When I purchased my Z and first joined this site back in 2007 I came up with my name 350Z400rwhp because 400 to the wheels was what I wanted to achieve one day with my car. I had not a clue how I was going to get there so I just started doing research. I started off wanting a Vortech and then decided I wanted a Turbonetics and then came back to the Vortech because of the easy installation and also the fact the I got a great deal on a used one. Last May I installed everything with the 3.12 pulley and had it tuned at Forged Performance and put down 330 to the wheels. Even though Sharif gave it a great tune I later found a major boost leak (a bolt I didn't install on the intercooler end tank) and had always wondered how much power I lost and how it may of thrown off my tune. I drove the car for about 5000 miles over the past year and had a lot of fun with my new found power. After awhile I got used to this and of course I started to want more. I knew I would eventually go for the 400 that I had always wanted so over this past winter I made some changes. I first installed an XO2 dual exhaust as I still had the stock one. I thought just having resonated test pipes would allow things to flow well enough but I found that the stock exhaust was holding me back and would be a bigger problem when I upped the boost. My next change was the 2.87 pulley. I knew this would at least bring me close to the level of power I wanted if not more. I was also wondering if this higher boost level would allow my meth injection to add some power as I didn't have any gains from it with my 3.12 pulley. I set an appointment at GRD yesterday for tuning and decided to make the 6 hour trip there and back all in one day. I picked my friend up at about 5:30 am and the adventure had begun. We arrived at GRD around noon and I was very impressed with their shop and Tuan's knowledge of tuning 350Z's. As things started to move forward with the tuning I had hopes for hitting 370-380 on pump gas and 400 with meth.
After a bit I asked where we were on 93 octane and he said 398! I then got really excited to see what the meth could do. It hit a best of 418 but ended up making 414whp when all was said and done. All of this was with afr's of 11.5 on gas and 12.2 with the meth so I felt good that it wasn't on the ragged edge of detonation. We finally left GRD around 5pm and started the drive back home. I didn't really have a chance to open it up because of traffic and rain but there were a few dry areas that I got a chance to lay into it a bit. When I did it felt very strong and pulls VERY hard on the top end even though I didn't take it past about 6000 for fear that I was going to lose it and I was super tired. The sounds that my car make now are amazing. Not sure what to compare it to but it sounds exotic once it passes 4500 rpm. I can't wait to run my car at the track and get some numbers and for things to dry out a bit as it still raining Overall I couldn't be happier with the results. I would like to thank Tuan and GRD for the great tune. They treated me very well and were very fair on the cost of my tune. I would recommend then to anyone in the mid west area and consider them one of the best out there when it comes to working with 350Z's.Also, thanks to everyone on this site. The information on here and the advice from many has helped me finally achieve and surpass my 400rwhp goal!

Here are a couple of videos of my dyno pulls.

***Here are some digital graphs

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/rIXR3PHYj8E&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/rIXR3PHYj8E&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/G_KKbkh88m4&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/G_KKbkh88m4&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>

 

now the real fun has started. congrats! i knew that kit had a lot more in her.

what does the boost peak at now? did you notice less rattle at idle?

 

Sweet! Time to change your sig!!

Edit: Where did you find a leak? that two bolts holding a bracket?

chefj

 

14 psi and I had the idle raised to 850 rpm so no more rattle

 

I just did

 

btw, check this video out. 414 is probably more like 44X ish on a dynojet.

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/UZXbk3o-xHg&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/UZXbk3o-xHg&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>

time to go mess with some C6's now.

 

GRD, I've never seen any pictures of their new shop. Looks like they have a lot more room.

OP, Is Irshad still there ?

 

I believe he is if I am recalling his name correctly. He was a pretty cool guy and took us for a tour of their shop which is huge and had about 20 cars in it. They had some sweet Z's, WRX's, Audi's, and a sweet single turbo Supra.

 

Haha Irshad lol I called him Twany once and the guys over at ChicagoZ NEVER let me live that one down.

Irfan, he's still there. In fact I spoke with him a couple weeks ago about some FI and tuning options for my G.

They installed my HFCs too. Everytime I talk to them I end up spending $$$$. I know its only a matter of time between my now and my soon to be fate just like the O. P here. Congrats bro! Enjoy the ride for sure. GRD FTW!!!!

 

Wow! Thanks man. I really need to get to the track soon and verify these numbers then. Wonder if I can break a 120 trap? hmmmm

 

Congrats man, great numbers. Great bunch of guys at GRD.

 

Paul, Irshad is still there and also his cousin/nephew Irfan.

 

It was probably Irfan who gave you the tour, he's in his early 20s.

 

Good to hear.

Hopefully not too OT, but how's your car running Brian? I'm getting my 3.3 VLSD tomorrow, maybe I will quit scaring the passengers when I shift into 3rd, lol.

 

Great to see another vortech in the 400s... be safe with that new found pw.

Not sure about dynopak always giving out lower #s compared to dynojet but in CA the dynopak are making +20-30 more whp compared to the regular SAE dynojet.

 

WOW 14psi. How did you manage that? It just seems very high for your setup. Anyways congrats on your new tune and power.

 

Thanks! Yeah I was figuring about 12 psi but its hitting 14, I put the boost graph up there too.

 

Check the graph again, it's hitting 11psi. The pressure is read on the left side, the right sided, where it reads 14 is the A/F ratio side. A/fs are great, by the way, but the boost is maxing at about 11 psi; as it should for that pulley.

Great numbers, by the way.

 

Are you running 50/50? or full meth?

Damm...I gotta stop look at this thread bro....it makes me wanna go 2.87...

chefj

 

I'm running Boost Juice from Snow Performance, its a 51 /49 mix.