I'm sure this topic has been beaten to death and each person has a kit they like for various reason... but I've narrowed my searches to a

Greddy TT and Turbonetics ST...

the Turbonetics one definaetly seems like a much more complete kit! The Greddy doesn't even include a BOV for a higher price...

can people with these kits comment on their installs / reliability?

I'm not looking to make 400+whp ... don't think the boost will even be turned up higher than 10 psi because I wouldn't want to blow anything up lol

thanks!

-ilon

 

If your power goals are less than 400whp then save the money and go with the Turbonetics kit. You will also save money on the install/tunning. The price of the kit inlcludes your ECU flash. Sharif (www.forgedinternals.com) has one in stock for $4720 shipped. A lot of people on here have been waiting several weeks for their kits, so besides the great price you will have it in less than a week. Good Luck!

 

I'd get the Greddy kit with the intercooler, but only if you buy all the extras like CAS wire, APS oil pan or oil spacer, BOV, fuel pump, timing harness, and a REALLY good tune. You can tune it to have as low of boost you feel comfortable with, but knowing how addictive power is, you'll want to up the boost within a month of having it, trust me! With the Greddy you can get all the power you'll ever need.

But, on the other hand, if you're certain that all you'll ever want is less that 400whp, than I'd save some cash and get the Turbonetics, they seem to be hitting in the neighborhood of 360-380.

I probably didn't help you out much, did I?

 

turbonetics is supposed to be offering bigger injectors and a different flash to get more than 380whp. I don't know when it will be available. PM MIAPLAYA and he can give you more info.

If you go greddy please do your research and make sure you get all the necessary extras. The most important thing is to make sure you find a good installer/tuner. I don't want to see another greddy mishap. If you go with greddy tt sharif can help you with that also and he will make sure you get the needed parts to run safe.

 

I wouldn't even consider the TT kits if all you want is 400rwhp or less. (but, for the record, 9psi on any turbo kit would be ~430+rwhp(which is pushing it), so you may want to edit that )

I would go with Turbonetics. If you feel that you need more power one day it certainly can provide. If someday, you feel like going over 550rwhp then you can also call Turbonetics and get them to get you a custom turbo that can flow more air. It should be a relatively easy process.

 

Thanks for all the info guys... I'm defineatly feeling a lot more attraction towards the Turbonetics kit! From what I hear, a single turbo set up is 9.9 times out of 10 always better than a twin turbo set up anyway... right? The turbos in the Greddy kit, are they ball bearing turbos? I wasn't able to find that info in the FAQ nor their website...

nis350ztt, what's a safe PSI for stock internals? I'm guessing 9psi is clearly a bit high since I'll be producing 430 rwhp (which I wouldn't really complaina bout lol)

My next, somewhat stupid question, is about exhausts... I really don't want to lose the sound of the stock 350z. Is that at all possible? in the FAQ section, nis350ztt noted that.. "Must use either a y pipe back exhaust (Apexi, Tanabe, Fujitsobo, etc) or a modified dual" can you explain that a bit more for me plz?

Thank You again!

 

The turbos in the GReddy kit are not ball bearing.

9psi or lower. The Turbonetics kit is making about the same power at 8.5psi that GReddy and APS make at 8psi (~380-400rwhp).

For the ST kits, you can use a Y-pipe-back exhaust. You could use a dual exhaust as well, however, you would have to get them to cut it shorter and use a "reverse y-pipe."

 

Sounds like you want a reliable sub 400whp car. In which case, I would agree in getting the Turbonetics single, and saving the rest on install and gauges and the like.

I was pleasantly surprised with the Turbonetics dyno charts I have reviewed. They are putting out about 8.5psi of boost, and very steady 11.0:1 safe A/F ratios and around 360-380whp The turbonetics kit can be installed in 10-13 hours and is FAR easier than any twin turbo install.

Still have one in stock if you need it...$4720 shipped.

As mentioned the Greddy twin is best for someone that wants 400whp or more, and is putting this on a built motor. Or, for someone that likes to "tinker" and tune their own car. It is an awesome kit, in the hands of an experience tuner/tinkerer. I will not sell the Greddy kit without the "Extras" becuase the kit is just plain unsafe out of the box. At a minimum, a Walbro 255 and timing harness.

The APS TT is a super safe twin kit, out of the box. This kit is by far the most complete twin on the market. It's only drawbacks, are that the Unichip can only be tuned by an authorized APS dealer...so make sure you have one near by. The out-of the box APS tune is probably fine, but its not uncommon to want some custom tweaking, for the particular octane fuel you are using. We have an APS twin in stock as well.

We are really in an exciting time for the VQ. There are several excellent forced induction options, and people are making improvements and discoveries almost every week! With over 50 built motors coming to life, it's only going to get better from here!

Call if you need any help.

 

The Greddy turbos are not ball bearing. As for the turbonetics kit... 9.5 PSI is the highest recommended boost by Turbonetics with the 380cc injectors that are included. Research is being done into a set of 550 cc and a reflash for it to compensate for higher boost.
Regardless of what F/I kit you get your exhaust note is going to change. Turbos act as a 33% muffler. You can run the stock exhaust if you like though. This kit works just fine with it.

 

thanks Sharif and nis350ztt! I will definaetly be getting the Turbonetics ST. How much would it be to ship to Canada (Ottawa, Ontario postal code: k2j 4z3) - - - I wouldn't be getting it this moment, but definaetly VERY soon (within a few weeks)

I still haven't had one questoin answered, how can I go about the exhaust issue without changing the sound of the stock Z - upgraded to a Nismo exhaust? Can you price out an appropriate exhaust for me too? I'd be intersted in replace the cats too...

thanks for all the help guys.

just to summarize...

Greddy TT = headache due to incompleteness of the kit, constant visits to an experienced tunner (in my case there's only one in the proximity of 200 km - Tapp Auto) highly recommend to a point that it's almost mandatory it is installed onto a built engine

Turbonetics ST = good to go out of the box and reliable without any upgrades (upto 400 whp at least lol)

 

I've priced out shipping on a comparably sized package to Canada...and its not cheap..roughly $250-$350 depending on the dimensons of the box. I charge actually shipping cost...no markup at all.

The cat option is $300 extra, and ready to ship.

 

so i'm looking at about an extra $600 for the cats and the shipping? this is Canada East btw, just north of NY

MIAPLAYA, would you be able to post a sound / video clip of your car? Are running aftermarket exhausts?

 

I have clips of my car on this thread...

https://my350z.com/forum/forced-induction/123231-new-turbonetics-pics-and-two-vids.html Yes I am running the Apexi WS2 exhaust.

 

That is correct. Just reminder that I always charge the actual shipping cost, so it might be a bit less (hopefully) or a bit more.

 

Sharif
Sorry to hijack the thread. If I got the version without cats and then changed my mind to have the cats version, how i'm going about to do this? Thanks Sharif.

 

I believe you can order the cat downipe seperately from Turbonetics and just replace the downpipe on your turbo....the part number for the cat downpipe is 21201

 

Thanks MIA. Just couple more questions As people stated it takes 8 to 10 hours to install the kit, guestimate how much does it cost? Also the cost of gauges? Just to get an idea of how much money I need to get this done. Thanks again guys!

 

Ive' seen quotes on install ranging from $850-$1000 without gauges. Here in Socal instal is $1100 with three gauges. As for cost of gauges it really all depends on what ones you get and what brand. My Autometer full sweep electric boost was almost $200 etc etc. Of course Defi gauges would be more.

 

Shoot me an email or PM, and I can price out a set of guages for you. I would recommend wideband A/F, boost, and EGT.

 

Does any have a dynojet graph on the T-nics ST that can be posted? I just can't find one. Thanks!