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Any Ppl Change Header On 350z /v35?

waiwng38

By waiwng38,
in General Automotive Discussion

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Johnny Veteran

Johnny

Posted
Posted

would have to add an aftermarket ecu to get the most out of the headers - tune for 98oct fuel, more timing, better afr and you should get a nice gain from the large capacity engine; specifically low to mid range torque (maybe 15kw difference all through the rev range) peak power id expect 15rwkw or so but the drivability would feel better.

Did the NA tuning thing on my old NA r33, i know diff engine etc but was a 10kw gain in the midrange which made all the difference in everyday driving.

mad082 Grand Master

mad082

Posted
Posted

it really comes down to the car. i know some makes where changing the headers don't do squat because the cams are where the restriction lies (3.5L magnas are a perfect example) yet other cars can make a massive difference (such as SSS pulsars where the car is totally different to drive afterwards)

scathing Grand Master

scathing

Posted
Posted

The standard 350Z / V35 exhaust manifolds are not fantastic:

320px-Stock_Exhaust_Manifold.jpg

The biggest restriction is in the catback though. Most people will find 15-25rwkW in the catback, but doing the extractors with the catbank in place won't see more than 5-10rwkW.

If you've done the catback already and you're planning on staying NA its a reasonable upgrade, as it frees the breathing up in the top end and makes the engine more willing to rev, but don't expect to see massive gains.

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