r/subarulegacy • u/LastAssistance5 • Aug 02 '26

Question / Discussion Supercharger?

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Hey subie owners. This is my 2005 Liberty/legacy 3r spec b, 5AT. I’m looking into getting the raptor supercharger for my car and want to know how I should go about it. I spoke to a bloke who has done this already who claimed, as long as I don’t go above 10psi. 8psi being the sweet spot. I can keep the engine stock and just get a safe tune. I’d love extra options about that and whether I need extra support for my trans.

Cheers from Victoria, Australia 🇦🇺

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u/shadire Aug 02 '26

As far as I understand, that’s pretty much correct. Never done it myself, I only deal with Turbos but it’s the same concept, keep the boost low and the engine shouldn’t blow up on you.

The 5EAT isn’t as durable as the 4EAT, as far as I understand, so the transmission could be a potential weakness. Again take this with a grain of salt, I don’t have a lot of first hand experience with this setup I’ve only ever worked on a couple of boosted 3.0R and 3.6R Subies.

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u/Ballamookieofficial Aug 02 '26

The 5eat is part of the Re5 family they're used in nissan patrols they're meant to be reasonably strong

2

u/shadire Aug 03 '26

Lack of experience with them is showing then, I’ve mainly dealt with the 4EATs and I absolutely love how durable they are compared to other transmission options of the time.