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spacer recommendations

1487 Views 4 Replies 4 Participants Last post by  dkmura
would you recommend this spacer? and is the ISO necessary?

Motordyne Engineering 5/16in ISO Thermal Plenum Spacer Nissan 350Z - 516I/Z
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Both are good. ISO is not necessary but it does act as a layer of insulation to stop heat from being conducted from the engine block into the runners and plenum. How much good does it do? I can't really say.

If you like the sound and look of the exhaust, get it. Those are the most important factors. Unless you plan to go FI in the future. Then you might wanna look into 3" systems.
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