, + rear wheel strakes.

deliberate overfill (+/- 1L) causeof cheap fuel
so actual result should be better, should show up at next tank"
2010-06-02 168.4 4.07 $1.404 41.38 "return from luxembourg+one day commute"
2010-06-17 333.6 8.95 $1.404 37.27 "wai experiment started"
2010-06-22 100.7 2.65 $1.414 38 "wai"
2010-07-13 435.6 11.05 39.42 "wai revision, added turbulator cones about 2/3 in this tank"
2010-08-06 436.8 10.77 40.56 "wai+ turbulators"
2010-08-25 483.4 12.42 38.92 "end of the hollidays, weather a bit more rainy"
2010-09-06 271.5 7.18 37.81 "school started again and traffic picked up. much more stop go traffic and colder weather too. i expect FE to decrease further from this point, but i do try to avoide idling and keep coasting where safe.

installed rear undertray after filling up"
2010-09-15 171.5 4.77 35.95 "diffuser test, taken of at the end of the tank, possible design flaw."
2010-09-30 342.4 9.22 37.14 "additional grille block"
2010-10-10 264.1 7.19 $1.375 36.73 ""
2010-10-20 218.1 6.47 33.71 "colder weather + traffic jams.
new exhaust and oil"
2010-11-08 348 9.84 35.37 ""
2010-11-20 284 8.61 32.98 ""
2010-11-30 64 2.11 30.33 ""
2010-12-16 360.4 11.57 31.15 ""
2010-12-24 154.7 5.39 28.7 ""
2011-01-17 272.7 8.17 33.38 ""
2011-02-04 393.3 11.44 34.38 ""
2011-02-18 293.3 8.54 34.34 ""
2011-03-01 196.3 5.94 33.05 ""
2011-03-08 134.2 4.03 33.3 ""
2011-03-29 410.7 11.85 34.66 ""
2011-04-17 302.1 9.57 31.57 ""
2011-04-19 204.4 4.9 41.71 ""
2011-05-02 244.8 6.41 38.19 "full undertray grillblock"
2011-05-24 418.8 11.64 35.98 ""
2011-06-15 280.2 7.65 36.63 "before koln trip"
2011-06-17 301.4 7.78 38.74 "koln trip"
2011-06-30 260.3 6.86 37.94 "enlarged front-side airdams"
2011-07-06 109.4 2.49 43.94 "side airdam extentions+widening
possible underfill and error cause of short distance, but still an encouraging result"
2011-07-11 181.4 4.93 36.8 "estimate"
2011-08-01 509.5 13.6 37.46 ""