New Guy

Does it make any difference on what dump valves you use?
What's the difference is made using twin turbo or using a single with bigger intake? Eg upgrading a 60mm to 90mm intake?

Dump valves differ ie recirc or blow off to atmosphere wich always leads to the big debate i believe recirc is better ....

Dump valve is irrelevant really as long as it works and does not leak whilst under boost

The larger the intake pipe the better as you get more air flow if your running a lot of power it's needed as you need to get as much air in as possible but sometimes your better off using a smaller diameter pipe and using remair effect
it's a little more complicated than that as it depends on type of turbo setup your using

The early skyline gtr's used twin turbo set up with their straight 6 rb26 lump, smaller turbo to aid fast spool time then the larger turbo takes over when more air is needed
This allows you to run relatively high power but without sacrificing spool time lower down in rev range.
Big turbos produce big power but in every day driving they can make the car very sluggish until the things spinning and comes on song so not ideal for anything other than drag racing and straight line stuff

What types of turbo set ups are there I've heard of blow-through and draw-through?
Can you adjust what amount of revs you want the boost to kick in?

Big question Henry
Il explain it when I see you as a lot to try explain this time of night
Will see you in the morning fella

See in morning