He's not opening the wastegate. Before commenting further, I suggest you develop a better understanding of the topic you are attempting to argue about.

 

Lol @ referencing gregs video

 

great numbers!! I think you would be a good candidate for the skunk 2 manifold. On a setup like yours I bet a higher flowing IM could net you 280+

 

nope

the new junk2 nutswinging is starting to get really old. esp since we've yet to see any conclusive evidence of it's superiority

 

lol, notice i said "could". Of course its speculation on my part but I dont see why not. Im not swinging from any nuts just stating my opinion from 13+ years of miata experience.

 

I don't usually redline the engine and when pushing it, shift around 6k anyhow. So I don't think gaining a few hp between 6-7k will be beneficial to me.

I am probably going to dial down the boost a bit to around 15psi and leave it there. The engine and turbo feels happier there, not being pushed too much.
Should be about 250hp and it's plenty enough power. I'm already spinning 2nd gear, even with my tall gearing. 5spd and 3.9.

 

for sure man 15psi from a 2560R is a very fun car. Past 15psi you are really starting to spin it past its happy place anyways.

 

we both know this speculation is downright silly, esp since it's been stated (by various people) in at least a few threads now.

next thing you know it will be regurgitated by the n00bs as a definitive fact. no idea why you even mention the experience part. if anything it makes you look bad speculating on a new and untested product.

OP, I think the handful of ponies you'll give up by lowering the pressure will be more than worthwhile by putting much less stress on the little turbo. good idea

 

We will just have to wait and see, i gotcha.

 

Solid setup!

 

Hmmm.

Has your VVT been tuned? You'd maybe lose a bit less up top with a bit more fine tuning there, no?

Sounds like it's time for a 2871

 

VVT is 'turned off' up there.

 

Didn't notice that, thanks. That could have something to do with things!

 

yeah, vvt is only tuned for low end and midrange and up top it's basically completely off or fully retarded.
What it does is adds low end and mid range torque, zero effect on top end power.

no 2871 for me. 2560 at 15-16 psi is plenty of power.

I'm already spinning 1st and 2nd. Anything more is just overkill and not needed on a miata.

 

Umm, you don't actually understand how vvt works. Please read up

 

I misunderstood his comment 'up there' referring to the entire tune vs 'up there' referring to the higher revs. Makes more sense now lol.

 

At idle the VVT is in a 'resting' position. As you approach the midrange the VVT moves the cam, more with more load, and by the time you're at 6000rpm the VVT is back in its resting position until redline regardless of load.

Your peak Hp is at an RPM where the VVT has little to no effect.

As a result you won't increase the peak RWHP by 'tuning VVT'.

You follow me?

Dann

 

He doesn't follow, it goes in one eye and out the other.

 

Never responded to this comment. Thanks for the explanation, sir!
I think I'd read about this before, but this made it click for me. Certainly explains why the vvt head helps with the 'midrange' then haha.