I bought my 07 silver z with 55k I paid 16,500 I thought it was a good deal any way this is my spring / summer car tht I'm in love with and in the process of building and I just thought I'd share ..here's a list of thing I already bought this winter ....

Stance Ss coilovers
Stoptech brake kit with drilled and slotted rotors & stainless steel lines
Godspeed version 2 front and rear camber kit
15 mm rear spacers rear & 10 mm fronts
20 × 10 & 19×9.5 Xxr 526 ' s Anodized Red Lip Brand new I may sell these not sure yet ...
Depo blacked out headlights
Red Sparco evo seats
Sparco rails
Red Sparco four point cam locks
Carbon creations HR oem look carbon fiber
R35 Gtr injectors
Greddy ti c exhaust
I have a whole spare Hr engine (Complete Block and head only 36k for low compression build (in the future)
And ftw a stage 1 gtm twin turbo kit I'm in the process of making payments on (same guy I got the motor from ) 5000 cash for Osiris, Turbo Kit , And a spare Hr transmission with 36k

All my supporting mods for my turbo kit I am currently in the market for .....oil cooler , meth kit, fuel return system, 340 lph fuel pump.....I'm trying to make close to 550 hp to the wheels on a stock engine via osiris ...I kno it's a little risky but wth....I gotta spare engine with 36k

Today I installed my core support new depo headlights and New carbon hood, sparco evo seats. it took me a little under 5 hours to complete everything properly no rushing at all ...I live in boston and today it was 20 ° out today ...but there I was at 1130 am putting in my wrench time (@public storage).. I refuse to pay shops for things I kno I can do perfectly fine on my own I'll throw you guys some pics

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New headliner coming soon

Seats were not bolted in this pic



Btw just to tie things up this is just a fast street car ...not a crazy roll caged out track car ...

 

O yeah I gotta jwt clutch n lightweight flywheel 2

 

Stage 1 GTM TT is only good for about maybe 450whp, def not 550whp. GTM actually rates it 500BHP which is more around 420whp. I've got the stage 2 and it's only good for about high 500s. You're not going to be able to hit those numbers with a Stage 1. Maybe you can sell or swap the turbos but that's going to be $$$$$$$$$

You don't need a fuel return system for that power, it's a waste of money. You need atleast 600CC injectors.

Also, 3 experienced shops have already told me the limit for stock HR is around 540whp. I'd consider risky around 530. I'd consider 550whp not smart.

The Greddy Ti exhaust is very nice but it's going to be hard to hit the power you are looking for with only a 2.5-2.75 exhaust. You need a full 3".

Also, do you know if the kit he has is an external or internal wastegate system? External wastegate kits are much easier to make the power. For 550whp you're going to need atleast a Stage 2 external wastegate kit setup.

Lastly, tires are going to be a big thing because at 500whp I can tell you right now it's pointless and slower than my Altima from 0-60 due to no traction and I'm running a decent 275 Yokohama Advan AD08 tire. Don't be thinking your gonna stance this thing out with 10" rims and 245 rice patty tires and it still be quick. If there's any advice I can give you with this setup it's TIRES. Thick, meaty, sticky tires.

 

great advice from Nismo, i would ditch the crap godspeed stuff and get spl or spc....

i am not a personal fan of 20' wheels they are big, heavy, and tires cost alot..

 

looking over the Godspeed I actually think it's a very good buy. Looks to be the exact same as SPL just a lot cheaper. Actually kind of pisses me off how much I paid for the SPL when Godspeed makes a rep kit just like it.



OP, I also like your brake kit and your Stance SS coils. I believe those are the 14k front 7k rear setups?
Overall, you have a solid build going here and a lot of good stuff. If you want to hit 450whp i think all your parts are really good. I would probably bump the injectors to 600cc though. I'd also def go with a oil cooler. Just get either the 25 row GTM kit or a kit from Z1Motorsports. The JWT clutch, I don't know it's limits but I'd research to make sure it will hold the power but you install.

 

i get what you are saying on the Godspeed stuff.... but just because it looks like it doesnt mean it is the same quality or be able to take the beating....but that is my opinion....

i would want to see one in my hand first to compare

 

You will be a lot safer not installing the 4 point harness in a street car.

 

"Godspeed V2".. lol. Looks like they put plenty of 'research' into their most recent version.

Seems like you really like red.. not my taste but it's not my Z. Good luck with your build.

 

I really appreciate everyone's insight on the build I believe your right about the turbo kit 550 is not happening ....but I kno I can get to 501 pushing the limits of the turbo say 12 psi .....mayb 10 psi...who knows ...tires are my next buy I'm thinking of going with mickey thompson street radials. ..turbo kit has external wastegate s

 

To late now lol

 

Safe lmao^^^

 

Not saying your wrong but these guys made 513 on a stock engine same turbo setup as I have and this not my first time seeing 500 hp out of a stage 1

 

Dam right its my z and I love red ....front and rear sways coming soon .........GODSPEED lol I kno it's cheap but idc thts my price range I'm working with for those certain parts

 

If you're going to take GTMs word for it then take their word for it.

I've got a stage 2 with 3" exhaust, 10psi, running 93 octane vs their 91 California octane along with a Custom Osiris Tune by one of the best tuners in America at TopSpeed Motorsports. I pulled 503whp after a hell of a tune, original Osiris flash only netted me 470whp. Good luck with getting 510whp out of what they are saying. It's a pipe dream, but it's just my opinion. I only have the experience from my setup as well as others setups I have seen. Maybe they pulled some serious timing and a high wideband but I wouldn't know how safe that tune is.

I think the only difference between the turbos are smaller exhaust housing which will create faster spool but not as much top end. If I were you I'd set a goal of 450whp with quicker spool and nice power throughout the rpm band. I think you'd really enjoy it.

 

I'm sure they studied the SPL parts website , and probably ever ordered study material from them.

 

^^^ Definitely ordered a couple sets and just reverse-engineered them the best they could.

 

you wont like em... they are not adjustable.... i had them, ditched em for the hotchkis

 

I'm not all godspeeded out lol if I can find some cheap used Hotchkiss or eibachs I'll pull the trigger on those thanks for the advise

 

i would say they are better than stock ones.... just not as good as they could be

 

To add to the 550hp not being good on a stock block, I would also consider getting a different clutch. JWT clutches are nice for NA or mild forced induction, but if you're gonna creep up on 500hp I'd get something that will hold up better.