The thing you've got to realise also with kits like the RRM and RPW is that these are tried and tested kits, and will come with everything ready to go on. By the sounds of your kit there is a lot of unknowns and going to be a lot of trial and error. RRM and RPW have put the time and money into developing these kits, and they are going to be of a good quality. Alot of the gear you buy on ebay, especially with exhausts, manifolds, etc is rubbish quality and will not last very long at all, esp after you've got a bit of boost running through it.
Go ahead and do it how you want, but there has been a lot of advice given here. If you don't want to use it that's upto you, but don't whinge if it blows the kit or engine to pieces
Go ahead and do it how you want, but there has been a lot of advice given here. If you don't want to use it that's upto you, but don't whinge if it blows the kit or engine to pieces