2010 370Z NISMO Twin Turbo build courtesy of GTM

FuszNissan

You are correct with your stats, but I think you will get to 500 easier with 3"

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LouFuszNissan
ZDAYZ 2012

stormcrow

No problem, Frank. Glad you could learn a bit and that I could help. I look forward to your thread with your final build and results!


No reason for 3" for 500whp on a DJ on the 3.7l motor. Actually, if you go with internal wastegates (which I did) you can have issue with boost creep/spikes on larger exhaust. I'm not sure if Frank went with external wastegates or not and would not have issue if so...but, he will still be fine with his goals on 2.5" exhaust. Maybe a little more wear on the compressors over time, but not much.

Now if you "massage" the downpipe(s) into 1" there may be issues.

toner123

Like you I did go with the internal wastegates. Like I said for the kit wise I stuck to your build for the most part. Simply because you had the same goals as me and the biggest reason to be honest this will be the first FI i did and you have struck me as a person that knows what is going on and how to do the job right. I am extremely excited to put this together and install it on my car. I have a buddy that is going to be helping me that is well qualified with this type of stuff and Sam told me that my kit is going to be shipping with the instructional DVD(thats why my kit hasn't shipped yet). It seems to me this 2.5 or 3 in exhaust is a ongoing battle like i said earlier to fuz and i think it mainly comes down to your goals. I am going to stay with the 2.5 and ride it out and see what happens. I have a strong feeling that it will turn out well and because of Sam's words which i quote "You will not be disappointed".
Frank

stormcrow

With the internal gates you will be better off with the 2.5" all the way around combo. I would say, though, to stay within the 450-475whp range. I turned up the boost on mine yesterday for the first time to the high boost of a whopping 8.6psi and 520whp and traction was an issue. Second gear hated me and I quickly reverted back to the lower boost. It was not so much the upper HP causing the issue, but the higher torque numbers down low. Too much for the street IMHO. I think I'm just getting old. *haha*

toner123

yea thats where i am going to stay i don't want anymore then 500rwhp. Like i said i am super excited and can't wait to get this all done. I took a week of leave that way i can just sit down and take my time to do this. My Buddy is going to come over and help me out on the weekend to get me started and provide direction if I have any questions and after work he is going to shoot over. As for getting old I don't think thats the problem with not being able to stick lol. I think others between this forum and my350z were having this issue also with all stock. I don't know maybe I made that up lol. The last concern I have is just my warranty. I understand that I pretty much tossed that out the window on the engine and drive train, just if my headlights don't work I don't want the dealership to be like Ohh yea they don't work because of the TT kit you installed so warranty wont cover it lol.
Frank

PS fuz since I seen you reply on this, off topic I am in the market for a altima coupe new(hint hint). I spent my money to play now she want to play also, can't blame her lol

toner123

hey storm or anyone else, i have a question do you think I need a electronic boost controller. If so i have to figure out where the heck to put it lol. Thanks
Frank

bullitt5897

Depends on your goals. If your just staying with what the base kit offers "no" you dont have to have it. However, It is an option that most and even my self would urge you to get. A boost controller must be met with constraint! Just because you have one doesnt mean you need to turn the boost up!

For instance Sam@GTM and I are building the 1st 1000+hp 370z right now. I for the love will NOT be running that high of a HP and Boost on the street unless I cross a Bugatti Veyron in which I will proceed to hand him his @SS!!! lol.

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