Actually at first the Bloemer car didn't had the rear wing.
The car first appeared at the 2nd round at Hockenheim, having no rearwing and a somewhat odd grey/white/red livery
http://forums.lorddigital.com/Projec...oemer-Zoom.jpg
The team obviously skipped the next 3 races and returned for the support race of the 24h race on the Nürburgring. Now the car had the white/red colours of Sponsor Test&Tuning and the mentioned rearwing.
http://www.tourenwagen-revival.de/in...nent&Itemid=96#
They then skipped the race at the Norisring and returned for the second race of the season at Hockenheim, this time the car was driven by Gerhard Müller.
http://forums.lorddigital.com/Projec...cs/Bloemer.jpg
The team then skipped another race at Diepholz and Schall was back in the driving seat for the remaining 2 races at the Nürburgring and Hockenheim.
The car is here shown at the Nürburgring, WITHOUT the rearwing
http://www.tourenwagen-revival.de/in...nent&Itemid=96#
Haven't been able to find any pictures from the final round at Hockenheim.
I may have another theory on the origin of the Bloemer car. In the picture of Müller at Hockenheim, there seems to be some kind of fuel filler cap/cover on the center roof pillar. This is a feature none of the other group A supras had. But the TTE-ran rally cars featured a fuel filler cap there as seen in the picture below.
http://www.rally24.com/res/img/produ...s-15900_1l.jpg
So could it be that the Bloemer car was an ex-TTE rally car, which TTE sold after they sacked the supra programme in favour of the Celica?