once again, impressive gains! so with a good tune you will be looking at 390 fly wheel hp!

Actually, I *might* already be making 400 hp at the flywheel. Don't forget that right before I did my first dyno, bullitt5897 dyno'd his bone stock 370Z on the exact same DD dyno, and he pulled 254whp. So assuming he has the stock 332hp at the flywheel (i.e., he didn't get a factory dud), getting 254whp on that dyno means we have a whopping 23.5% drivetrain loss on that particular dyno. In order to back-convert 254 to get 332, you have to multiply 254 by 1.307. So...if we apply that muliplier to the 306.4whp I got on that very same dyno yesterday, the math comes out to 400.46 hp at the flywheel!

But don't get too excited. As far as I'm concerned, these calculations make for some interesting conjecture, just some food for thought, nothing more. If someone were to ask me to estimate how much I'm making at the crank, I wouldn't actually feel comfortable telling them 400. I'd rather give a conservative estimate based on, say, 17% drivetrain loss. That'd work out to 369 hp at the flywheel.

Edit: I just realized that I'm being too conservative. If I'm only making 369 at the flywheel, then that means I've only gained 37 hp at the flywheel (from the stock 332). But there's just no way I've only gained 37 hp at the crank, not when I've already gained more than that at the wheels. That's when I remembered that the 17% rule of thumb is for DynoJet numbers, so I shouldn't be applying it to my Dyno Dynamics results. If I do the math against my DynoJet pull of 321.3 whp, it comes out to 387.1 hp at the flywheel. In all honesty, that's probably a lot more realistic, given my results at the wheels thus far.

that is just insane!

Thanks for that last bit of information. Any thoughts on the source for the oil cooler?

Yes, but I'm not sure I'm permitted to disclose where I'll be getting it from as it's not released yet. Let me check with the source. I'll edit/update this post later if I get the green light.

Edit: Stillen is about to release an oil cooler. It is a SETRAB unit.

By my ricer math and yours. the baseline for the other z was 254.2hp wich is a 23% loss from 332 on that dyno to the wheels. If i take 398x23% you get 306.46 Thats what i think your making at the engine/flywheel what ever its called. wich is VERY IMPRESSIVE!

Awesome numbers! I installed my Stillen intakes and Berk HFCs on Tuesday and I can't wait to get my exhaust. I still have to decide on which one I want but assuming the gains are fairly similar across most catbacks, I should be making about the same power as you.

There are considerations to exhausts, some prefer really loud ones, some want giant cans out the back, titanium tips, for example..

But I can guarantee you that top performance gains from the exhaust have to be worked for. It's not just a matter of throwing some pipes together and calling it a system if you're looking for true performance.

and thanks for installing the intakes Skorch! What do you think of the intake growl?

i just wanna give props to Stillen. When they initially came out with these massive gains, we called em out (YA RIGHT!!), but they really pulled thru and wow'ed us on the dynos. Cheers to a great product. U guys have my full attention (and wallet). cant wait for some nice group buys (cough cough) and more products. and congrats to those who have these intakes/exhausts/pulleys/flywheels etc

Thanks for a great product. Honestly I don't know what exactly I'm hearing, the intakes or the HFCs. The combo together sounds awesome though! I can't wait to put an exhaust on to complete the symphony.

stunning results.
is the car's native tune so flexible that it exploits airflow/backpressure advantages so fully? makes me wonder if a tune would be necessary at all.

either way, bolt ons have the z in m3 territory, power wise. wow!

My hopes are that a tune will provide pretty significant increases as well, making it a very necessary mod for me.

throttle response is usually made sharper and more linear with a chip-- usually worth it for me just for that. if a tune can more fully take advantage of intake and outflow, the z will be truly beastly.:tup:

i think u should beable to tune the vvl system to make bigger power in the low-end by turning off emmission controls

For any of you who may still have concerns about these intake filters obstructing air flowing to the radiator -- I was changing my oil tonight and right before I was about to bolt the undertray back on, I happened to look up as I was laying underneath the car, straight at the filters. I yelled for my wife to hand me my camera. As you can see from the pictures below, there's plenty of room behind the filters and air isn't being blocked from the radiator at all. Hopefully these pictures will put this concern to rest once and for all.

http://www.the370z.com/members/semte...h-radiator.jpg

http://www.the370z.com/members/semte...rneath-car.jpg

http://www.the370z.com/members/semte...rneath-car.jpg