06 JDM Hawkeye with miltek exhaust (sports cat) and remap, current 348bhp.
what would u do/advise for more power?

 

surely someone must have some input

 

Catless down pipe, 650cc injectors, MD321T, CAI kit.

Well past 400bhp

 

cost estimate?
whats safe power on standard internals?

 

2K plus fitting. If buying new.
A good mapper like Andy F or JGM will map well within the safety of your engine and both have lots of experience with the MD321 range.

 

Whats the (safe) limit on the standard Turbo?

 

Running road fuel your looking at 360-370bhp max (but probably nearer the 360bhp), for the turbo, look at Litchfield and their new twin scroll unit (sorry to say that the MD321 isnt a twin scroll unit so you may as well bin that idea ) as Iain has (or is going to) be releasing his new unit very shortly
Think the cost of the 400bhp package is around 3.5k all in but you would have to call and find out.

Tony