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Originally Posted by STRAIGHT-6R
What is the largest twin turbo set-up that a stock JZ2-TT will support? (exhaust gas psi and fuel cc...etc)
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There's only one off-the-shelf "twin turbo set-up" for the 2JZ-GTE:
http://www.hksusa.com/products/?id=695
...and it includes two HKS GT2835 turbos. Of course, if you go custom, you can replace these with any turbos you want (for example Ken Henderson runs a pair of modified GT3240s).
...with the off-the-shelf 2835s, the HKS twin turbo kit will produce about 750rwhp max, which is well within the capabilities of a stock 2jz-GTE. Here's an example dyno run:
http://www.t04r.com/media/billrobards_dyno.jpg
...but
you would need an aftermarket/upgraded fuel system to run this twin turbo kit. You'll need to upgrade the cams as well (at least HKS 264s).
If you're talking about a full-custom twin turbo kit, we'll have to reference the 'record' for an oem 2jz-gte, which is nearly 1100rwhp. In theory, you could run two Turbonetics TS04 turbos (each capable of producing over 500rwhp), but I doubt you could expect a high degree of reliability at that horsepower level.