I can say is that after the 8-9 years I’ve been tuning with them I still have repeat customers that will always call when they have a new machine and get them tuned from brand new. For every machine I do the customer always raves about performance, ease of driving and machines running cooler and a very common remarks is why don’t manufacturers do this from factory. To be honest I don’t really sit down anymore and work out the figures on savings etc as I know that the tunes 100% make a difference.