I want to upgrade my stock turbos on my 2001 rx7 to the next level above the stock ones, i don't want to spend, big unless a single turbo setup is in the range of $3000.

My budget is $3000, is it expensive to convert to single turbo, for exhaust whats the best size to get 2.5 or 3, i don't want the car to be too noisy. Also upgrading and tuning the ECU how much is it do i get a big HP increase. and better fuel. Cause i used to have a 300zx, i tuned mine with nistune it have more HP accelration and it altered the fuel so i get more.

Whats a good chip and reconmended tuner. I'm curious although I'm not too farmiliar with the tuning scene.

 

Any turbo upgrade you are going to do will need a standalone to be reliable.

 

so can you guys tell me whats the second ine above the single turbo, as i may buy it, or if the single turbo setup is better, then ill takee that one over. So im guessing ill need a big frount mount intercooler which one. And what good size exauast that aint too loud. I just bought the latest HKS colour screen boost controller that out of the world. $850 alot, but i just need to know what i mention so far, is good for the car and safty.