New Turbo Kit Sneak Peek(Ptuning)

[bfrank1972]

Those are some pretty amazing numbers for 6 psi, well done guys. Curious - what's the technical explanation of that bump around 4500 rpm? Usually FI flattens out the torque dip. It almost reminds me of the twin sequential turbo dynos of the mid 90's.

Originally Posted by ptuning

I think a few people are again forgetting that our intercooler piping is shorter than ANY WRX/STi with a front mount intercooler, so this is a non-issue. Remember that a shorter intercooler pipe path with a lot of hard bends, kinks, etc isn't always better than one that may be slightly longer, but with much smoother radius bends, transitions, etc.

Furthermore, the benefits gained from our the exhaust side routing is well worth all the effort we put into locating the turbo where we do. BTW, if you look through the end of our 3" downpipe, you can see the turbine wheel.

This may surprise many of you, but even with the largest turbocharger of the bunch, we have the quickest spoolup and best low end torque curve of some of the more popular FI systems on the market. We've tuned or tested a few of the more popular systems so far.

Also, the video you see above was taken on wet roads. What you're seeing is throttle modulation. It's not our only promotional video, but rather another one for folks to see. I can assure you that the transient response on our turbo system is excellent. After all, we're only running off of a 6psi spring. It doesn't take any turbo system very long to transition from off boost to 5-6psi.

Below is our latest 6 psi spring pressure tune (back to stock header too and still on 93 pump gas). We're looking to zero in on our final base map so the tune is still not 100% complete.

The graphs compare our PTUNING turbo system vs. two other turbo and one other SC system. All dynoruns start at 2k rpms and use the exact same ramp rate (elapsed run time on the dyno).

[ciro]

almost enough money saved this is the one!

[nos145]

REQUEST>automatic transmission
don't make me threaten you guys come spring
*angel face*

[Dinko]

Any updates or new pictures for us?

[Calum]

How much stiffer is the 21 mm front bar vs. stock?

There's quite a few of us that think the stock sway bars are plenty, even when cornering forces increase greatly. And more to the point, too much sway bar will actual make this car harder to drive at the limit and lower overall grip because they wont let the suspension articulate properly and will even lift the inside rear wheel. As I'm sure you can imagine, lifting the inside rear wheel will kill the cars ability to put power down on corner exit. So, is there any chance of a bar that fits with your kit, but has the same spring rate as the stock bar?

thanks

[ptuning]

Originally Posted by Calum

How much stiffer is the 21 mm front bar vs. stock?

There's quite a few of us that think the stock sway bars are plenty, even when cornering forces increase greatly. And more to the point, too much sway bar will actual make this car harder to drive at the limit and lower overall grip because they wont let the suspension articulate properly and will even lift the inside rear wheel. As I'm sure you can imagine, lifting the inside rear wheel will kill the cars ability to put power down on corner exit. So, is there any chance of a bar that fits with your kit, but has the same spring rate as the stock bar?

thanks

Most people will eventually upgrade to at least stiffer lowering springs if not full coilovers. In addition, they will also often upgrade to heavier and wider wheels that increase the car's overall effective track width. This further alters the wheel's leverage on the suspension, which further decreases the factory bar's effectiveness in controlling body roll and handling balance. Once this is done, the finely tuned factory sway bar rates get thrown out the window and it's effectiveness in altering roll stiffness is greatly diminished.

While a stiffer front bar may add a little bit more understeer on it's own, the optional complimentary adjustable rear bar will increase the car's overall roll stiffness, while still allowing you to keep the car's front to rear handling balance.....depending on the what rear setting you go with.

We can look into building a front bar with factory rates, but we think the demand will be way too low to justify the up front costs for production. Unfortunately, there are a very few number of people running forced induction with stock wheels and suspension.

[ptuning]

Our first batch of turbo water cooling, feed, and drain lines being assembled using only high quality components.

[Calum]

Originally Posted by ptuning

Most people will eventually upgrade to at least stiffer lowering springs if not full coilovers. In addition, they will also often upgrade to heavier and wider wheels that increase the car's overall effective track width. This further alters the wheel's leverage on the suspension, which further decreases the factory bar's effectiveness in controlling body roll and handling balance. Once this is done, the finely tuned factory sway bar rates get thrown out the window and it's effectiveness in altering roll stiffness is greatly diminished.

While a stiffer front bar may add a little bit more understeer on it's own, the optional complimentary adjustable rear bar will increase the car's overall roll stiffness, while still allowing you to keep the car's front to rear handling balance.....depending on the what rear setting you go with.

We can look into building a front bar with factory rates, but we think the demand will be way too low to justify the up front costs for production. Unfortunately, there are a very few number of people running forced induction with stock wheels and suspension.

I'm not going to argue the merit's of the stock sways, I was just trying to bring to your attention that there may be a market for this. But you'd be a much better judge of that then me. If you do feel like looking into it, plenty of the guys that are racing, and are fast, are doing so with stickier & wider tires, and the stock sways. Of course, I can certainly understand that the market would be low.

Thanks for the detailed reply.

[Dephective]

Rather than go through 31 pages, was pricing discussed anywhere?

I'm in the market for FI in the next month or 2 when I can get some time to set aside for it, and just gauging my options. I know of PTuning from S2Ki so that bumps them a little higher on my list of priority kits.

[MooKz]

First post.. First link

[Ross]

They also have pricing available on there web site.

[sw20kosh]

So you show lots of pictures of that massive turbo... now when are you going to show us the smaller turbo and its hidden location? This is a sequential turbo system right?

Dat torque humps!

[bfrank1972]

Originally Posted by sw20kosh

So you show lots of pictures of that massive turbo... now when are you going to show us the smaller turbo and its hidden location? This is a sequential turbo system right?

Dat torque humps!

I made mention of that hump a while back but got no response - I'm curious as well to why the curve looks that way.

[jamesm]

that spool does seem a bit incredible (impossible?) for such a large turbo. it'll be interesting to see some third-party pulls. it's easy to spool a big turbo on a load dyno. i'm definitely interested to see some road logs of map/rpm/load. i'd bet that without artificial load the spool looks more like a gt30 on a 2.0l normally does. then again my 28 spools way quicker than i expected too, so maybe it's just the fa20 kicking ass... who knows?