I'm not a turbo expert by any stretch...
but isn't a TT set up more traditionally used on engines with a "V" setup...V6 such as the VG series, or the 3000GT (Gto)...or a Corvette....
The simple fact being you can put one turbo on each bank of cylinders
on the other hand, with an i4...you have alot more cramming to to get the twin turbos in a smaller space?
Are two turbos more efficient or less?
I imagine its also dead weight...
I understand that smaller turbos spool faster, so two small turbos will get boost faster than one big one tryin to make the same power...
What are other pro's and cons? aside from the simple fact that more turbos...more poarts...more$$$
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