Vit's FI TT 370Z Lives! - THE MoTeC M1 370Z
 

After months of waiting and a week long install... the Fast Intentions kit is on and the car is tuned on ECUTek by your's truly.

I have to say -- the wait was worth it. IMO this is by far the best value for your money, and the best put together kit on the market for this car. I opted for the upgraded HTA turbos with the Alpha covers and Tial housings. And let me say: spool is in no way affect. This TT kit outspools and downright just slaughters the single turbo 6262 370Z we did a few weeks ago. The TT setup makes more power *everywhere* even on "lower" boost levels, and comes in sooner and much faster.

If people aren't seeing the same... I think it's simply because the car is ramping too fast on the roller dynos and the pulls start at kind of a "high" rpm (ie, if you floor it at 2500, the car will start ramping and the spool is relative to that). On a Dynapack the motor is loaded and "settled" regardless of what RPM I start at, and I do like tuning the whole curve as well.

The TT kit makes positive pressure at 1500 rpm... 1.5psi. On steady state testing it was making 10psi @ 2500 rpm, 12psi @ 3000 rpm when I let off.

For reference, the car made 278whp stock on our dyno.

So what's she make? This is our 92 octane pump gas. Blue is HP, yellow is TQ, purple is boost.

Complimentary dyno video: https://www.youtube.com/watch?v=9-5pGvd1xmU

4.5psi wastegate pressure - 436whp & 400wtq
http://blog.vittuned.com/wp-content/....5psi_nowm.png

8psi - 525whp & 475wtq
http://blog.vittuned.com/wp-content/.../8psi_nowm.png

10psi - 554whp & just a hair shy of 500wtq
http://blog.vittuned.com/wp-content/...10psi_nowm.png


The 2.75" maf housings peg the MAFs at about 9psi on my car. On 10psi it's a bit on the conservative side due to the afr starting to lean out after 6500 (quite apparent on the graph -- she wants more fuel). With a bit more fuel I feel that 10psi would of made 565-570whp. I will be switching the car to SD when I do the E85 tune sometime in the future.

And here's a comparison of my car on 8psi vs a comparable boost level. Solid is my TT car, dashed is the single turbo 6262 car. Also tuned on ECUTek.
http://blog.vittuned.com/wp-content/...ingle_6262.png

I was alittle wow'd by how badly the single turbo setup got stomped. It's almost 200wtq more @ 3000 rpm!

The guys at FI were stellar -- I look forward to doing more of these kits.

Wow. Most impressive. That boost curve is insane.

Those are some king kong turbo's you got there. This will be a very fun car.

it might "slaughter" the single turbo setup, but this kit is probably 7-8000$ more after install. Huge price difference. Still great numbers tho.

Wow, now to get into the 700whp game with E 85

Is this a built motor? How much would a stock engine handle and for how long. Very interested but reliability is my biggest concern, daily driver...
Thanks for all comments.

There are several individuals running 600whp+ with E85.

Just out of curiosity, what single turbo setup for 370 runs a 6262 turbo?

Who in the world would put a 6262 turbo on a VHR motor? That is a 4 cylinder motor at best...You can see that at 6,750rpm the small turbine wheel and turbine housing become a choking point.

Now if you compare this graph below, to a your TT graph, and add the 10% difference in dyno readings DJ vs DP (that looks like a Dynapac hub dyno, correct me if I am wrong), you are basically on par when it comes to performance:

Journal bearing 6266 T4 1.0 a/r (BB will gain about 200rpm in spool as well):

http://rttuning.com/wp-content/uploa...son-G-Dyno.jpg


So if you are putting (comparing a properly set-up ST to TT), the two cars side-by side at the track or a roll race I think the phrase "slaughter" is a bit comical...no?

I am not trying to stir things up here by any stretch...I have a great deal of respect for Tony and the boys at F.I. They provide the community with a tremendously good products, which they stand behind and support. There is absolutely nothing negative I can ever say about that company, the products they offer, or the people behind it. I have had several conversations (phone) with Tony, and he is truly a stand up guy. I have directed many customers that way for TT kits, since some customers are under the impression that I have TT kits as well (confusion between TS and TT).

Oops, double post.

I've seen a 370z with a 6262 before, can't comment on how well it drives though https://www.youtube.com/watch?v=NvrGZf_0ebk



nice numbers vitviper !

there is one guy who made 768whp on a stock block. 16 psi on E 85.

6262 turbo was used by vortex/vsr motorsports once upon a time. with the fast intentions kit though.... its crazy how close the HP to TQ is.... like that is advantageous among other TT kits....

True but that was a couple weeks ago. I'm not saying it won't hold together but the FI guys running north of 600 have been that way for thousands of mines so it's proven. One guy has broken 700, so not so proven.

That makes sense why the TQ was so low.

That is the only con about a twin -- the install is very involved.

Yes there does appear to be a restriction, it's a low mount turbo kit design like yours (although not yours, I do not think, the kit's been on the car several years on UpRev before I retuned it).

You're one of "those" guys -- you should get out more, not everyone uses a 15 year old Church dynapack calibration (which is 10-15% high actually). But sure, I'll bite (and obviously you didn't read my OP where I posted stock numbers): My Pack reads comparable to a Dynojet. Baseline 370Z, bone stock, was 276-278, with bolt ons it made 318-320. So if my Dynapack is "10% high", that means a stock 370Z makes 245-250whp? Really?

Best baseline ("highest" baseline) vs the best bolt on tuned graph: http://blog.vittuned.com/wp-content/...m-1024x608.png

I can go on... the DE 3.5L motors dyno 230-240 with mods untuned (had a couple at the 220 range)... must be 10% high too, right?

People and their dynapack bias...

You couldn't compare that graph to my results even in a perfect world. For one they look like they love using the STD correction factor to get a nice numbers inflation. I'm assuming that graph is also in what, 5th gear? That certainly helps spool. I can slow the ramp rate on my dyno down and show you the twins making 12psi at 2600-2700 rpm, think a single can keep up to two baby turbos coupled right at the head??

I had the chance to compare two cars with two setups on the same dyno, take it for what it is. But to assume you can post a random dyno graph and compare it to my plots... um, Dyno 101, it just doesn't work like that -- I have a baseline for the car(s) on my dyno and then we track the changes from there.

At best you've shown me you need more boost to make 510whp (take away that 3% STD inflation -- try using SAE).


LOL

Riiight.
That we can agree on.