Just bought a 87 supra no power in boost

[DJ 2501]

Hello everyone I just registered and just got a supra today. Im very excited.

I traded my 92 civic for this beast. Has some mods hks hg and bov.

Something weird is going on though and being new to supras I need some help. First thing is the cel is on, I know how to pull the codes but can find any code lists to match them up to.

Second thing is the turbo spools fine and blows off and build pressure but when the boost kicks in the car bogs down and almost decelerates. Anyone have any idea as to what this could be?

I was heavy into honda's but its time to mod some real cars for once. I look forward to working on this car and learning and helping out around here.