Originally Posted by
oldford
You also have to consider fuel prices nowadays.
The higher you go in stages, the more fuel you need.
Stage 1, when properly done, will be a big step.
That depends on the usage really,
If you put a T3 std car next to a 500BHP T4 car, the T4 car would actually be better on fuel on the motorway at 70-90 mph as it will never be on boost and can stay at lambda 1 for much longer than a smaller Turbo.
My T4 car was doing almost 38mpg on a run!
Obviosly, flip the coin and use it hard, and big power cars drink fuel as they require more fuel to keep a safe AFR under hard load.
Stage 1 is very simple to do, works really well, but they do have a habit of leaning out at high revs, so its always worth having a pro check it over, or ideally go for the 803 greens so you can run the T3 hard. The Std injectors are really a bit too small.
It doesnt have to be that much more expensive to go the stage 2, 803s route.