DIY: Z1 Intake Plenum and Spark Plug Swap [Picture Heavy]

1cleanZ

Can you explain both of these statements??? Between 4500-5k RPMs, where the M370 is known for its low end tq gains, the Z1 manifold is clearly almost 10whp AND ft/lbs of TQ lower!!???

Its all going to come down to opinions of "which is better" because different people have different wants out of the manifold(top end whp, or lowend midrange TQ). The Z1 Manifold has some clear gains up top over the M370, but are those truly "gains" when comparing to the M370, or just avoiding losing top end AND losing low end vs the M370.

The Z1 needs to be compared vs the OEM manifold, not the M370 to get true gains vs OEM.

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synolimit

That's only 500rpm and probably a MAF spike. You wont be able to feel that or compare it cause look at 4000-4500rpm. It says the OEM made the opposite vs 4500-5000rpm. Hence why run 7 and run 12 both make the same TQ.

I wouldn't say it's clear, what else was done? Do we believe this with no other data? I hate peoples belief sometimes in a big company that what's put down on paper must be 100% true.

I did this already but I compared the OEM mani vs a ported upper, lower and ported throttle bodies. Theres a reason they won't show you OEM vs just a ported upper (1-2hp maybe). My testings not complete though. We will redo this soon with this cars cats remove.

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13 370z-

John@Z1

Way to plug yourself again. I see you on every Z1 plenum thread, after you purchased our plenum to see how far you could port your own. Must be a nice coat tail ride. Since you are now a sponsor please try to carry yourself a little better. We expect more out of The370Z.com sponsors.

To answer 1cleanZ. I tell all that the Motordyne is better for low end while the Z1 is better on topend. We spend more time on the top of the graph at the track and on mountain runs.

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synolimit

I never purchased your manifold for me, I don't own a HR motor. That was a customer in Dubai that did who bought our TB's and lower. And check your dates Jon. I first had stuff ported for just me months before and my mani was already done and installed before I ever started doing it for others!! The porter I have do this lives in Indy and never saw your mani. Kinda hard to coat tail isn't it? Go ahead and check your dates when he bought and then check my date when I started the porting thread. I'll wait....

And I'm sorry, I didn't know you were the only one allowed to do something. O and since I started porting the TB's and lower first, does that mean you're coat tailing off me?

We are also finishing up flow bench testing now and we dynoed the stock vs ported stock, I haven't seen either from you guys so you sure you want to call me out?

And I'll continue to conduct myself the way I do. If I feel threatened, attacked, called out, trolled upon etc I'll respond in a way that's equal and to put them in their place they need to be at. And if I call someone out like you just did I'll at least have my facts straight. I'll ask you to do the same.

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13 370z-

JARblue

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