Originally Posted by 907Bum
Simple I know but have you pressure tested your entire intake system? That and or possibly a non-sealing wastegate could help slow your boost. Does your car have AVCS, if not this will also slow your spool. Your 76 with the .82 hot side should be spooling around 1000 rpms sooner. It looks like a graph from a 3582 1.06 sized turbo without avcs. And it looks like octane is in order for your build
I will go check system leaking this weekend to make sure everything is well sealed. its a little bit leaking from turbo hotside to downpipe v band flange but its sorted now and i know that wont affect spool up.
I did have avc-s and it helps a lot during spool up. but im suspecting 2.1L with .82 gtx3076, it will be slow spool up, is that correct? or might be i have too long up pipe, will that affect spool up? or i have too much timing during the spool up?
Thanks anyway matey!