I would not recommend the Rotec TBI. All I had was grief with poorly machined, poorly assembled units, having been the first to get one onto the LAA UK fleet. My experience with these units finished with an engine failure at 1000' in the climb out on the second flight with a Mk2 unit. The fuel pressure regulator had been assembled badly.
The support I had from Rotec was shocking. At no time was I rude or impatient with them, I was very supportive, and was trying to get the TBI accepted by the LAA (I am a LAA engineer). Eventually they said to send both my Mk1 & 2 units for a full refund, and upon receiving them offered me 50%.
The Rotec is a poor copy of the Ellison (which is back in production, more expensive, but a long reliable history, "fit and forget") but uses different materials for the soft components. The spray bar seals will wear prematurely and leak unmetered fuel at idle, so eventually you won't be able to lean off the idle mixture enough.
They may look lovely, but that IMHO is where the good bit ends. Trawl the forums to see who else has had issues with Rotec.
I purchased a second had Ellison, before I did so I gave Ellison the TBI serial #, they checked their records and told me all about the unit, date of build, mod' state, last overhaul......you won't get that with Rotec, they don't keep records of any of their units. After setting up the Ellison I have not had one issue with it....every flight with the Rotec gave me a headache.
See:
http://www.vansairforce.com/community/showthread.php?t=114648&highlight=rotec&page=13
We take for granted the engine will operate at all times, I was very fortunate that I could land back on the airfield when my engine stopped....I can assure you it knocked my confidence in light aircraft. Is it worth saving a few $$s on a product which is so unreliable? Your decision.
Neil