TT Tune on lower octane?

bimbimbop · 08-11-2017, 12:57 AM

Hi all, I need help from those Turbo gurus out there. I am about to get my TT tuned out here in Korea and have some questions. The tuner out here is saying that he wants to tune my car at a 95 RON (equal to about 91 Octane) instead of the 98 RON (Equal to 93 Octane). His reasoning is because he says that alot of gas stations will say 98 RON but it will really be 95 RON. Now if he tunes it at 95 RON how bad will it be if I do get a real 98 RON in the tank? Should I be worried about tuning it at a lower RON?

Senna-F1 · 08-11-2017, 01:40 AM

If what he says about stations mislabeling the fuel is true, he's doing the right thing. If he tunes for 95, and you get real 98, your engine will just be MORE safe, not less. If on the other hand he tunes for 98, and you up with with 95 in the tank, that's dangerous.

Elmo370z · 08-11-2017, 03:19 AM

Dope, I was looking for tuner when I was out in Seoul.

jchammond · 08-11-2017, 03:21 AM

What's your availability of injecting methanol to assist w/lower octane fuels.
As I've heard guys in the states doing it w/93 pump gas & making good power.
This could be an option for you.

Infidel · 08-11-2017, 08:55 AM

Quote:

Originally Posted by bimbimbop

Hi all, I need help from those Turbo gurus out there. I am about to get my TT tuned out here in Korea and have some questions. The tuner out here is saying that he wants to tune my car at a 95 RON (equal to about 91 Octane) instead of the 98 RON (Equal to 93 Octane). His reasoning is because he says that alot of gas stations will say 98 RON but it will really be 95 RON. Now if he tunes it at 95 RON how bad will it be if I do get a real 98 RON in the tank? Should I be worried about tuning it at a lower RON?

Might be a good idea to take a couple of weeks of vacation far south of your location, use the need for a tune as an excuse. Stay safe.

SouthArk370Z · 08-11-2017, 09:06 AM

Quote:

Originally Posted by bimbimbop

... Now if he tunes it at 95 RON how bad will it be if I do get a real 98 RON in the tank? Should I be worried about tuning it at a lower RON?

Tuning for lower octane will produce less power but your engine will love you if you are buying mislabeled gas.

As per Senna-F1, running higher octane fuel than what the car is tuned for will have no effect. You waste a little money buying unneeded octane but the engine won't notice. No worries.

bimbimbop · 08-13-2017, 04:19 AM

Great thanks for the info guys...I was sure that running richer gas wouldn't hurt but just wanted to make sure and get your alls input

Quicksilvers · 08-15-2017, 07:13 AM

Quote:

Originally Posted by bimbimbop

Hi all, I need help from those Turbo gurus out there. I am about to get my TT tuned out here in Korea and have some questions. The tuner out here is saying that he wants to tune my car at a 95 RON (equal to about 91 Octane) instead of the 98 RON (Equal to 93 Octane). His reasoning is because he says that alot of gas stations will say 98 RON but it will really be 95 RON. Now if he tunes it at 95 RON how bad will it be if I do get a real 98 RON in the tank? Should I be worried about tuning it at a lower RON?

If you are getting your 370z tuned by this tuner I would definitely do as your tuner requests because he is probably correct. Just make sure to use a high quality top tier gasoline. I do know with your TT set up detonation can and will damage your engine. I would use 95 RON/ 91 octane.

2011 Nismo#91 · 08-15-2017, 08:34 AM

The track I go to has their own gas pumps but the price is pretty high so many people have gone into the small town gas station to get their "93". And a few of those people had blown their motors only to find bad gas in their tank.

TBatt · 08-15-2017, 09:03 AM

Octane booster is your friend. Safety in a can.

Chuck33079 · 08-15-2017, 09:25 AM

Quote:

Originally Posted by TBatt

Octane booster is your friend. Safety in a can.

Is there one that makes a real difference? All of the ones I seem to see around raise octane a few points, so your 91 becomes something like 91.4.

beemerkid · 08-16-2017, 08:29 AM

Quote:

Originally Posted by Chuck33079

Is there one that makes a real difference? All of the ones I seem to see around raise octane a few points, so your 91 becomes something like 91.4.

Tetraethyl lead.... But seriously, most of them are just ethanol. I've heard about people using toluene though.

jchammond · 08-16-2017, 08:44 AM

Unsure your availability of different brand products; but VP has always made quality fuels,,,I've never used this octane booster-but they offer one.

Sent from my iPhone using Tapatalk

08-11-2017, 12:57 AM	#1 (permalink)
bimbimbop Base Member Join Date: Jun 2017 Location: Seoul Posts: 140 Drives: 12 370Z NISMO Rep Power: 8	TT Tune on lower octane? Hi all, I need help from those Turbo gurus out there. I am about to get my TT tuned out here in Korea and have some questions. The tuner out here is saying that he wants to tune my car at a 95 RON (equal to about 91 Octane) instead of the 98 RON (Equal to 93 Octane). His reasoning is because he says that alot of gas stations will say 98 RON but it will really be 95 RON. Now if he tunes it at 95 RON how bad will it be if I do get a real 98 RON in the tank? Should I be worried about tuning it at a lower RON? __________________ 2012 Nismo AAM TT, CJM S1.SE Fuel System, AAM 3" True Dual Exhaust, CC 6 Puck Clutch/flywheel, Z1 engine/transmission mounts, Sparta Big Brake, ECUtek Tune, SPC Cambers, Whiteline Swaybar, KW V3 coilovers, Zspeed CMAK kit 542Whp 450TQ Last edited by bimbimbop; 08-11-2017 at 01:11 AM.

08-11-2017, 01:40 AM	#2 (permalink)
Senna-F1 Enthusiast Member Join Date: Jun 2016 Location: Cary, NC Age: 54 Posts: 425 Drives: 370SC,EliseSC,MR2T Rep Power: 50	If what he says about stations mislabeling the fuel is true, he's doing the right thing. If he tunes for 95, and you get real 98, your engine will just be MORE safe, not less. If on the other hand he tunes for 98, and you up with with 95 in the tank, that's dangerous. SouthArk370Z, B&W_Evader, Chuck33079 and 3 others like this.

08-11-2017, 03:21 AM	#4 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	What's your availability of injecting methanol to assist w/lower octane fuels. As I've heard guys in the states doing it w/93 pump gas & making good power. This could be an option for you. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

08-13-2017, 04:19 AM	#7 (permalink)
bimbimbop Base Member Join Date: Jun 2017 Location: Seoul Posts: 140 Drives: 12 370Z NISMO Rep Power: 8	Great thanks for the info guys...I was sure that running richer gas wouldn't hurt but just wanted to make sure and get your alls input __________________ 2012 Nismo AAM TT, CJM S1.SE Fuel System, AAM 3" True Dual Exhaust, CC 6 Puck Clutch/flywheel, Z1 engine/transmission mounts, Sparta Big Brake, ECUtek Tune, SPC Cambers, Whiteline Swaybar, KW V3 coilovers, Zspeed CMAK kit 542Whp 450TQ

08-15-2017, 08:34 AM	#9 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,402 Drives: slowly Rep Power: 40569	The track I go to has their own gas pumps but the price is pretty high so many people have gone into the small town gas station to get their "93". And a few of those people had blown their motors only to find bad gas in their tank. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

08-11-2017, 03:19 AM	#3 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Dope, I was looking for tuner when I was out in Seoul.

08-15-2017, 09:03 AM	#10 (permalink)
TBatt Track Member Join Date: Apr 2013 Location: Huntsville, AL Posts: 832 Drives: 2019 GT-R Rep Power: 20168	Octane booster is your friend. Safety in a can. __________________ RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!

08-16-2017, 08:44 AM	#13 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Unsure your availability of different brand products; but VP has always made quality fuels,,,I've never used this octane booster-but they offer one. Sent from my iPhone using Tapatalk __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

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