6262-powered 2.0 L Street Monster

[UT_EvoX]

No, that setup is way too complicated and unnecessary for an external wastegate. I have mine setup per Grimmspeed's instructions, like this (if you replace the internal wastegate actuator with the bottom EWG port):



Two lines, no tees, it's a much simpler setup and works just as well for 95% of people.

[iamvisitor]

thanks a lot.

Very good result on your car,

how much load do you rich on peak boost and rev limit?

thanks a lot.

[UT_EvoX]

Originally Posted by iamvisitor

thanks a lot.

Very good result on your car,

how much load do you rich on peak boost and rev limit?

thanks a lot.

I have my MAP tables so that I'm hitting 370 load tapering to 345-ish. That should be pretty much in line with what it would be on the MAF.

[SHOWEVOX08]

I would probably take the video down before you get a warning about it...

[ElementX]

I didn't know hp had a specific sound... I think you just found a new way to dyno a car.

It's official: Everyone with an ETS V2 extreme or SC extreme has 2000 hp!

[UT_EvoX]

Originally Posted by E-Spec

The sky is falling!!! --- We AGREE!!!---

This is what 540 looks/sounds like. (BTW -- car trapped 128mph on 93 octane at 27-28psi)

http://www.youtube.com/watch?v=qlyBLcY1Kz0

What is this vacuous bullshit? Stay out of my thread. kthx

I enjoy a quiet-ish Evo... In fact, I cannot wait until I further quiet this beast down with a dual exit muffler with a resonator and such.

[UT_EvoX]

From my latest data log of the top of 3rd gear, with the previously posted MIVEC maps and a lot more WGDC up top (not getting me anything, really).

"DynoJet" corrected:


"DynoJet" uncorrected:


"Mustang" corrected:


"Mustang" uncorrected:



So, considering that it's been shown time and time again that correction factors at altitude are actually and effectively accurate due to lost compressor efficiency and other factors, saying 600 WHP is fair.

By the way, the correction pressure (25.28 inHg) was taken straight from my barometer logging item.

[Murlo26]

Not to add fuel to the fire or take sides at all.

But high altitude correction never seems to factor in correctly from what I have seen.

I believe SAE has a certain percentage cap where the corrections no longer apply. It's not linear in other words. So beyond a few percent it becomes skewed.

[chetrickerman]

Originally Posted by UT_EvoX

My new MIVEC maps, based very loosely upon some Hollywood shared with me:



I believe that before, with Hollywood's maps, I was seeing just way too much overlap up top and was actually losing boost pressure through the exhaust ports.

These new maps give lots of spool MIVEC everywhere, almost similar to what people typically did on the Evo 9; it should help transient spool a bit while keeping me from having too much overlap up top.

By the way, this is on Cosworth MX-1 camshafts.

Have you tried less intake advance and a little more exhaust retard up top?

You know, retard the centerline in the high rpm range to move the powerband to up top

[UT_EvoX]

Originally Posted by Murlo26

Not to add fuel to the fire or take sides at all.

But high altitude correction never seems to factor in correctly from what I have seen.

I believe SAE has a certain percentage cap where the corrections no longer apply. It's not linear in other words. So beyond a few percent it becomes skewed.

I'd like to see examples, because every example I've seen indicates correction factors up here are perfectly legitimate. From my own data logs back when I had a BB-X, to moderate turbo-converted N/A builds, and even 1000+ WHP Supra builds.

The funny thing is I used to be the engineer/math-head who tried to tell people correction factors at altitude are bullshit. Me: no, no, no you see the ambient pressure changes from 14.7 psi to 12.6 psi (for example), but manifold absolute pressure is only changing from 44.7 to 42.6 (for 30 psi boost). That's only a 5% manifold pressure loss, so a ~5% power loss!

Not so much, it turns out.

Fact of the matter is, the only way to keep your runs consistent in Utah is to use a CF. The logs I posted from today were 25.28 inHg - usually it's 25.7 inHg here. That's how much pressure varies from pocket to pocket of air in this valley.

Originally Posted by chetrickerman

Have you tried less intake advance and a little more exhaust retard up top?

You know, retard the centerline in the high rpm range to move the powerband to up top

I've thought to, but I think I might wait until my next dyno session to mess too much with my MIVEC maps. It's definitely a good idea.