For the curious, This is what 8100 RPM dyno graph looks like on the 370Z

John@Z1 · 11-12-2009, 12:58 PM

Here you can see how far the power falls off. But man, what an exhaust note.

This is not fully tuned. The car will not have the limit for daily use.

j.arnaldo · 11-12-2009, 01:37 PM

Please translate into layman's terms! Thanks!

ctzn · 11-12-2009, 01:46 PM

Thanks for posting John, be sure to update with a proper tune

John@Z1 · 11-12-2009, 02:10 PM

Will do.

rh_334 · 11-12-2009, 02:43 PM

NICE!

too bad its still slow

RCZ · 11-12-2009, 02:52 PM

Thats funny, thats not what my car does at 8150. Drops off, but nowhere near that much.

Also, of course its not fully tuned since you can't change timing. In fact, I bet that car did the EXACT same 290whp run 3 times in a row before you quit.

John@Z1 · 11-12-2009, 03:16 PM

Quote:

Originally Posted by RCZ

Thats funny, thats not what my car does at 8150. Drops off, but nowhere near that much.

Also, of course its not fully tuned since you can't change timing. In fact, I bet that car did the EXACT same 290whp run 3 times in a row before you quit.

LOL, actually 288 but yeah it's hard to extract the power from the 370z. The car doesn't have as many upgrades as yours.

RCZ · 11-12-2009, 03:58 PM

l'm well aware of the umm....issues shall we call them?

semtex · 11-12-2009, 07:19 PM

I'm kinda surprised at how the torque curve drops like that. I expect to see it flatter for the 370Z, like this:

Z1Performance · 11-12-2009, 08:14 PM

different dyno's can yield vastly different looking curves

semtex · 11-12-2009, 08:19 PM

Quote:

Originally Posted by Z1Performance

different dyno's can yield vastly different looking curves

This is true. So here's one of my DynoJet runs:

Still looks flatter. Anyhow, I'm not trying to suggest that something is wrong with the car that John dyno'd. I'm just surprised the tq isn't flatter is all. Different car, different results I guess.

RCZ · 11-12-2009, 09:52 PM

I guess dynos yield different curves because some dynos simulate load and some dont? Otherwise they should yield very similar curves..different numbers, but the curves should be somewhat similar?

ctzn · 11-13-2009, 02:27 AM

RCZ I think you're right, though climatic conditions and correction factors could play a role in the shape of the curve?

Togo · 11-13-2009, 10:24 AM

This graph is sort of disappointing. I thought the car would just keep pulling to the new higher red line.

I'm guessing that since this is a dynojet those numbers are reflecting a stock or near stock car? Would breathing mods yield better results? (meaning power keeps pulling to redline)

RCZ · 11-13-2009, 10:37 AM

interesting observation togo. I think there may be a chance you are right. I wouldnt be all that surprised if the stock engine is choking up when flowing that much air volume. Better flow up top probably means usable power. I dont know how modded the car in John's graph is, but I venture to say not too modded because of the amount of power its making on a dynojet. Intakes or exhaust maybe. The nice smooth AFR is also a sign that power came from fuel tuning, so it might even be a stockish car with a tune. Either way, point is that lack of flow mods may have been the culprit of that dip there at the end. From what I heard, our heads flow well enough to make power up to 8k....

Want to shed some light on the specs of the car John?

11-12-2009, 12:58 PM	#1 (permalink)
John@Z1 The370Z.com Sponsor Join Date: Nov 2008 Location: GA Posts: 1,589 Drives: Turbos Rep Power: 19	For the curious, This is what 8100 RPM dyno graph looks like on the 370Z Here you can see how far the power falls off. But man, what an exhaust note. This is not fully tuned. The car will not have the limit for daily use. __________________ Z1 Motorsports will beat any advertised price on Nissan OEM Parts! 770-838-7777 ext 311 AIM: JohnatZ1 email: John@Z1motorsports.com

11-12-2009, 02:10 PM	#4 (permalink)
John@Z1 The370Z.com Sponsor Join Date: Nov 2008 Location: GA Posts: 1,589 Drives: Turbos Rep Power: 19	Will do. __________________ Z1 Motorsports will beat any advertised price on Nissan OEM Parts! 770-838-7777 ext 311 AIM: JohnatZ1 email: John@Z1motorsports.com

11-12-2009, 07:19 PM	#9 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 53 Posts: 5,995 Drives: People to drink Rep Power: 32	I'm kinda surprised at how the torque curve drops like that. I expect to see it flatter for the 370Z, like this: __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

11-13-2009, 02:27 AM	#13 (permalink)
ctzn inquisitive Join Date: Nov 2008 Location: Back in Midwest, StL Posts: 384 Drives: G35 Rep Power: 16	RCZ I think you're right, though climatic conditions and correction factors could play a role in the shape of the curve? Last edited by ctzn; 11-13-2009 at 02:29 AM.

11-13-2009, 10:24 AM	#14 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 656	This graph is sort of disappointing. I thought the car would just keep pulling to the new higher red line. I'm guessing that since this is a dynojet those numbers are reflecting a stock or near stock car? Would breathing mods yield better results? (meaning power keeps pulling to redline) __________________ This will decimate all after you put about fifteen grand in it or more, and if we have to, overnight parts from Japan. Joe Clem and Koeppel Nissan

11-12-2009, 01:37 PM	#2 (permalink)
j.arnaldo Banned Join Date: Oct 2009 Location: Puerto Rico Posts: 937 Drives: Nissan 350Z, 2004 Rep Power: 0	Please translate into layman's terms! Thanks!

11-12-2009, 01:46 PM	#3 (permalink)
ctzn inquisitive Join Date: Nov 2008 Location: Back in Midwest, StL Posts: 384 Drives: G35 Rep Power: 16	Thanks for posting John, be sure to update with a proper tune

11-12-2009, 02:43 PM	#5 (permalink)
rh_334 Base Member Join Date: Nov 2009 Location: Alabama Posts: 36 Drives: 04 G35TT Rep Power: 15	NICE! too bad its still slow

11-12-2009, 02:52 PM	#6 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	Thats funny, thats not what my car does at 8150. Drops off, but nowhere near that much. Also, of course its not fully tuned since you can't change timing. In fact, I bet that car did the EXACT same 290whp run 3 times in a row before you quit.

11-12-2009, 03:58 PM	#8 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	l'm well aware of the umm....issues shall we call them?

11-12-2009, 08:14 PM	#10 (permalink)
Z1Performance Base Member Join Date: Aug 2009 Location: St. James, NY Posts: 237 Drives: 350Z Rep Power: 15	different dyno's can yield vastly different looking curves

11-12-2009, 09:52 PM	#12 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	I guess dynos yield different curves because some dynos simulate load and some dont? Otherwise they should yield very similar curves..different numbers, but the curves should be somewhat similar?

11-13-2009, 10:37 AM	#15 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	interesting observation togo. I think there may be a chance you are right. I wouldnt be all that surprised if the stock engine is choking up when flowing that much air volume. Better flow up top probably means usable power. I dont know how modded the car in John's graph is, but I venture to say not too modded because of the amount of power its making on a dynojet. Intakes or exhaust maybe. The nice smooth AFR is also a sign that power came from fuel tuning, so it might even be a stockish car with a tune. Either way, point is that lack of flow mods may have been the culprit of that dip there at the end. From what I heard, our heads flow well enough to make power up to 8k.... Want to shed some light on the specs of the car John?

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