I have two 20g's for my cars and i bought both from aet and i found them really good to deal with. One is in my track car a 1997 sti and it makes lovely spool and a gorgous humm. It made 330bhp at 1.3 bar on what the mapper described as sh*t fuel. New fuel and a tad more boost and it made close to 360bhp. I often had it wound up too 2bar at mondello ha. I have the same turbo siting on shelf now going into a fully forged Type r. If it is turbo i be surprised cause aet are huge company with a great reputation but if it is i sure they will help ya. I found them cool to deal with. Hope ya get it sorted 
