Basically we have developed and add modifications to the turbos, as we have gained experience and have listened to comments made by customers and garages who have fitted them.
Examples are that you now have a drilling on the compressor outlet and hose connection included in case your 50p Ebay intercooler causes compressor surge…lol
We now include a quality hose kit to over come the water feed and return pipe that caused some people problems.We have just made things easier for people to fit them basically.
The design works very well and we have made no modifications to the performance side of the turbo as the turbo works well enough for 98% of the owners who fit them.
People like yourself James would probably like more boost…lol
And we will be providing an upgrade a little later in the year for people like yourself… So watch out for a post on 13T Upgrades…