It would help for sure, but that would require testing to prove. I deal with 4 cylinders engines all day and I have seen 10%whp gains on our dyno with tuning from upgrading to a larger throttle body... 64mm to 70mm.

I'm not sure what the diameter is on the stock Z, but I could almost bet there would be some positive gain there.

A 64mm throttle provides enough air for a 2L 4 pot @ 225hp (factory throttle on Civic type R) I picked up 5hp with a 70mm.

So the throttle on the Z would have to be like sub 60mm to choke the 1.8L 3 Pot on each side

Someone should jump on this ...

if it's worth 10 or more whp, I agree.

I'll try these as soon as I buy their $14k brake kit, $7k exhaust, and $3k strut tower bar.

lol yeah, 3 grand? ummm... is this worth like 50 or so whp?

I want the ISF style exhaust. SICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!

How about putting a GTR throttle body ?. would that work with a retune ?

^ GTR tb = 370Z tb

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Actually they are the same and arent the same ;)

The GT-R can be bored out much larger than the 370z ones. Max bore on 370z is around 64-65mm. GTR around 70mm

ps: 4 year old thread lol