i just installed 450cc dsm injectors on my turbo civic , now how much should i lean it out on low throttle and hight throttle , i been playing around and on low throttle i had to lean it 50% yet when is cold the check engin elight comes up the egts are very low as well... on high throttle i had to lean it out 50% as well if i go higher @ 13psi it starts popping thats with the egts at only 750c this is at 7000rpms .....
now i currently have a tdo5 turbo , im upgrading for a t3t04 60 trim .63a/r and putting a block guard should i get a thiker head gasket to lower the compression and be able to boost higher , and is that so , how much more could i be able to boost ??

thanks