Help on Greddy TT

[Infiniti25G]

Ok So for the past 2 weeks I have gone MOD buying CRAZY
I have purchased over 32 items.Ranging from a NeW Exhaust HKS sport.Megan Y pipe Kinetix HFC. Upgraded all my rotors to brembo Drilled. Went with some Stoptech brake Lines Injen Cai Kinetix V-Intake.MOMO Auto stick and many more.

Now Im down to one of my Last 3 Upgrades a Turbo.After the Turbo Im gonna do Wheels.Than Indash Navi....Last will be all new Body Kit,but back to the turbo

Ok So It has come down to Greddy TD05-18G Twin Turbo Kit(The guys at import partspro.com will be hooking me up with it)

Now here is my ? For of you that have done this. Should I bye the greddy Intercoolers?http://www.hptmotorsports.com/greddy_specr_front_mount_intercooler_for_2003_350z _and_g35.php

Or go with a diffrent One.Also if anyone knows a few extra parts to go with this kit that isn't included please let me know. I know the Walbro isnt I allready purchased it.

Thanks for your time to look at and answer or even FLAME

[CandlestickPark]

Tim (ttrank) should be able to answer your questions related to the Greddy TT. Just in case you haven't seen this thread, check it out, be ready to be amazed!

She has twins, greddy twins that is...

[ttrank]

Yes, not only does the Greddy IC fit very well but it also is very efficient. **as long as you have a front end that allows good airflow to it** BTW it is just one intercooler not two. The greddy is one large core with twin inlets and a single outlet (DE and rev-up) or dual in/out (HR). Also the HR kit comes with 20G turbos, not the 18G. The newer DE kit also offers 20G turbos and a few other good upgrades.

Viet changed from the JWT IC with his 850bb kit to the Greddy and made ~30hp. It's a good design and very efficient.

If you plan to run the stock or Nismo front ends and are not going for serious power I would look into the Speedforce Racing dual IC setup to better work with that front end.

Along with the Greddy kit you will need some other things.
1) Engine management - the emanage blue is crap. At least get a UTEC or better (HKS, Haltech).
2) Fuel return kit is a good idea. It's not required for ~8psi stock block tune but above that you need one.
3) Boost controller. Greddy Profec B spec II is a very good one at a decent price.
4) Test pipes, ditch those HF cats and get test pipes. The turbos act like mufflers anyway so there won't be much (if any) for rasp and test pipes will help it spool faster.
5) Real brakes. The stock calipers will not hold up to the power you will make boosted. You really need to invest in a BBK. I have seen too many cars crashed due to tons of power and not enough brakes.

There is more but I'm at work and have to run to a meeting.

[Bestswat]

Greddy intercooler is good up to 700whp. The intercooler is not designed like the JWT (dual IC design). So like ttrank said, go for the kurookie front.

[citymunky]

I just installed my Greddy Kit not that long ago, and there a few more things your return for a refund if you are going TT

1) HKS sport muffler. It is best if you get a True Dual exhaust at least with 2 1/2" diameter.
2) Megan Y-Pipe. Same as above
2) CAI. You can't use it with TT's

Maybe you should list the rest of your mods.

[TTG35forT]

Did Bestswat mean the KurumaZ bumper? That is one option, which I have, but there are a number of others that are designed for a single-center mount I/C.

The Greddy I/C is tube and fin design, but it is designed to go with the Greddy kit, so it should be a bit easier to install. Alternatively, GTM has a Bar and Plate design, and there are others. Here is a link that describes the difference between tube/fin and bar/plate intercoolers:

http://www.mrtrally.com.au/performance/howinter.htm

The Greddy TD05-18G TT kit will spool up noticably faster than the TD06-20G, i.e. less turbo lag. The Greddy TD05-18G TT kit is good for well over 600 whp, and probably up over 700 whp (assuming the supporting mods are there). The TD06-20G TT kit is probably good for up to around 900 whp. (These numbers are based on the compressor maps for the respective turbos).

For reference, on my last build I had the TD05-18G TT kit, and had 609 whp on 93 octane/17.5 psi on a Mustang dyno. Alberto on the My350Z forum has the same kit, and is somewhere around 665 whp on pump gas and around the same boost on a DynoJet dyno. This is about right as those dyno's are known to read about 10% different from one another. The TD05-18G TT kit is good up to about 22 - 25 psi on our motors. Of course, we would need race gas or meth injection to be able to use that much boost.

Here is a good link to a turbo calculator:

http://www.squirrelpf.com/turbocalc/index.php

Set your parameters. Use about 105 - 110 for intake tamp, and around 97% for volumetric efficiency. Set your target AFR to around 11, and your BSFC to 0.42. Next, set the number of turbos to 2, and pick out your turbos from the list.

EDIT: Note that the hp is crank hp in the calculator. Add about 60-70 hp for drive line losses. In other words, if you want 600 whp, use somewhere around 660-670 hp.

EDIT EDIT: I changed the setting for volumetric efficiency. I am guessing that they want the pre-turbo VE value.

[Bestswat]

Originally Posted by TTG35forT

Did Bestswat mean the KurumaZ bumper? That is one option, which I have, but there are a number of others that are designed for a single-center mount I/C.

Well it's called the kurookie bumper for the sedans. But yes its a replica of the kurumaZ bumper from the coupe made to fit the sedan. I wasn't sure if he had a sedan or coupe. I have a sedan lol

[MinnG]

Originally Posted by Bestswat

Well it's called the kurookie bumper for the sedans. But yes its a replica of the kurumaZ bumper from the coupe made to fit the sedan. I wasn't sure if he had a sedan or coupe. I have a sedan lol

Anyone have a source for that bumper (sedan)?