i have a s5 engine in a s4 car and i want more boost!?

my car was running at stock boost 7-8 psi

is boost controller is absolutly nessecery to obtain more boost ??

and how i install it ?

also what mean this abreviations ( LIM and UIM)???

 

What other mods do you have? With intake and exhaust mods the problem is usually keeping boost down.

UIM and LIM mean upper intake manifold and lower intake manifold.

 

you should look in to some free flowing exhaust, like with no cats or high flow ones and large diameter pipes.
i have a series 5 engine in my series 4 car aswell. i like the combo. with the exhaust most people run too much boost, and they need fuel upgrades

 

Make sure you have enough fuel before you go cranking the **** out of the boost. Or you will be looking for a new motor.

 

no i have no problem with my intake
i just want to obtain more turbo boost

 

You misunderstand. When you add an intake and exhaust, boost often rises too high to be safe.

Again, what are your mods? Nobdy here is going to advise to how to raise your boost if it might kill your engine.