Originally Posted by SlideFox

[B]Twin Turbo Kits:

Greddy Twin Turbo: Arguably the most common twin turbo kit for the 350Z. The Greddy twins kit has been known to make solid power out of the box. The Greddy Twins come with (2) Greddy 18G turbo's 440cc injectors, and Greddy E-manage. People have made in upwards of 600+whp with the right mods and this kit.

Some of the downside, if any, the intercooler is sold separately. Some might not see that has a "downside". The Greddy kit tops out at roughly 700whp. So BIG whp numbers are not there for those who are going "All Out". The Greddy E-Manage is not a favorite with the Z community. People do use it, but most opt for a UTEC or a Full Standalone.

With a proper kit, and the right supporting mods, people have made up to 630whp with the Greddy Twin Turbo kits.

Fastest Current 1/4 mile time with a Greddy Twin Turbo Kit: 10.375@132.41mph 1.567 60ft (This was with a TH350)

APS Twin Turbo Kit: Another great twin turbo kit for the 350Z, and is probably just as common as the Greddy Twins. The APS Tuner Twin Turbo kit features (2) GT2871R-1 internally wastegated turbos, cast turbo manifold, high capacity oil pan, and vertical flow intercooler. The APS Basic Twin Turbo Kit includes everything in the tuner kit, but adds fuels and engine managment. People have made upwards of 650+whp with the right supporting mods.

Some of the downside, the same as the APS Single Turbo kit, is the turbos. They have the same cartridge problem as the single kit, and some times require replacing. Also, this kit does NOT included fuel injectors or an engine managment. Some might not see that as a downside, because it will alow you to use whichever products you want.

With a proper kit, and the right supporting mods, people have made up to 668whp with the APS Twin Turbo kits.

Fastest Current 1/4 mile time with a APS Twin Turbo Kit: 11.302@124.06mph 1.790 60ft

APS Extreme Twin Turbo Kit: APS’s top of the line twin turbo kit. The APS Extreme Twin Turbo kit has been proven to be “Top-Dog” when it comes to big HP with twins. The kit includes larger GT Series turbos, 880cc injectors, APS Extreme Fuel System, and a 5” think vertical core. People have made upwards of 850+whp with the right supporting mods.

Some of the Down sides, well there aren’t that many; one being the price. This is not for the faint of heart. Expect to pay roughly $12,000-$15,000+ easily for this kit installed and tuned.

With a proper kit, and the right supporting mods, people have made up to 860whp with the APS Extreme Twin Turbo kits.

Fastest Current 1/4 mile time with a APS Extreme Twin Turbo Kit: 11.302@124.06mph 1.790 60ft

JWT Twin Turbo Kit: The JWT Twin Turbo kit has been know to be the most “OEM-like” turbo kit on the market. It makes for a very clean install, and it gives a very small power band. The kit comes in 3 variations; the 530BB kit, the 700BB kit, and the 850BB kit. The kit includes two Cast Manifolds, two Ball-bearing Turbochargers, FMU, Fuel Pump, Spark Timing Control Module, pop Charger w/ heat shield, and Oil Pan Spacer with Oil Return Line Kit. The difference between the kits is the 530BB comes with GT25 turbos, the 700BB kit comes with GT28 turbos, and the 850BB kit comes with GT30 turbos. People have made upwards of 600+whp with the 850BB kit.

Some of the downsides to the JWT Twin Turbo kit is, availability. You can only purchase this kit from an authorized JWT Turbo dealer, and they HAVE to do the install as well. So you’re limited on shops. If you don’t have one in your area…. Road trip! Another thing, and this really isn’t a downside, is the design of the twin intercooler setup. With an aftermarket bumper some find it to be aesthetically displeasing.

With a proper kit, and the right supporting mods, people have made up to 800whp with the JWT Twin Turbo kits.

Fastest Current 1/4 mile time with a JWT Twin Turbo Kit: 11.150@133.41mph 1.938 60ft

Power Enterprise Twin Turbo Kit: The Power Enterprise Twin Turbo Kit comes in three different setups; Complete, Sem-Full, Basic. The complete it contains Twin IHI turbos, high capacity oil pan, 380cc injectors, FMIC, fuel pump, and custom exhaust manifolds. The Semi-Full kit has everything in the complete kit, less the FMIC and oil pan. The Basic kit has everything the semi-full kit, less the fuel components. People have made upwarsd of 550+whp with the Power Enterprise Twin Turbo Kit.

Some of the downside is availability. Power enterprise is not known to have these on the shelf. So there usually is a wait for it. Also it is more on the expensive side. Not as expensive as an APS Extreme Twin Turbo kit, but close. This kit would max out a roughly 700whp, so BIG HP is not a goal with this kit.

With a proper kit, and the right supporting mods, people have made up to 620whp with the Power Enterprise Twin Turbo kit.

Fastest Current 1/4 mile time with a Power Enterprise Twin Turbo Kit: 11.939@116.73mph 1.740 60ft