Originally Posted by lukeytheduke
whats the most boost a stage 1 can handle with alloy rad and 500cooler. Mine currently peaks at 20 and holds 16 but my mechanic said he can change the preload on actuator to get about 24psi?
NO NOT at all, unless you want to destroy your engine!
You can't just simply wind the boost up, unless you have the fueling avaliable, in other words it's 'mapped for it'.
There is a whole lot more involved than what's been said, for example the standard injectors need to be changed, plus you would need a 3 BAR MAP sensor and a -31 actuator (If you don't already have the latter) and a remap (Chip).
In other words you would need to go for a stage 3 setup OR the likes of a 'Gunship'.
I mean this in the nicest possible way, but leave any tuning work on these cars to people who understand and know how they work (Tuner's in other words), what you have been told is totally incorrect!
Generally speaking stage 1 is about 15PSI, the standard MAP sensor can only 'see' 1 BAR of boost pressure!
Other things like a decent HG is fitted should also be verified.