Engine builders ( THE DODGY ONES) will say no warrenty for anything....when you take them to court and get 25 grand out of them for a blown engine they might understand there has to be a warrenty....true story

Put your car on the dyno straight away and use the dyno to load up your engine ...4th gear load it up to bed the rings in if you dont do this your compression wont be good..you will get blow by