Why does 370z require premium gas?

ImportConvert · 10-28-2010, 10:08 AM

Quote:

Originally Posted by kenchan

at least premium isn't expensive as it was a couple of years ago when it took like $80 to fill up...

It's a whopping $0.20-0.30 a gallon more, for around 10whp or so (according to Ford, the mustang GT gets 412bhp on 91* and on 87* it gets 10bhp less, and 13#tq less). If you get 20mpg and drive 15K miles a year, that is about $200 a year for 10hp/13tq mod. A VERY! cost-effective mod in my book! You would have to put 25K miles or so on the vehicle to equal a cat-back in price, and this involves NO work and NO chance of voiding a warranty.

fairladyZ34 · 10-28-2010, 10:51 AM

i get 93 octance here in NJ, maybe thats why my Z pulled hard lol

ImportConvert · 10-28-2010, 10:54 AM

Quote:

Originally Posted by fairladyZ34

i get 93 octance here in NJ, maybe thats why my Z pulled hard lol

As long as you aren't getting KR, then the lower the octane the better.

Endgame · 10-28-2010, 11:11 AM

it is truly uncalled for.

kenchan · 10-28-2010, 11:32 AM

ImportConvert = magazine spec racer. imagination at work.

m4a1mustang · 10-28-2010, 12:57 PM

Well, he hasn't made any personal attacks so I guess he's operating within the rules. Sometimes I question his motives...

ImportConvert · 10-28-2010, 05:20 PM

Quote:

Originally Posted by m4a1mustang

Well, he hasn't made any personal attacks so I guess he's operating within the rules. Sometimes I question his motives...

No-need to attack anyone personally. Sometimes there needs to be a devil's advocate, though. However, personal attacks really are unwarrented.

NiZZZmo370 · 10-28-2010, 01:54 PM

I'm pretty sure it has to do with the engine and the compression ratio...If you have a Z, why not put the best in it...(Premium Gas, Synthetic Oil, etc).

ImportConvert · 10-28-2010, 05:21 PM

Quote:

Originally Posted by NiZZZmo370

I'm pretty sure it has to do with the engine and the compression ratio...If you have a Z, why not put the best in it...(Premium Gas, Synthetic Oil, etc).

I agree. People will buy a sports car/high-dollar car and then want to run in it what they run/ran in their beater.

You don't feed a supermodel hamburgers and hotdogs.

GZ3 · 10-28-2010, 09:46 PM

Quote:

Originally Posted by ImportConvert

I agree. People will buy a sports car/high-dollar car and then want to run in it what they run/ran in their beater.

You don't feed a supermodel hamburgers and hotdogs.

soy hamburgers and hotdogs? shes gonna throw them up anyways

PapoZalsa · 10-28-2010, 02:11 PM

I had an Acura Integra GSR 2001

that required Premium Gas.

NiZZZmo370 · 10-28-2010, 02:17 PM

I know my GTR also requires premium gas lol and same with my 370Z...I just listen to the rules, sucks now though because of my GTR's tune, I have to put higher octance fuel.

WarmAndSCSI · 10-28-2010, 02:22 PM

It's all about detonation resistance... when you have a high-specific-output powerplant like the VHR with high compression and timing pretty near MBT from the factory, you need the extra detonation resistance of 91+ octane fuel. With a factory tune, you'd probably be OK running mid-grade but the ECU would pull timing due to a minimal amount of knock. 85 octane would be a serious no-no unless you never rev above 3000 rpm at half throttle.

NiZZZmo370 · 10-28-2010, 02:29 PM

Quote:

Originally Posted by WarmAndSCSI

It's all about detonation resistance... when you have a high-specific-output powerplant like the VHR with high compression and timing pretty near MBT from the factory, you need the extra detonation resistance of 91+ octane fuel. With a factory tune, you'd probably be OK running mid-grade but the ECU would pull timing due to a minimal amount of knock. 85 octane would be a serious no-no unless you never rev above 3000 rpm at half throttle.

WarmAndSCSI · 10-28-2010, 02:30 PM

Interestingly enough, you'd get better mileage on 85 octane up until the point that the ECU started pulling timing due to knock.

10-28-2010, 10:51 AM	#2 (permalink)
fairladyZ34 A True Z Fanatic Join Date: Aug 2009 Location: Central NJ Posts: 1,577 Drives: 08 G37S Black M6 Rep Power: 19	i get 93 octance here in NJ, maybe thats why my Z pulled hard lol stevent85 likes this. __________________ From Z to G to BMW and back to a G! Nismo for life

10-28-2010, 12:57 PM	#6 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6963	Well, he hasn't made any personal attacks so I guess he's operating within the rules. Sometimes I question his motives... __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

10-28-2010, 01:54 PM	#8 (permalink)
NiZZZmo370 Base Member Join Date: Oct 2010 Location: Aliso Viejo, Ca Posts: 67 Drives: Nismo 370Z & R35 GTR Rep Power: 15	I'm pretty sure it has to do with the engine and the compression ratio...If you have a Z, why not put the best in it...(Premium Gas, Synthetic Oil, etc). __________________ Daily Driver: 2010 Magnetic Black Nismo 370Z #400 (Nismo carbon fiber shift knob, Parrot bluetooth system): Track Car: 2010 Nissan GT-R Premium Black Obsidian (546whp 568wtq)

10-28-2010, 02:11 PM	#11 (permalink)
PapoZalsa A True Z Fanatic Join Date: Nov 2009 Location: Not in Sunny Florida Posts: 6,358 Drives: 16 Nismo w/Tech Pack Rep Power: 4500	I had an Acura Integra GSR 2001 that required Premium Gas. __________________ 2009 370Z MB Base w/Sport Package 6MT Modshack's Custom Air Intakes /3M Clear Bra/ Illuminated Kick Plates / F. I CBE w/12" resonators / EVO-R Front Lip / Rear Hatch Wing / Tein S-Tech Springs /Ilegal Tint in the Rep. of VA/4x20mm Z1 Spacers/ Vinyl Roof/Liquid Carbon Designs

10-28-2010, 02:17 PM	#12 (permalink)
NiZZZmo370 Base Member Join Date: Oct 2010 Location: Aliso Viejo, Ca Posts: 67 Drives: Nismo 370Z & R35 GTR Rep Power: 15	I know my GTR also requires premium gas lol and same with my 370Z...I just listen to the rules, sucks now though because of my GTR's tune, I have to put higher octance fuel. __________________ Daily Driver: 2010 Magnetic Black Nismo 370Z #400 (Nismo carbon fiber shift knob, Parrot bluetooth system): Track Car: 2010 Nissan GT-R Premium Black Obsidian (546whp 568wtq)

10-28-2010, 11:11 AM	#4 (permalink)
Endgame A True Z Fanatic Join Date: Nov 2008 Location: Phoenix Posts: 1,613 Drives: Nothing Now! Rep Power: 224	it is truly uncalled for.

10-28-2010, 11:32 AM	#5 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	ImportConvert = magazine spec racer. imagination at work.

10-28-2010, 02:22 PM	#13 (permalink)
WarmAndSCSI A True Z Fanatic Join Date: May 2010 Location: SLC, UT Posts: 1,671 Drives: '08 Evo X \| '10 370Z Rep Power: 19	It's all about detonation resistance... when you have a high-specific-output powerplant like the VHR with high compression and timing pretty near MBT from the factory, you need the extra detonation resistance of 91+ octane fuel. With a factory tune, you'd probably be OK running mid-grade but the ECU would pull timing due to a minimal amount of knock. 85 octane would be a serious no-no unless you never rev above 3000 rpm at half throttle. __________________ '10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake '08 Evo X - built motor+trans \| BB-X @ 32 psi \| CH3OH \| self-built+tuned - ??? WHP '01 Galant V6 - built motor \| GT35R \| self-built+tuned - 550+ WHP (retired)

10-28-2010, 02:30 PM	#15 (permalink)
WarmAndSCSI A True Z Fanatic Join Date: May 2010 Location: SLC, UT Posts: 1,671 Drives: '08 Evo X \| '10 370Z Rep Power: 19	Interestingly enough, you'd get better mileage on 85 octane up until the point that the ECU started pulling timing due to knock. __________________ '10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake '08 Evo X - built motor+trans \| BB-X @ 32 psi \| CH3OH \| self-built+tuned - ??? WHP '01 Galant V6 - built motor \| GT35R \| self-built+tuned - 550+ WHP (retired)

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