New Turbo Kit Sneak Peek(Ptuning)

[EAGLE5]

Originally Posted by Huehuecoyotl

Its a tiny 4 banger..

Isn't that exactly why you want a twinscroll? Quicker spinup and better top end. No downside there. If they're making their own headers, they can easily make it twinscroll. If I go turbo, I'll want the quickest spinup I can get while still making big power at the top. I don't want a 4k spinup. I want a 2k VW-style spinup or, better yet, a 1500k BMW-style spinup.

[sw20kosh]

Originally Posted by jsimon7777

Isn't that exactly why you want a twinscroll? Quicker spinup and better top end. No downside there. If they're making their own headers, they can easily make it twinscroll. If I go turbo, I'll want the quickest spinup I can get while still making big power at the top. I don't want a 4k spinup. I want a 2k VW-style spinup or, better yet, a 1500k BMW-style spinup.

You have big misconceptions of what twin scrolling can provide. lol

At most you will get 200-300 rpm quicker spool vs. a single scroll all else being equal.

[ptuning]

Originally Posted by robotvoice

Have you guys posted pics of your headers yet??

We'll try to get some pics up soon. We're still conducting dyno tuning/testing at this time.

[ptuning]

Originally Posted by jsimon7777

Isn't that exactly why you want a twinscroll? Quicker spinup and better top end. No downside there. If they're making their own headers, they can easily make it twinscroll. If I go turbo, I'll want the quickest spinup I can get while still making big power at the top. I don't want a 4k spinup. I want a 2k VW-style spinup or, better yet, a 1500k BMW-style spinup.

The added complexity of a twinscroll turbo setup may not be worth it until you get up to the GT40/42 and larger turbo set-ups. The GT30/35 turbos with a divided turbine housing have not worked well on the high revving F2xC S2000 engines. While the low and mid-range are improved, it will come at the cost of high rpm power. The divided housing on the GT3x's, while they do offer better VE at lower RPM's, become a restriction at high rpms and high power levels.

If you check on the S2Ki forums, you'll find that guys running twin-scroll manifolds are changing out their divided turbine housings for a standard turbine housing.

A super fast spooling turbo will not make good power on the top end. While a nasty low end torque curve will shove your passenger momentarily back into his/her seat when you nail the throttle, it's a flat torque curve with big horsepower numbers that will keep them pinned there.

[xxscaxx]

I can't wait for this thing to be finished up and out on the market. Good job Ptuning.

Eager to see the price on this kit.

[Sonolin]

+1

I traded in my auto for a manual, so once I have the funds I'll be going with either this or Vortech. LOL.

This looks almost irresistible. 300whp is my exact horsepower goal (although the base vortech is probably enough for me), and on pump gas! I don't think any other kit has achieved 300whp on 93 :O (please correct me if I'm wrong!)

[EAGLE5]

Originally Posted by sw20kosh

You have big misconceptions of what twin scrolling can provide. lol

At most you will get 200-300 rpm quicker spool vs. a single scroll all else being equal.

That's not what I've read again and again. A properly designed twin-scroll system with proper heads, cams, tuning, and turbo selection should outspool an open manifold turbo of the same power by a large degree and outpower an open scroll turbo of the same spool by a large degree. BMW's N55 shows off the awesomeness of a twin scroll.

If you skip the cams, turbo selection, and proper (equal length, tuned, divided) manifold, sure, you'll get little to no advantage with a twinscroll. It's harder engineering, and what works well with single-scroll doesn't always work well with twin. A proper system is probably beyond the abilities of most kit makers and tuners, but PT seems to know where the turbo should go and all about flow, so maybe, just maybe, they could pull it off. After doing all the math, they'd have to spend a lot of dyno time with different turbines, housings, headers, and tunes to find a combo that will obliterate the competition and lead to tuner domination. Well, maybe they wouldn't have to swap headers too much.

[EAGLE5]

Originally Posted by ptuning

The added complexity of a twinscroll turbo setup may not be worth it until you get up to the GT40/42 and larger turbo set-ups. The GT30/35 turbos with a divided turbine housing have not worked well on the high revving F2xC S2000 engines. While the low and mid-range are improved, it will come at the cost of high rpm power. The divided housing on the GT3x's, while they do offer better VE at lower RPM's, become a restriction at high rpms and high power levels.

If you check on the S2Ki forums, you'll find that guys running twin-scroll manifolds are changing out their divided turbine housings for a standard turbine housing.

A super fast spooling turbo will not make good power on the top end. While a nasty low end torque curve will shove your passenger momentarily back into his/her seat when you nail the throttle, it's a flat torque curve with big horsepower numbers that will keep them pinned there.

Those systems don't sound properly designed. Were they also swapping cams? Were they using the same housings as a single-scroll would use? A proper system should add to the low-end without hurting the top. Of course they could get things wrong and ruin the top in search of too much bottom end. Heck, they could probably ruin the top and bottom with a bad design. Most of twin-scroll's benefits, as far as I know, come from exhaust scavenging, which is damn hard to design for.

[Sonolin]

Question - Do you guys offer a more stealth look for the intercooler? (all black, no letters)

If I'm buying this I want a 100% stealth look.

[sw20kosh]

Originally Posted by Sonolin

Question - Do you guys offer a more stealth look for the intercooler? (all black, no letters)

If I'm buying this I want a 100% stealth look.

:P that 4" intake is anything buy stealth. And you are worried about the intercooler??? Hehe

[Marcoscrdo]

Is there turbo that gives slight horsepower boost? I want to buy turbo but i dont want it so powerful. Does that all come from tuning and the way settings are done?

[sw20kosh]

Originally Posted by Marcoscrdo

Is there turbo that gives slight horsepower boost? I want to buy turbo but i dont want it so powerful. Does that all come from tuning and the way settings are done?

The beauty of a (properly sized turbo) is that you can adjust the boost pressure to fine tune your horsepower requirements with the turn of a knob (boost controller and proper tuning).

Ex.

5 psi = 50 hp increase
10 psi = 100 hp increase

[Marcoscrdo]

Originally Posted by sw20kosh

The beauty of a (properly sized turbo) is that you can adjust the boost pressure to fine tune your horsepower requirements with the turn of a knob (boost controller and proper tuning).

Ex.

5 psi = 50 hp increase
10 psi = 100 hp increase

Oh okay sweet!

[Sonolin]

Originally Posted by sw20kosh

:P that 4" intake is anything buy stealth. And you are worried about the intercooler??? Hehe

Yea... Well I'm hoping it won't be so bad with the all black stealth color..

But idk the power of this kit makes me want to just worry about smog when the time comes.