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Discussion Starter · #1 · (Edited)
Until our ecu is cracked and properly tune-able, I'd like to investigate a NA build that the ecu can accommodate.

Intake: Takeda to preserve the dual intake function

Header and exhaust: need a free flowing option that includes cats. Nothing annoying or much louder than stock at low rpms.

Port and polish: intake and throttle body. Grimm speed I believe is doing it for elite?

Voiding the warranty: higher compression pistons? I haven't seen these anywhere. Connecting rods. Meth injection maybe?

Mostly looking for suggestions on properly building an NA ISF. What parts and mods you have found available that would help the build.

The goal is to retain the refined Lexus appeal with out extra gauges or excessive noise.

Edit: if you are interested in NA builds, a lot of info is out there for the 350z and others. http://www.350z-tech.com/zwiki/Engine_Modification_Guide_-_Naturally_Aspirated
 

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elite has plenty of parts available. and they installed the aquamist HFS-3 system into my car.
 

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Discussion Starter · #3 · (Edited)
I'm waiting to see your results. :) since the ISF is my daily driver, I was looking to slowly build it myself. If all is well with your car, I'd definitely use Elite to do the engine build. They seem to be the most knowledgable.

Does elite's headers and exhaust use cats? I may be wrong, but there doesn't seem to be an off the shelf headers, high flow cats and exhaust.
 

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no cats in the headers, cayman had some installed on his joe-z exhaust but other than that none of the headers or exhausts (that i have seen so far) have cats.
 

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Im about to do most of that... il let you know how it goes
 

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Excellent! I'd be interested in hearing the details on the cat setup. Do you plan on modifying any internals?
No im doing intake, intake manifold, headers, catback with custom high flow cats. I put down 361hp over 320 ft lb with the injen intake... header and exhaust numbers coming soon
 
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