well i just got a jdm d15b vtec head and a d16z6 block, sent both to the machine shop in the head im getting the zex 53900 camshaft,kms motorsports springs and retainers, and intalling my camgear on it,and valve seals, and on the block geting it bored 20 over, wiseco pistons, eagle rods, new bearings, new oil pump, block gaurd and some other stuff. But im running the greddy kit and i want to up the boost when i get the motor back what is the 15g's effecitcy range would 15psi be too much? and has any one had exprience with the kteller 2.5in downipe? thanks for the help

 

push a small snail and they make a lot of heat, and that 15g may fall out of max boost up top..its safer to buy a bigger turbo...dont know about the downpipe

 

15 psi is fine. but trust me u will be bored with the lil 250whp that it pushes out. ur power will die up top. looking into something bigger like a t3/to4b, t3/to4e 50 trim while the block is in the shopa\