Hello SmokinVette enthusiasts! This is our product review for the STS twin turbo system. When it comes to turbo systems for the Corvette there aren’t a whole lot of them to choose from. There was one thing that we had heard a lot of when we started looking at the STS system and that was the so called turbo lag. We were out to see what all this talk was about!
When we first got the STS Turbo system delivered I must say that at first glance it was quite overwhelming. There seemed to be a thousand parts and thousand feet of wiring! At any rate, we separated all the parts and made sure that everything was accounted for. Now it was time to start the install.
Before we could start installing the STS twin turbo system we had to bring the compression back down on the engine. It was at 11.7 to 1 and we needed to get it down as far as possible. We ended up getting it down to just a little under 10 to 1 and we felt that this was a good spot to be. We also put a nice turbo cam in the motor while we were at it.
One of the first things that I would like to say is that I had never installed a turbo system before and I knew that I was going to need a lot of direction. I must have talked to the people over at STS a handful times per day just to make sure that I wasn’t doing anything wrong! The instruction booklet that STS sends with their system is very informative and very easy to follow which was a breath of fresh air when installing something of this nature.
I am not going to go over every step of the install because STS already has a fantastic instruction booklet and a superb support line for all questions. What I will do though is talk about how nicely the system went in and any complications that I ran into. All the pipes and actually everything else to be quite honest, were engineered to perfection in my opinion. I say this because there were no pieces that were put on that needed to be “worked” to get on. All the pipes went on with ease. The only pipes that I had a “fun” time with were the rocker panel pipes, but I just removed the rotors and the rocker pipe went in pretty easy with just a little wiggling.
I did all the wire routing in about a day and the piping was put in the next day along with the intercooler. Surprisingly the intercooler went in very easy as I have heard that a lot of other intercoolers are very tough to install. Once again this was a testament to the design. The third day was all the detail kind of stuff, tightening everything, hooking up all the wires, zip tying and so on. So that was about three days that it took to get the whole system in! Not bad at all considering that I am not an expert!!
Once it was all together we started the car up just to make sure that everything was running alright. We had the timing pulled way back seeing that we didn’t have a meth kit installed yet and wanted to stay safe even though we were only running 6-7 lbs of boost. We ran the car for a little bit, came in and tightened up all the clamps and then did this again. This is definitely needed as each time the clamps did need tightening. We then put everything else back on and that is where we are right now. We are going to be putting a boost controller and a meth kit on and from here we will give it a good tune.
With that said, this STS twin turbo system was a pleasure to put on as it was just like a good puzzle in that once you know where the pieces go, you just put them there and it goes right together! So if you are in the market for a turbo system or just want a TT system, the STS system should be first on your list for several reasons. They are already known to be easier to install than any other system out there, the heat factor or rather the lack of heat is a huge positive seeing that the turbos are in the rear of the car. Then probably one of the biggest reasons to go with an STS system is the customer service. As I stated, I called a half dozen times each day and I got a live person on the phone each time, thanks Chris!
We give STS twin turbo a HUGE smokin two thumbs up!!!!!
Stay tuned for the dyno results when the boost controller and the meth kit have been installed. At that time we will be able to address the so called “lag” problem!