My 2004 5AT G35 coupe was built a while back with 24k on the original motor at Forged Performance with a basic built short block with JWT S2 cams and a 700bb JWT kit and a built 5AT from GTM. I've been enjoying the car for a few years now at the ~500 whp level. It was sorely in need of some maintenance that I had no desire to dig into myself (e.g. changing out the oil return hoses on those turbos located way up high in the engine bay). I also wanted to see if Hal could convince Haltech AUS to get the new Plugin Pro Haltech unit working on my 5AT so I thought I'd give Dynosty a shot at looking after the car this past winter and dropped the car off on Feb 1st. To keep a long story short, the new GTX turbos had just come out and I asked Hal to see if he could adapt it for use on my JWT kit while the motor was down. The compressor map looked like an impressive improvement over their standard counterparts (comparing 700bb turbo to GTX2867, with the line mapping airflow to reach 600 whp):



Well I ended up getting the turbos to "try" and one thing led to another and I ended up with a few upgrades:

GTX2867 turbos with Tial v-band 0.86 A/R cast stainless turbine housings.


SFR 321 stainless headers with burns collectors.


Some Dynosty fabrication at work.






Here was a base line dyno when the car arrived (18-19 psi on 93/meth; tough day on Hal's dyno for my car):



Here was the best run after tuning with the new kit (18-19 psi on 93):



With the free flowing exhaust the 1 bar springs ended up producing a pretty high WG power level. Unfortunately the 5AT cannot hold this power consistently on Hal's dyno - and power fluctuates between 530-580 whp depending on transmission slip at high rpms. So this is where we decided to leave it for now (no boost control). I will be needing to consider other transmission options to turn the boost up, and these turbos are efficient through 30 psi :icon9:. 6MT vs something else? We shall see... For now, the car is a blast to drive and I'm back to enjoying it for awhile.

Many thanks to Hal, Dustin, and the crew at Dynosty for a job well done. How would I rate the experience? They get an A for customer service, A for integrity, A for knowledge/expertise, A for workmanship/quality. Only nick in the armor is that I'd give them a B for meeting time expectations as I ended up missing ZdayZ, though I was warned that that might happen. It was a complex build (details like fuel voltage regulation, oil return, etc I haven't mentioned among other nice touches) but still I was given hope it would be done in time. They did work hard to try to meet that deadline but they would not release the car half done or untested, and well, the result is what it is. Bottom line, they have earned my trust and my future business.

The car has been tuned to perfection. It starts and drives perfectly - no hiccups, no hesitation - just smooth power to redline. I cannot feel any transmission issues while on the road. It pulls much better up top than it used to, spools just about as quickly, and has so much room to grow. Happy to answer any questions. Later guys - happy boosting...



PS. I'll be having a few parts for sale in marketplace for anyone looking to piece together a 700bb turbo kit for very cheap

 

looks amazing! Any details on your auto tranny you had built?

 

GTM built 5AT, TransGo valve body, Edge Racing torque converter. So far so good after 30k miles.

 

Clutch packs as well i'm guessing?

 

congrats on the upgrades Raj!

 

How much abuse has the tranny been through? (track days, launches with DR's...etc?)

 

Yes the clutch packs are upgraded with the GTM build. I've taken the car to the airstrip event and ZdayZ since 2008, missing only this year. No real track use. I do daily drive 9 months out of the year and boost my way through the back country roads almost contiuously!

 

Nice Raj

 

Nice too see your car is staying together and providing reliable boosted performance for a few years now.

So many have moved on to other cars or swapped to LS-(X) power.

 

Very nice build! What will be available in the market place for parts? Also did you have to use SFRs oil pump thing to pump to the turbos?

 

Also do you have a pic of the engine bay ive been thinking of doing a very similar setup but havent figured where to run the charge and intake pipe yet.

 

I will post up some more pics of the engine bay and cold side piping and oil return. Dynosty came up with their own solution, which is very elegant.

I will soon have JWT 700bb turbos, manifolds, heat shields, intercooler, hot side piping with 3.5" downpipes and JWT cast stubby downpipes to mate with stock cats, and some, but not all cold side piping available in the marketplace.

 

Ok, here's some more pics....

Cold side piping




Oil pump on frame rail (the little white thing, no big exa-pump!):


Turbo oil resoivoir (Sasha, look familiar? ):


Engine bay



Bumper (Jeff, I had to raise my Tein Monoflex to max in front to get reasonable clearance for my driveway and lift):

 

Well damn thats basically the whole kit your gonna have up for sale. Also thanks for the pics it gives me some ideas, where is your driver side pipes running i didnt see those?

 

I don't have good pics of the driver's side pipe but I can see if I can get some. It runs pretty straight back then up into the compressor outlet.

The kit will be great for anyone that doesn't mind buying all the bolts and nuts from the hardware store (the JWT online manual details all the sizes needed), and can get the cold side piping, including the charge pipe made up themselves. I have all the important cold side pieces (the cast-t from JWT for the IC outlets, and the bolt up pipes coming off the compressor outlets). You will also have to buy a JWT spacer and do your own oil feed and oil return lines. A 0.05" oil restrictor is also needed (I had installed a turbo oil filter from Forced Performance a while back and have ended up misplacing the JWT restrictor). Or you can just put 0.03" restrictors at each of the turbo oil feed inlets (available online). Uploading a bunch of pics to photobucket so I can post to marketplace...