What are the realistic gains to be expected from the chip linked here>
Ebay - X16XEL Chip
A nearby recommended workshop says the best gains to be expected are 5-8 bhp (max 104-107).
Has anyone any experience of such chips. BTW I have already bought it, quite stupidly?? The feedback for the seller says the product performs, but I can only assume the workshop owner knows what he's talking about.