Nevermind its over your head. My point was, if the gain of 5 whp or 19 bhp shows a difference of 14, how does 24 whp have a 28 bhp, having a difference of only 4. Get it?

Yeap, I'm still trying to figure out what's up with the OP's post. 19bhp difference between the NISMO and the normal edition. The OP said people slapped on a NISMO exhaust onto the normal editions and only got 5whp. NISMO edition =/= normal + NISMO exhaust. NISMO edition probably has a tuned engine too to boost that bhp figure to 350.

The reason why I say that the NISMO editon =/= normal + NISMO exhaust is because 19bhp =/= 5whp. No way in f'ing hell.

It's not over my head, I'm saying that 5whp and 19bhp is bs. OMFG!!!!

5whp only nets you 6bhp.

:bowrofl::bowrofl::bowrofl::bowrofl: :bowrofl: :pics:

:facepalm:

Lol well when i find the thread about it, ill post back...

You don't even need to find the thread, how the hell can 5whp give you 19bhp? that's nearly 400% increase. Like someone mentioned earlier, if i had a 300whp car, and do 400%, i have a f'ing 1200bhp monster. Yeah that sound right to you? NO!

AGAIN listen, that 5whp is probably just exhaust, there are other things that probably give the NISMO an edge ok? Engine tune would probably be one, I'm not sure of the differences between NISMO and non NISMO, it's obviously more than a damn exhaust.

You obviously have horrible reading comprehension, so let me break it down for you.

19bhp or 15.77whp difference from NISMO vs non NISMO probably includes:
(again, I'm not sure of the differences between the NISMO vs non NISMO in terms of what gives it that extra 19bhp, if someone can chime in on that, it would solve a lot of problems)

engine tune
exhaust
other crap

the 5whp YOU got is just from non NISMO + exhaust, you're missing 10 whp, and that is probably from the other crap + engine tune. GET IT?

Does this work?

Assuming 332hp @the crank & 275hp baseline @the wheels.

332 bhp x Y (whp gain)/275 whp= X (bhp gain)

Example 1:
20 whp gain

332 bhp x 20whp/275 whp= 24.15 bhp gain
Total bhp @ crank: 356.15 bhp

Example 2:
5 whp gain

332 bhp x 5whp/275 whp= 6.04 bhp gain
Total bhp @crank: 338.04 bhp

Unless you find an example of a NISMO and a Sport run back to back on a given dyno, your numbers will mean nothing. From what I've been able to read, I've seen a larger difference in HP. The only post of a 5 hp spread I've seen back to back was between the standard and the automatic. Generally (since every dyno gives differnt numbers) I've seen non-nismos usually hit in the 275 range and nismo usually hit around the 290 range just going from memory. That would yield a 15 hp diff at the wheels and about an 18 hp diff at the crank assuming an 15% drivetrain loss.

Well, thanks for the a**hole remark up above lol. Other crap on the nismo?? False. You obviously are the wrong person to be chiming in lol. Its just a discussion, settle down there chief lol

You are looking at it wrong......even though he is wrong too. Your view is correct, a 400% increase, but when looking at percentages, a 400% increase is not reversed as a 400% loss, it is on roughly an 80% loss. Big difference in numbers. But still, his math does not add up.

THANK YOU!!!!!!! You got it!

I wasn't looking at 400% loss, I'm looking at it at 400% increase, going from 5whp to 19bhp is about 400%, 380 to be exact, and yes I know 400% increase =/= 400% loss. That's why I corrected the other person's equations in page 1.

Cooo!! :tup: I didn't see the post above by the guy that did the proper math. He is spot on.

This is a good point....

Yes this makes sense. Obviously what i read about the 5whp diffence from 19 bhp was incorrect, which is why i was curious in the first place...

Geez.

I know! I did mention in my first post that im sorry if my info is wrong... Boy oh boy lol

NISMO 370Z (2009– )


2010 Nissan 370Z NISMO
The NISMO version was introduced for the 2009 year model. The engine produces 350 bhp (260 kW) at 7,400 RPM and 276 lb·ft (374 N·m) at 5,200 RPM with revised ECU settings and exhaust setup. Transmission choice is limited to a 6-speed manual with Nissan's new "SynchroRev Match" function. Handling is improved via stiffened springs and stabilizer bars compared to the 370Z Coupe. Other equipment includes 19-inch RAYS forged aluminum-alloy wheels with Yokohama ADVAN Sport Y-rated tires (P245/40ZR19 front, P285/35ZR19 rear), 14.0-inch front and 13.8-inch rear vented rotors, NISMO Sport Brakes with 4-piston front and 2-piston rear aluminum calipers, and a fully integrated chin spoiler.

Taken from Nissan 370Z - Wikipedia, the free encyclopedia

So the thing that is causing the differences between a NISMO and a non NISMO + exhaust is the ECU tune, which was what I said earlier. That is why the guy with a non NISMO + exhaust was only getting 5whp, he is missing the ECU tune that the NISMO has.

And Pelican, sorry about earlier, I just got a little heated.

E=Mc2...:icon14: wait wait math is hard. Just get in, turn on, push the pedal on the right and go fast, done.

Looks like the :drama: is finished and we've come up with a working equation :tup:

Aaahh gotcha with ur above post... And no problem man. We all get heated up once in a while!

I am definitely not a math whiz, but i wonder if we are going with an assumption that the bhp to whp loss is constant. I do not know, just asking.

Aside from the dyno itself, isn't whp affected by the tires? The tires have to transmit the energy to the dyno, so if the tires have a super high coeficient of friction, then the dyno will read higher whp than from a tire that is less slippery. Some of the bhp is lost as heat as the tires flex and slip.

That's exacly why you have to have vehicle specific baseline readings. There are too many variables to do an dead-on accurate gains between two cars. The equation I posted are just approximations based on available data. We don't know for sure, for example, if the 350bhp is an accurate baseline @ the crank. Basically, we need at least three known values specific to the vehicle in question. For arguement sake, those values give you a rough idea.
....my brain hurts know.
Also, I think I just added to the stereotype about Asians being good at math.:p

I figure it is constant if the drivetrain is constant. The % lost between different cars/transmissions will be different.

EDIT: and as the above posters mentioned, tires too. Basically any mechanical piece that helps transfer the power from the engine down to the road WILL affect the final hp given on the wheels. You change any piece of that in between the engine and the road, and you will have different % loss.

Haha, I'm Asian too. Funny eh?

+1 for the Asian crew, but I'm south Asian. Got here late to the math party :roflpuke2:

i heard there was math in here. need another asian? :rofl2:

Come join the party! :rock:

:icon18:

I'm not Asian, but I'm pretty good with numbers.

You can be an honorary asian <3

Hahaha, that's even better now that I am in China haha.

:excited:

Maybe....but we're short on pillows. Could you spare some?

He is greedy when it comes to those damn pillows. :shakes head:

The claimed engine power is not always accurrate, can be much higher, sometimes lower. Most cars will lose 12-18% through the drivetrain, 15% on average.

They don't test every motor, the 332 is an average.