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Zex is pretty popular in the states, but mostly because it's cheap. When looking for the most complete, best quality kit, I always recommend NX. I haven't heard any bad things about Zex kits, which is good considering how widespread the use of them is (in the states at least). I think they...

Detonation is most damaging at mid-range rpms. I recommend 4 basic rules for using nitrous: Don't use nitrous at low rpms. Don't hit the rev limiter while using nitrous. If you can't install it professionally yourself, pay a professional to do it. And make sure you have the fuel system...

Still $2.54/gallon, but man, I wish we had 99 octane!

Yeah, I don't disagree that they work. But they are not optimal in my opinion. I'm glad they decided to think outside the box though.

Most 4-cylinders take 50-shots well. I don't think I'd go over 100 with a stock engine. The shots are usually whp so if you're going to base it off power, then I'd use whp as a reference.

Nice torque curve! Doesn't seem as peaky as most centrifugals, though I expected it to make a bit more than a standard rotor supercharger. EDIT: That came out wrong, what I meant was that I've heard 180 rwkw for the other kind, and I kind of expected centrifugal to produce a little bit higher...

If you're looking for quick spool, I would suggest running twin turbos and a small A/R, like .46 or so. I think the "Disco Potato" turbo (two of them, obviously) would work well to hit your power goal.

I thought I already replied to this, but I guess not. .68 seems too small for a 4.0L V8 IMO. Also, when talking about high compression and boost, fuel atomization is critical. Doing whatever you can to increase swirl for better mixing helps. If you're doing head porting, check out some of...

Top-mount is the worst place to place an intercooler. The OEMs that have used top-mounts typically did it for packaging, throttle response, and cost. Take the RX-7 for instance, if you look at the aerodynamic profile of the FC, the scoop is actually at a low-pressure spot... which would be the...

Yeah, but you gain what, .1L of displacement? The 2UZ gets it's extra displacement through bore.

Not only is there extra exhaust length but there is also the catalytic converter in the way, for those that want to keep their car legal. There IS an appreciable amount of lag, and this is obvious when you take note of another obvious design flaw. STS claims the turbo muffles the exhaust...

Whoops, you're right. Thanks for setting me straight. I know on the RX-7 they used both high and low impedance injectors through various years (not both at the same time though). In either case, the ECU sees the same high impedance load so people generally either add or remove the resistor...

$2.54/gal for regular, $2.78/gal for premium. These are on-base prices (Navy base).

Yeah both setups depend on how much boost you're running and how you drive the car. Since the SC will most likely be bypassing while cruising or idle, it's not really adding any extra load to the engine. I prefer turbos because they are more efficient. However, seeing as how the 1UZ is a...

How much power are you looking to push with that? Seeing as how you have 8 cylinders to fill it up, I would go with the 1.04 A/R. If you're looking to push more than 500 hp, I would go with a compressor that flows a bit more than 52 lbs/min.