I'm pretty sure the SOS kit spools slightly faster and has better response thanks to the twin scroll design. So you can't say Ptunnings kit is better at EVERYTHING. Not needing an EWG, oil scavenging pump, different motor mount and different rad fan is also a benefit imo.

Both kits have their Advantages and Disadvantages.

For myself I'm really liking what the Ptunning kit has to offer compared to other kits atm.

 

Ok i may have over stated that aspect (boost spool up time). But comparing these directly i think we are to the point of spliting hairs. The sos may spool sooner mostly because of the extremly short runners more so than the divided housing. However the harsh 90 degree bends that are on the sos manifold do not promote quick up spool.

Anyways, yes each have + and - about each. But i feel when your spending this much for one of these kits, it is a no brainer to get a ptuning. More for your buck imo.

Sent from my Samsung Galaxy S4

 

 

Kueda, after mentioning those benefits the SOS kit has over the PTunning kit could you elaborate on what has you siding w/ the Ptuning kit over the SOS kit? I'm currently on the fence between both kits.

RAIN, I'm hoping you acquire the PTuning kit w/ a similar setup to your SOS turbo setup. It would be interesting to read your personal review on both. What are your power goals? Your SOS setup was short-lived, so what are you looking for out of the PTuning kit that would make it better overall?

 

Thanks for chiming in Daryl.

Yes, Metros was our first track customer. We installed the first production PTUNING turbo system on his AP2 on a Wednesday and developed a dynotuned K-Pro map running 13.5 psi on a Thursday. He picked the car up on Friday and ran Saturday and Sunday events at Summit Point main using our oil cooler system and stock rediator. 30 minute HPDE sessions were no problem that weekend as the temps were cooler in the fall.

Even though he didn't have cooling issues in the fall, he opted to play it safe and upgrade to a Koyo radiator over the winter. He signed up for several HPDE events over the course of the next spring and summer. The weather in VA can easily get over 90 degrees with very high humidity during the hot summer months too.

Some things to note that may explain why we have had success running our turbo system on a road course.

- We have the lowest mounted turbo on the market. Less radiant heat into the engine compartment.
- Our short runner manifold radiates significantly less heat than a manifold that uses yards of weld-els
- We use a thin wall stainless steel Tial turbine housing that not only is very light, but also radiates significantly less heat than a thick cast hotside.
- We selected a thinner 70mm core which allows for much better airflow to the radiator. To avoid compromising intercooler efficiency though, we went with the tallest and widest core possible that doesn't require frame notching.

BTW, thought I'd add some food for thought. S2000 motor mounts can fail on completely bone stock S2000's, especially when the car sees autocross time. Depending on how you view things, having an upgraded motor mount included with your turbo system isn't such a bad idea.

 

hurry up and get one so you can do a back to back comparison

 

Toan,

Thank you for the reply on the motor mount photograph, I feel much better now. Im not sure I want to have my brand new Kpro compatable valve cover re-powder coated, perhaps Ill think about the black. Also, just a thought but I think you should add more info to your website about the turbo kit for the S2000. A close up picture of that jewelry welded exhaust manifold should be on there as well as the picture of the custom engine stand with the engine and turbo kit installed showing all of the detail of the kit. For such a piece of art work to be offered to buy, there is hardly any useful information available without coming to threads on S2ki.

Mr.60trim, I do not know if I will be the guenea pig on the 3576. Theoretically it should do better, but Ive was the pig with the SOS kit and I found out the hard way what can happen when you fork out the cash to try something different (but was tested to work great on other turbo kits). I highly recommend a call to Toan at Ptuning. I spoke to him for 1.5 hours a few weeks back about what I went through with the SOS kit and how the Ptuning kit is in comparison. To efficiently talk about the kit/kits it is much easier on the phone. Me personally, just from a pricing standpoint the entry level SOS kit is 5,766.xx and the entry level Ptuning kit is 5,995.xx, for 200 dollars more you get a heck of a lot more for your money.

Petwabit, I plan on making a purchase in spring time, depending on what I do.

 

Thanks for the response! I'm certainly a little skeptical that the Ptuning kit will run in 90+ degree heat w/o cool down laps, simply based on others' experiences. Hopefully I'll get some firsthand experience this upcoming season w/ keeping a turbo s2k cool, so we'll see. The advantages you listed are certainly welcome and good to know for sure though. I agree that the "sidewinder" type manifolds have their share of problems due to heat (which make them a poor candidate for track s2ks). Some folks can't seem to keep water temps down with s2k turbos in hotter temps w/o removing the condenser, v mounting the IC, and adding shrouding.

I agree with you on the OEM mounts, it's a fair point and perhaps not necessarily a con replacing it.

Mr.60trim,

I think the clear advantage of the Ptuning kit is power. A mini tubular w/ a merge collector will outflow and be more efficient than a log style like the SOS. Like I said, I think you can't go wrong with either kit, just depends what suits you.

 

I think both turbo kits are well thought out and each offer their own benefits. It all comes down to personal preference, where you plan on driving and what goals you are trying to achieve.

For anyone planning on tracking there car often I think the best option is low side mount turbo. That narrows the choices down to only a handful of kits. For someone looking for a simple bolt on kit that offers super quick spool and 350-390 whp on pump gas I think the SOS kit is an excellent choice.

For me I am looking for a bolt on kit that requires minimal modifications, at least 400 whp on 94 oct and full boost by around 4,000rpm. I like SOS products but I think there current kit will have difficulties hitting 400whp on a GT30 sized turbo using pump gas. While the P-tunning kit has customers easily hitting 400-450whp on pump gas. I also really like P-tunnings ultra low mounting location design with their near straight downpipe. I mentioned the use of an EWG, oil scavenging pump, after motor mount and aftermarket rad fan as a design draw back over SOS. It is only a drawback when looking for the simplest most straight foward bolt in design. Otherwise they are merely differences in design, additions that were necessary to complete the kit to produce a specific result. At first glance I was not a fan of having to replace a factory motor mount, but Toan made a good point most people who auto x or track there car will eventually at some point need to replace the factory motor mounts. Lastly EWG's have always been the best option for boost control and I have always been a big fan of screamer pipes.



^ What he said.


RAIN H8R, I'm looking forward to your results and comparison.


I decided I'm going to hold off on going FI this spring and upgrade my suspension instead. I'm waiting to see more turbo kit results as well as some V-mount intercooler options to hit the market.

 

Toan,

I agree with RAIN H8R, I think the Ptunning website could use some revamping with some additional information on your awesome turbo kit. I was a bit disappointed by the website when I initially searched up the company. It is only here on S2ki that I found all the information I was looking for.

Question, would you guys consider producing or selling an optional drivers side motor mount? I could just order any aftermarket drivers side mount but I would prefer one that is the same durometer and look as the one that comes in your kit.

Also please push the idea of P-Tunning V-mount IC kit on your colleges.