SOS Turbo kit
Joined: Oct 2007
Posts: 3,121
Likes: 75
From: Los angeles
Thank you all for your feedback! Unfortunately, there is some bad information still lingering from prior threads where a GTX3576 was chosen against our recommendation based on the customer's goals. That turbocharger created a flat power curve above 7000 RPM exactly has the compressor map says it would. For power above 150 WHP gain, we suggest the the GT3582R. We have many customers running this turbo making well over 500 WHP with this turbocharger.
A forced induction system is always about compromise including issues regarding packaging constraints.
We designed our system specifically for the customer that values a well engineered system that produces a 150-300 WHP gain that is actually usable and does not degrade the driving experience of the car. Above this power level, the kit wasn't designed for these peak numbers and there are other options in the market that may be better suited for this type of customer.
For this power capacity, this is one of the fastest, if not the fastest spooling system on the market. In addition, it is the only one that we are aware of that does not require relocation of A/C components, the battery, fuse box, remote mounting the oil filter, or adding an electric scavenge pumps. Just as important as performance - the quality of materials and build quality has stood the test of time on daily driven and track driven vehicles.
Thank you for your interest, your support is very much appreciated!
A forced induction system is always about compromise including issues regarding packaging constraints.
We designed our system specifically for the customer that values a well engineered system that produces a 150-300 WHP gain that is actually usable and does not degrade the driving experience of the car. Above this power level, the kit wasn't designed for these peak numbers and there are other options in the market that may be better suited for this type of customer.
For this power capacity, this is one of the fastest, if not the fastest spooling system on the market. In addition, it is the only one that we are aware of that does not require relocation of A/C components, the battery, fuse box, remote mounting the oil filter, or adding an electric scavenge pumps. Just as important as performance - the quality of materials and build quality has stood the test of time on daily driven and track driven vehicles.
Thank you for your interest, your support is very much appreciated!
I can assure you that the gtx3576 has no problem making big power high in the rpm band. Here is my personal dyno chart of my gtx3576r with a t3 .63ar hotside with a sidwinder manifold on a bone stock f20c. As you can see it makes 450whp on straight pump gas and 617whp on e85. The power never peaks or levels out even at 9,000 rpm. on the 91octane tune it makes 380whp at 7,000rpm and 450whp at 9,000 rpm.
Personally i love the sos turbo kit. It wont be fast on pump gas but with e85 it will make more than enough power. It was designed to be able to go on a road course. With a sidwinder manifold there is way to much heat from the turbo manifold to be about to track the car.
Thread Starter
Joined: Jul 2007
Posts: 28,386
Likes: 107
From: Right Here.
I read the whole thread from Rain H8tr and you have beat ur point to death, SOS.
Let me ask this. what needs to be done so that the torque doesnt fall flat at 7k rpms. go with the gtx3582r? The gt3582r? On PUMP 93 octane?
I don't want to reach readline and it die off At 7k. I want it to pull all the way.
How do you correct this.
Thanks.
Let me ask this. what needs to be done so that the torque doesnt fall flat at 7k rpms. go with the gtx3582r? The gt3582r? On PUMP 93 octane?
I don't want to reach readline and it die off At 7k. I want it to pull all the way.
How do you correct this.
Thanks.
Joined: Oct 2007
Posts: 3,121
Likes: 75
From: Los angeles
The SOS turbo kit is a combromise. It uses an evo 8/9 style divided twinscroll manifold and turbine housing. By doing this this kit will have amazing low and power and will have the best spool and transits respons between shifts. It is a very low side mount setup. Which means that it will have the lowest engine bay heat out of other kits. You don't have to relocate anything and you won't have to worry about melting anything in the engine bay. Great kit for open lapping on a track.
But the evo8/9 housing hurts top end power. With this kit you will loose about 50whp on pump gas compared to any kit that is t3 flanged with a proper merge collector on the manifold.
But the evo8/9 housing hurts top end power. With this kit you will loose about 50whp on pump gas compared to any kit that is t3 flanged with a proper merge collector on the manifold.
Joined: Dec 2007
Posts: 1,247
Likes: 0
From: City of Baked Beans
As you already know, the Ptuning kit is an amazing kit! Not taking anything away from the SOS kit; it's track-purpose built. For circuit/autox, I believe the SOS is the best kit to have.
Both kits are excellent, especially on e85...I can understand why it's always a hard decision for most between the two.
Thread Starter
Joined: Jul 2007
Posts: 28,386
Likes: 107
From: Right Here.
Hey man! Long time! Glad to see the old heads still runninf around lol.
i def choose the ptuning kit for sure. Just not sure if they will have any available by the time i go boost. So im looking up for a back up option.
Thanks riceballs. I had a feeling it was that. apparently, to ensure that the turbondoesnt die off at 7k, is to get the gt3582 and they claim it will go all the way to redline.
I did see a video on youtube if a 06 car doing 426 whp/309 tq at 15 psi. I dont know what dyno it was and didnt see a graph. I hope it was 93 and i hope it pulled all the way to redline.
I think it was Puerto Rico. Anyone?
i def choose the ptuning kit for sure. Just not sure if they will have any available by the time i go boost. So im looking up for a back up option.
Thanks riceballs. I had a feeling it was that. apparently, to ensure that the turbondoesnt die off at 7k, is to get the gt3582 and they claim it will go all the way to redline.
I did see a video on youtube if a 06 car doing 426 whp/309 tq at 15 psi. I dont know what dyno it was and didnt see a graph. I hope it was 93 and i hope it pulled all the way to redline.
I think it was Puerto Rico. Anyone?
Registered User
Joined: Jan 2009
Posts: 449
Likes: 2
I read the whole thread from Rain H8tr and you have beat ur point to death, SOS.
Let me ask this. what needs to be done so that the torque doesnt fall flat at 7k rpms. go with the gtx3582r? The gt3582r? On PUMP 93 octane?
I don't want to reach readline and it die off At 7k. I want it to pull all the way.
How do you correct this.
Thanks.
Let me ask this. what needs to be done so that the torque doesnt fall flat at 7k rpms. go with the gtx3582r? The gt3582r? On PUMP 93 octane?
I don't want to reach readline and it die off At 7k. I want it to pull all the way.
How do you correct this.
Thanks.
Thread Starter
Joined: Jul 2007
Posts: 28,386
Likes: 107
From: Right Here.
Originally Posted by HMFIC' timestamp='1429909051' post='23590313
I read the whole thread from Rain H8tr and you have beat ur point to death, SOS.
Let me ask this. what needs to be done so that the torque doesnt fall flat at 7k rpms. go with the gtx3582r? The gt3582r? On PUMP 93 octane?
I don't want to reach readline and it die off At 7k. I want it to pull all the way.
How do you correct this.
Thanks.
Let me ask this. what needs to be done so that the torque doesnt fall flat at 7k rpms. go with the gtx3582r? The gt3582r? On PUMP 93 octane?
I don't want to reach readline and it die off At 7k. I want it to pull all the way.
How do you correct this.
Thanks.
I wouldn't call the KW the best kit on the market. I would call it the best kit for your personal needs.
I'm a turbo guy. I love the feeling of the turbo's. I could make less power on a turbo kit, and have more fun that a higher hp SC kit. but that is me personally. I don't track it, so I'm not looking for the linearity of power, turbo kits can be just as reliable as well.
However, according to SOS, in order for it to NOT drop off after 7k, is to opt out for the GT3582 as they say would allow to hold until red line. I don't know if that's for just ap2's or both Ap2's and ap1's.
Thread Starter
Joined: Jul 2007
Posts: 28,386
Likes: 107
From: Right Here.
They also said the Gt3076 is their standard option. but if you wanted more power on pump, then go with the gt3582.
Either way, I'm just not used to seeing only 400whp on a gt35 turbo when smaller turbo's are doing much more.
Joined: Dec 2009
Posts: 2,099
Likes: 17
From: Miami
^ maybe i misunderstood them. But thats what i remember. I wonder how the standard turbo runs on the street. 380whp is still nice. But if you can notice a power drop from 7-8k rpms on an AP2, that would suck.