But if the customer comes in and says i want 600bhp lets go for it...all you can do is what the customer wants..this kinda BHP 550 plus aint never gonna be reliable for long.
No, first of all you ask yourself can I deliver what this customer wants and do I know what the fook I am doing. So many tuners just say yeah I can do that for you, give me the cash and then fook it up and have the fooking nerve to try and blame the customers.