anyone have a twin turbo from sts turbo,thinking about one,i heard they don't ruin your warranty,i have a 08,thanks for any help

 

Yes, it absolutely voids your warranty.

Do a search on this forum. You will learn more about sts vs aps vs tti turbo kits than you could imagine.

Also, I'd like to officially take this post to amend my official opinion of the STS stuff!

If you will be happy with 600ish at the wheels (and NO MORE power than that - this kit DOES NOT grow well!) and you are ok with a cheap kit (both in price and somewhat compromised build quality), then I see nothing wrong with an STS kit. For 98% of the folks that peruse this forum an STS kit will work very well.

Yes, I said it.

 

Let me paste what I said about the kit via PM to Dan so others can benefit from another opinion as well:


I will be honest to you: I don't like the STS kit. They make good power, they sound kinda cool, and most guys who have them like the kit, although I haven't seen too many people spend $8000+ on *anything* and not claim to like it afterwards... Its just that, engineering wise, it is the poorest way you could possibly try and add turbos to something; you have to try and spool them in the end of a 10 foot long pipe and then pressurize another 15 feet of plumbing before the boost gets to the motor: it ends up creating alot of lag that doesn't exist with engine mounted turbos. The air intakes are very low and STS gives you "socks" to put over the filter if you have to drive in the rain, and the oil line has to run for 20some feet via a scavenge pump that likes to quit and when it does the turbos are toast... I just think other forced induction options are better for the money. If you like turbos, TTI or APS are the way to go, IMHO.

ALSO, there is absolutely no form of foced induction that will allow you to keep your manufacturer's warranty. STS turbos are about as "bolt-on" as bolting on a new engine would be; it is still a several day install that is going to require MANY parts to come off the car and many new parts to get bolted on, and think about it; do you really believe you could turbocharge your car, make 200HP more than the factory ever intended you to, blow your motor or break the transmission, and then show up at the dealership and say: "Oh, those turbos? Nah, they are bolt ons, they had nothing to do with me blowing the engine and snapping the transmission in half at the dragstrip, fix my car for free" Unlikely... ANYTHING you do to your car that is not factory can and will result in warranty claims being denied for parts that are associated wih those modifications when those parts break. If you add any kind of forced induction to you car you should expect to foot any engine or drivetrain bill from then onwards...

 

Powerlabs is usually spot on - and I only have two issues with what he said:

"they make good power" - no, not really when compared with their competition. But that's a matter of opinion - again, 600 at the wheels will be enough for most.

"$8K pricetag" I got pricing on a kit for around $6,800 a few months ago. Maybe I got "special" pricing for some reason? I thought the kits were between $6K and $7K... If they are a penny more, then ABSOLUTELY DO NOT buy one. If you look at the kit (and I studied it extensively at PRI this last week), then you'll see it's about $1,000 worth of turbos, and maybe $1,000 worth of aluminum tubing and clamps. This is not near the quality of TTi or APS.

 

i got a quote for the STS kit for 7K, then the upgrade turbos 600, BOV 300, tuner kit like 1200. I think everything all said and done was about 9K.

and these prices are "dealer cost"...from what i am seeing this is pretty normal pricing for the sts kit.
i am suposed to order the kit tm and am having second thoughts to if i should go with the APS system.

 

Why would the STS kit be limited to 600?

 

james,

The turbos are TINY!

Sure, you can go bigger, but then lag becomes TERRIBLE.

$9K for an STS kit is an absolute joke. If you are about to drop $9K on a turbo kit, then call George or spend a LITTLE more for an APS kit. APS has Christmas pricing that's pretty sporty right now....

If you plan to make real power and want a really well-thought out kit, then you don't an STS kit. Please reconsider your decision.

 

Heres a vid from my GTO.

http://videos.streetfire.net/video/F...68L_121444.htm

 

fafnir,

Not sure where you're getting your info. I spent an hour at the STS booth 2 days ago at PRI studying their "Z07" setup. I've also ridden in several Z06's with their setup and I was not impressed.

I do believe you are mistaken on the turbo size. The turbo's I saw were 46 mm's AT best (I honestly don't remember their actual size BUT they looked like they were better at home on a lawnmower engine than on a Z06). This was the "Z06 Kit" that they had on display!

I further have to question your assertion when you say an APS kit lags (because of silicone couplings)! This tells me you have NO IDEA what you're talking about. Take a Ride in an APS'd C6Z - it's VIOLENT.

I'm not interested in turning this into a pissing contest because I've already won the argument. I own APS and TTi powered C6Z's and have a fair amount of experience with the STS kit. I know I'm right as far as TT kit superiority.

Your assertion that you can get 1,500 RWHP from the base kit is absurd. Furthermore, I promise you that any STS kit that can make 1500 RWHP would be FAR from drivable!

With all of that being said, I stand by what I said... For around 5 or 6 grand, if you can be happy (long term) with only 600 RWHP, then STS is a great choice for you.

 

Before I went FI, I thought 600whp would be more than enough. Unfortunately, it's not enough; I already want a lot more and I'm happy that my current set-up (procharger-D) allows for more power. I don't like being restricted or held back in how much power I can have.

 

fafnir,

Any kit utilizing GT25's on a Z06 is sub par.

Of course you can get large turbos and make killer power - rear mounts are great for an all out drag car! For a car that you can daily drive comfortably, large rear mounts aren't the answer. Period.

As far as APS and lag - I make over 700 lbs-ft of torque at 3500 RPM and over 1,000 lbs-ft at 4K RPM. I'm still not sure how you can say an APS car "has it's share of lag" - and this is on an 8.5:1 motor! It's snappier than any other car I've ever owned!

I suppose it's a matter of opinion on APS vs. TTiX. I honestly don't understand how anyone who has actually owned both kits could clame TTiX superiority. However, the TTiX kit is very nice and certainly capable of ~1,000 RWHP (as is the APS kit).

Long story short, buy the APS or TTiX kit and you'll be pleased if you want a 1,000 RWHP daily driver.

Buy the base STS for $5K-$6K if you will be happy with a 600 RWHP daily driver.

Buy the BIG TURBO STS kit if you want an all out drag car that will be pathetic on the street (and still not proven to be any quicker or faster than an APS or TTiX C6Z).

 

fafnir,

I appreciate your attempt to explain lag and the "perception of power" to me, but I'm pretty well versed in this area.

I'm sure that came off as arrogant, but I had to say it for emphasis. I know what the heck I'm talking about.

I will agree to disagree with you on TTiX vs. APS. The scavenge pump doesn't bother me in the slightest. It works like a champ (just as it was all designed to) and I'm not sure why you knock it - but to each his own.

I certainly am not looking to convince you to change any orders you've made. I'm a 1300 RWHP daily driver kind of guy, you're a 600ish RWHP maggie kind of guy. Diversity makes the world go round and I can certainly appreciate that!

Just out of curiosity, since you seem to know so much about lag, have you driven a C6 with the STS kit with the big turbos on it? THAT's lag! I would argue that the STS kit with the GT-25's (and I've driven a C6 with both the small turbos and the bigger 66's) is considerably laggier than an off the shelf APS C6Z kit.

I'll be surprised if we're still arguing after this post. I'm guessing you're going to agree with most of what I've asserted because I'm not sure you and I had very much to argue about from the get go.

 

I have a friend that has the STS on his C5. Two things that jump out at me are the way the turbos are lubricated (scary) and the sucker is LOUD!

 

well i have to disagree.(always someone..lol.) i have ran the Aps on car, (my personal gto, and others) and many other turbo kits. We now run the STS twin with the 60-1 turbos and will be shooting for high 8's out of it and 1150+ rwhp. and i know it will be easy to do. we do a TON of Turbo build here and the sts is a good design IMHO. the Air is tons colder by the time it gets up front. you DO NOT have turbo lag any worse than any other kit out there. all you have to do is wrap the headers and the exhaust and there is no more than any other kit. we have installed MANY of these and they all run great. Now dont get me wrong. the APS is a BAD *** kit by far. and the quality of it is top of the line. all there kits we have installed are. i ran one on my GTO and push it to 101 RWHP and 1024 RWTQ car was a beast. All im getting at is STS gets a bad rap for being at the rear of the car and people think that you will have all this lag from it but you dont. go ride in one set up right and you will see. and the oil system is no different that the APS kit, you have a inlet from the engine and a oil pump to get it back , no different!!!

 

No complaints from me... Like I've always said, it's not the best engineered system nor the cheapest but I get to keep my cats in the OEM position and they system sounds wicked (imo)

STS customer service is A++!

 

i am doing the STS kit with the 60-1 upgraded turbos in my 08 LS3 A6, and will be documenting the whole process. The build is going to actually be a pilot for a TV show. The kit should be here in a few weeks so stay tuned! we are also doing the meth, and a few other tweeks

the car is actually at the Vette doctors right now getting a FI cam and injectors.

 

Sounds like a very intresting build! please keep use posted when you start it.

also i hear of a few people trying some intresting things to reduce lag. have any of you guys heard about people running Twin scroll housings on the turbos and directing all the exhaust to just half the housing? then once you have full boost (fast as you are running a turbo with 50% AR) you run a wastegate that allows the exhaust to flow into the other side of the housing!.......

Chris.

 

Sounds like a recipy for boost creep... What you are saying is once you have full boost you keep running more exhaust to the turbine; it will keep making more boost then...
Also for what two twin scroll turbos cost you could just get regular turbos mounted up front...

 

the build is pretty much finished here is the build so far. it should be running tomorrow. FEW PICS.