I have already made a thread but this is based on another question, so I hope I can get some help with this.
My main goal is to go near full BPU. I already have Blitz NUR SPEC R catback exhaust, Blitz midpipe, Blitz intercooler with 3" piping, Blitz TWIN INTAKE, and more...
My next mod I want to focus on is the downpipe. I am having a difficult time finding a FULL JDM downpipe for a decent price so I am looking at alternatives.
I found this item which is a 1st cat delete. If I get a full downpipe which deletes both cats this means I would need a 2" restrictor ring not to overboost? If I just have 1st cat delete and leave the 2nd cat in then I don't need any restrictor.
So will I make the same power with 1st cat delete apposed to full cat delete with 2" restrictor?
http://img534.imageshack.us/img534/3462/supra216953753569.jpg