370z GTM Stage 2 twin turbo Stock block
 

http://www.the370z.com/members/lafit...45436-370z.gif
http://www.the370z.com/members/lafit...437-370z-2.gif

My 370 tt on 11 psi tuned and installed at Z! motorsports.
Putting the heat down on the heart breaker dyno dynamics dyno.
Watch the video im the 4th car!
February 2WD Dyno Day - YouTube

sick number. man.... one day i will be up in these 400 and 500whp numbers...

If you can afford it do a turbo man. trust me you wont be dissapointed.
Those numbers are bout 555 to 560 whp on a dynojet dyno.

Nice 40th and nice numbers on the stock block :tup:

on a sidenote, what vacuum level are you seeing at idle? Thanks!

I'll take a look Tom when I'm in the car. I never really thought about that number.

Just comparing numbers to others who are boosted. Vacuum numbers can let you know how "tight" your motor is. Do you run 11psi. often or is it your high boost map? Let me know when you get around to it.

Ummmm it is my high boost setting on my greddy boost controller. I really rarely use it on a daily basis just because its really too much power for your every day car. low boost gets me from a to be just fine lol. low boost is at 8 psi. im gonna check out the vacuum today and ill give ya a ruff number from my boost gauge.

Great Numbers and a smooth Graph!!

Thanks vince! OG it look like on my boost controller its around -20 to -25. While cruising on the interstate with the cruise control on it rides about -5 to -1 vacuum. It doesnt take much throttle at all or not much effort by the engine to cruise at 90mph and below those turbos must be pumping good air even while cruising cuz my supercharged 350z rides much lower vacuum numbers and took way more effort to cruise at those speeds.

Awesome numbers! I need to get mine on the dyno. Is this on the GTM tune?

Naaaa this is z1 custom tune on uprev. Dont be saddened if your car doesnt touch these numbers on a turbo kit alone my car has alot done to it. I would say on a turbo kit alone on the dyno dynamics dyno on the gtm flash youll be running 490 to 500 rwhp which is about 20 to 30 under dynojet depending on boost level. Your car will still be sick man tt on a 370 aint no joke lol

Very nice! What else have you done? I can add things to my wish list haha.

I would like to get a custom tune at some point...what are your AFR's like under boost? I am liking your numbers!

nice numbers especially from the heartbreaker of all heartbreakers!

The second graph shows the afr it sits right under 11. My best advice for you is unorthodox pulley and a light clutch and flywheel. Those 2 mods woke my car up when it was NA so i know its working good boosted. DOWN PIPES if ya can in ur area, GREDDY TIC EXAUST!!

I'd like to know what else you've done too. Good numbers!

Edit; just saw the post above.. Elliot we should be able to hit that with a proper tune with the mods we have.

Light clutch and fly, 2.5 down pipes, unorthodox pulley, greddy turbo tic exaust, greddy profec boost controller, 11psi, pump gas, on 295\30r 19 wheels and tires. Listed the wheels and tires cuz it makes a huge difference in power. The stock wheels and tires probably wouldve made a little more since i have 2 coats of powder coat on the wheels.

Im looking to do some fuel upgrades and turn it up just a lil bit. I wonder if sam would have something he would recommend on that. I think this engine can hold a bit more with the right tune. Jon a z1 aint no joke when it comes to tuneing so I have faith if he says we can get more out of it i think we can.

Sick! I'm pushing 8-9 PSI with the MBC right now. Response feels great with it installed. This weekend I'll see how much power I'm putting down, but the guesstimate is a low 430-450 whp range.

Sounds like a plan. Don't forget about you Greddy bretheren as well. Hopefully my ride will be finished up soon. Wassup man?

LafitteZ:

Awesome build and dyno dude! I am sure that there will be folks that hunt for number like yours. I was thinking about doing something similar for hi and lo boost (7-8 PSI lo and 11-12 hi).

sick numbers man!

Nice job and nice numbers!

Nice! What does it run in the 1/4 mile?

I went on the track my first time in a manual with this car about 3 months ago and i had a couple boost leaks in the car that i didnt even know about till the day after when i did a boost leak test. I was on kuhmo exta 295/30r19 and i couldnt get it to hook at all in either boost level but my best time was a low boost run at 8 psi and i ran a 12.00 at 122 trap. thats after about 12 runs.

When you refer to boost leak test exactly how do you do this.

That's not bad for street tires. Throw some drag radials on there and watch the times drop.

I picked up some cheap Cobra R knock off wheels for my Challenger for $100 each and some M&H drag radials. I shaved 8/10 of a second off my best 1/4 mile time the first time I used them over the 295/35/20 Nitto Invos I run on the street.

Basically you block off one air filter pipe and you put a boost leak tester with a air gauge and valve on the other air filter and you pump the system up with a compressor like you would blow a tire up and you put pressure in it as if the turbos are running and you listem for leaks in the system because theres alot of plumbing in these kits. Its a must for anyone with a boosted car period. leakes in the system will cause your car to run funny most of the time causeing a richening effect because the air from the turbos or supercharger isnt getting tho the engine. I installed some widebands so i can tell know when i have a leak somewhere because of that richening affect and the time it takes to boost up. I still do manual checks regularly especially after running it really hard.

Yea I didnt really build this car for a drag strip queen I really did it for a daily driver and take it to a road course and run down those nice fansy vettes and high end cars. They **** a brick when I come flying by in the straights and the cant touch me in the curves. I have sways and coils too so the car handles just like it runs. Syncro rev is the **** with turbos!!!!! i down shift and when the throttle gets blipped those turbos are ready to come alive out of the curves.

Thanks Rep added:tiphat:

I'm putting a GTM Supercharger on in a week,I also have a A/F gauge and a boost gauge too.

Thanks for the quick lesson:tup:

Yeah, I built my Challenger to play around on the street and go to car shows, but it's too much power to turn loose anywhere but the track. Weighing 4300lbs it's not much of a road course car, but does the business at the drag strip with 600RWHP and 625RWTQ.

I wanna get the Z out to a road course. This thing handles like a go kart!



Any problems with your turbo setup at all?

So I guess you never sold your Z?

Na man my Gf talked me out of it. She knows what this car means to me and she couldn't watch me sell my pride and joy. I guess I finally found a good one lol.

Speedy I did have a couple small problems right in the beginning but nothing I couldn't correct myself. My other problem I have right now is the tranny shift grind crap. Were in talks with nismo and were going to try some new synchro designs. We're gonna try the Kevlar first which is the one they use on there race car. The z tranny is the Achilles heal in my opinion because if it wasn't for that the car would be perfect.

Did I have the grind before the install?

Gotcha. I've seen several posts about the autos blowing up with FI.

I don't think his is an auto ...........

Yea when my car was brand new and still NA i had that stupid grind going from second to 3rd so I had it warranteed and then i installed the turbo kit and i did a bunch of high speed runs and now it grinds from 4th to 5th and the tranny sounds like its gonna fall out the bottom. I lost like 5 miles per gallon, the tranny sounds loud as hell and changing gears is really tuff sometimes. i changed the oil in it twice. Nismo thinks i broke a shift fork and the synchros are toast. So im having another tranny I bought built back to stock then im pulling this one out and gonna fix it with the nismo synchros and custom shift forks.

Where are you getting this synchros and forks from? I am interested.

I talked to a friend of a friend who races 240s and 280zs. Hes in baton rouge louisiana. He talked to nismo for me because there are really no one attempting to or has attemped to fix this problem that we know of. The kevlar synchro would purely be a test to see if it would last in a daily driver because in theory the kevlar should wear faster then the brass but they use the kevlar in there endurance race cars with no problems so they will have to install it into mine let me drive it for 10000 miles then pull it back apart to see how it held up. From what he told me the kevlar makes the shifts so much smoother. I can probably get you his number tomorow if youd like.

That challenger hauls man. i gotta show that vid to a friend of mine. he works for southern hotrod which is mopar guys. hed like that vid.

Please keep us updated on this! You should start a thread or something, it is deff. something that will gather interest. Mine grinds from 1st to 2nd and its getting replaced under warranty but its just a matter of time before it happens again. I will be very interested on upgrading synchros depending on your results.