I have an EL XR6 which i am about to turbo. Has anybody used or no of someone that has used a haltech interceptor piggyback computer for this sort of application? Is this a good way to go or should i just buy a complete ECU like the wolf3D?

I think its the type of interceptor JMM use.

I personally wouldnt bother unless it was a LOT cheaper than a full ecu.

Dont stuff around, just get a full blown ECU. There is a few people running Wolf's in their falcons now, so you should be able to get some good support. PM FPV_GTp he has got some really good deals going with Wolf at the moment.