Before you start ordering aftermarket parts, plan ahead! What’s your build goal? What voids warranty? (if that is one of your concerns), What parts require other component upgrades? What parts require retuning?
What doesn’t void warranty?: Catback Exhaust, Midpipes, and 2.75″ Intakes.
What requires tuning?: Aftermarket Downpipes, Injectors, and 3″ Intakes. This will also void your warranty (well it depends what breaks down, anyways). You cannot replace your downpipes, or upgrade to 3″ intakes without getting bigger injectors and a tune. Your car will run so bad, and will definitely go on limp “safety” mode.
Must have component parts?: Anything beyond Exhaust, Midpipe, and a small 2.75″ intake will change the cars’ ECU/calculation behaviors, and add more boost. This means that you MUST get a retune, and upgrade your factory injectors. The 570cc injectors usually max out at around 530whp (14 – 15psi).
Your build goal?: Do it right by figuring out your build goals (whp level? trap times? track only? and so on…). In my opinion, you’ve got 3 options, or stages, when it comes to upgrading/rebuilding your GT-R.
– 1st option: Full bolt-ons, adding all the plug & play parts, without the need of upgrading the motor, transmission, or turbos. Keeping the power levels around 600whp/600wtq. (Watch – What is FBO)
– 2nd option: and my least favorite, is (FBO + upgraded turbos & clutch) or (FBO + upgraded motor & clutch). Many owners start with upgrading their Turbos first, and then rebuilding the Short Block at a later stage to avoid paying a lot for doing both at once. I call this the “Ticking Bomb Setup“. Upgraded Turbos mean more PSI, whp & wtq, however going beyond 600-650wtq on stock internals will damage rods/pistons and so you’ll have to limit down WTQ.
Upgrading the Short Block allows up to 900+WTQ, but factory turbos only handle 20psi. So again, limiting down. Basically you’re paying for upgraded parts, yet limiting down to a little more than FBO levels.
^For more details on this option (Read This)
– 3rd option: Built Motor, Turbos & Transmission Upgrades. This falls under many levels & parts needed, depending on your power goal. But in general, this is where you will have to upgrade your engine internals, clutches, gears etc… to handle your power goals. (The sweet formula for a 1,000hp Build)
I went with option 3. Here’s my Build & Parts list–> Alpha 9 Build
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MAJJ GARAGE 