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1.5jz or 1jz wont matter buddy, they are small and can only flow so much air. you could put them on a 8 litre chev, they will still on flow the same amount of air. its all about air into and out of the head. bascially the answer to your question is no, they are to small to flow enough...

i disagree with that. in australia no one has made any where near 400 rwhp with factory twin turbos. even with cams, plenum, ecu injectors and race fuel. 340 rwhp is about the highest mark any one here has made. 400 rwhp will require upgrading twins or a single.

no, i wont be giving away my map, thats intelectual property of jon from microtech. Jon tunes my car, and i race under his workshop name. i run a to4r, i have a fully built a340e, ie 3400 stall, shift kit, manual shift box controller, rebuilt and strenghtened internals, ie clutches and vavle...

thanks man. after i put twin dump pipes on ans my current spearco intercooler i ran 13.0 at 108, had troubel with traction once i hit second gear, back then we didnt have a dedicated drag strip in sydney. my mate went 12.8 with basically the same setup

i ran 13.7 at 108 mph when i had a stock twin turbo 1j

i have had a ltx12s on my 1j for 2 years now its a great ecu i am making 468rwhp through a tricked up a340e auto box. i have run a best time of 10.7 et at 126mph. i have the 45 psi map sensor option in mine. a friend of mine is a microtech dealer, if you need a price let me...