I'm conflicted on which of these turbos to go with? I have done a lot of research about these two kits and they both have advantages and disadvantages. Positive for APS.....Cost $5400 No heat soak issue (mounted under engine), 500 cc injectors, comes with a pre tapped and larger capacity oil pan (Add $200 to Turbonetics kit to buy a spacer) and with the piggy back stuff it has to be a lot easier to convert back to stock. Disadvantages.....I think it has an attached waste gate vs TN's external waste gate, not as much bling in the engine compartment. The TN Cost $4700 + $200 oil pan spacer + $200 in header tape and other stuff to protect hoses around turbo, $100 to pay an A/C tech to install provided A/C hose $100 Total $5200.......External Waste gate, better bling factor. Disadvantages......Heat issue, boost creep with large exhausts, have to send computer back in to TN convert back to stock, 380cc injectors. Ok so overall I am leaning towards the APS since it really does cost about the same and it has better components from what I can gather. Does the APS kit have a fuel return system too? They seem to talk about it on their website. Also are the a lot of issues with the oil relay/valve or something, do all turbo kits have this? I know both of these kits are very good and I'm sure either would be an excellent choice. I guess my mind seems to change daily and I would just like to get some feedback from all of you experts and those who have had experience with these kits. P.S. NOT TRYING TO CAUSE A TN / APS WAR! THEY ARE BOTH GREAT KITS.

 

APS all the way installed both aps is much better.

 

aps....DO IT BACARDI AND COKE....DO IT....

 

APS, see my sig.

 

Aps +1!

 

APS hands down

 

This is an age old debate, but for what it's worth - I'd go APS over the TN ST kit. Both are good kits in their own right, but I've seen some NASTY results come out of the APS ST camp lately.

Just my Good luck.

 

Turbonetics single turbo!!!!



i just wanted to be the first one to say it

 

You'll get different opinions depending on who you've talked to. Everyone down here that's I've spoken with that worked with the APS kit has told me they didn't like it. But, as you can see, people have their own opinions of which is better.

I'd personally go with Turbonetics. If you want to see "fast" ST cars, look at the Turbonetics ST drag times. The APS kit or its owners haven't been able to prove its capabilities from what I've seen.

But its your choice. Get whatever.

 

turbonetics w/ a utec

but if you are gonna go APS go w/ the TT

 

There all crap.. j/k j/k..... lol

Quick, apply burn suit..

For my money.. the APS,BUT... just remember the most improtant thing is to have the right person install and tune..

 

Well, it does seem that out of the small number of APS ST owners I've seen, 80% of them have gone with the APS TT system eventually. I like the APS TT a lot, just dislike the internal gates.

Then again, 90% of the Turbonetics owners that have eventually built have gone with a Greddy TT. I'll be the first to agree it is excellent for a stock motor car but isn't made for the power a built setup can handle.

 

I have an APS ST and a UTEC that has accumulated over 20k miles on it and the motor has logged over 64k...It is still a daily driver...power and reliabilty have been great.

 

Thanks everyone for your opinions! Taurran you do make an excellent point and now I do wonder why there are not many fast times set by the APS ST on the Single Turbo record board on here? Are the 380cc injectors really enough to be safe for the TN kit? Why does APS use internal waste gates? I have heard really good things about the TN Flash, how is the piggy back system on the APS kit?

 

The 380cc injectors with warlboro pump on the turbonetics setup work fine up to around 400ish whp and 9-9.5psi. The reflash can be touch and go depending on the install and small quirks in the car. It's a requirement that you verify AFR's and run it on the dyno to make sure it's running within acceptible AFR's.

There just aren't many APS ST users around, and none of them are really in the habit of running their cars or posting times. I don't really know why.

The APS kit uses internal gates because those are the turbos APS specified. They released an "external wastegate kit" a while back, but I only heard complaints about it...

The Unichip EMS on the APS ST obviously has the advantage of being fully tunable and boost sensitive. It will work fine for stock block builds but isn't the most robust system.

One good thing about the Turbonetics kit is the tuner kit they sell. If you are worried about EMS, fuel system, and large injectors, you can have it for a bit more. Some vendors offer packages with all this (Performance Factory).

 

The APS ems (unichip) is heads and bounds better than the TN reflash. Curious where you heard good things about the reflash? A tunable EMS is going to always be a better option for the Z33 than a reflashed stock ecu. You are trusting an ECU designed for a N/A setup to run boost with the TN setup. The APS EMS is seeing boost and has the capability to control boost along with custom fuel and timing with a proper load based tune.

I could go on and on about why the APS setup is superior, but even with my comments above I am beating a dead horse.

 

Hey, I can definitely tell you that my APS STed Z was very fast even with the default unichip mapping. I even raced my buddy's turbonetics ST Z with the ecu mapping numerous times, and we were pretty close.. Actually I beat it by half length almost every time... I could drag all day with no problem, but he had to cool down several times because of the heat soak.. Game over~

As Taurran suggested, go with APS TT. You'll need it once you get bit by the HP bug...

 

I don't like the fact that the APS has internal wastegate. That's one of the reason I chose the TN over the APS, plus the deal I got was great. Also TN is easier to deal threw (customer service), plus spare parts are easy to get your hands on. The sale alot of parts for the TN kit at Summit Racing, which just happens to be 10 miles from my house. Also, I like the location of the turbo. But still have my eyes on a TT setup in far future, depending on how long this kit last.

 

Wow, suprised by some of the responses here. Seems as though the APS ST is the crowd favorite, but you'd never know it by the number of them out there (and on here).

 

Maybe the crowd favorite for those who have responded so far. I think everyone already knows my recommendation. Turbonetics all the way. Over 70k miles on the car and loving it.