S Mode and mileage difference on/off

cjwsrt6

Has anyone noticed a difference in mileage driving with your S mode on or off? I would think that with it off you would get a little better mileage but probably not much.. anyone run the numbers?

6MT-Z34

idk if you will notice a difference but if you are worried about mpg this might not be the best car for you lol

Chuck33079

Nope. Not going to be something you can measure. Considering all S mode does is automate the rev-matching you do anyway, I'm not sure there would be any measurable difference.

__________________
2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

cjwsrt6

I already own a z I was just wondering about it earlier and figured I'd ask. Thanks for the quick replies, maybe I'll check it next fill up and see

Bking

You can do a quick test on it.

1. Fill up your tank to max
2. Drive for 50 miles normally in S mode. Fill up and see how many gallons you used
3. Drive for 50 miles normally without S mode. Do the same step 2.

Personally I find using the S mode will decrease the mileage, but it really depends on if you do a manual rev-match when you downshift or not.

Mt Tam I am

Shifts at 6000 -7000 rpm's tend to be bad mileage no matter how you slice it.

__________________
Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

DOOMMONKEY777

S-mode keeps ur rpm above 2k even when ur in neutral. I can see a slight gpm drop.

__________________
Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

aszyd

The words, they make no sense.

Please elaborate, because I can recount numerous times that my car has dipped below 2K. My daily cruise to work, when I pop it into neutral coming off on an off-ramp, sitting in traffic, etc. I never turn synchro-rev off because I am a pansy who can't heal-toe.

The only way I could see it using less fuel is if you are a master of the manual transmission and can get every downshift perfect. I'm sure there are people out there who can do it. Depending on the type of person reviewing the car, they either loved s-rev, or hated it, because they were better at it than the ECU.

To rev that quickly in all situations, it must have to dump quite a bit of fuel into the cylinders.

__________________
Competition Clutch|Fast Intentions|Maxbore|NST|Setrab|Stillen|Tomei|Uprev| Z1
Avant Garde|SPC|Stance|Whiteline
Aerojacket|Seibon|Tanabe|TRS|TWM

sizziano

Well thats the beauty of S-Mode, you can turn it off.

Haboob

What?

No, SRM does not keep your car from dipping below 2,000 RPM.

Push370zzz

You have to be joking right, how would rev matching affect gas mileage in any sort of noticeable way?

The answer is NO, you will not notice any difference. Any perceived difference will be due to how you may DRIVE with it on or off.

__________________
Range Rover Sport Supercharged
Nissan 370z Touring + Sport

cjwsrt6

Why would I be joking, it was a question, that is what this forum is here for to ask questions and learn about something. Am I wrong?

mab864

I think any difference would be so small that it would take scientific instrumentation to detect... if there is any difference at all.

__________________

SurfDog

I put in a lightweight flywheel. There is no way I could rev THAT fast and hit my target RPM. I can't imagine that using SRM has any measurable affect on MPG. it will save money replacing your clutch though. Theoretically, it eliminates most of the wear on your clutch pads. (At lest on shifts)

I forgot to turn it on at the track once and almost left the pavement. (I usually DD with it off). I don't think it would take many trips off the track and into the (hopefully) dirt to negate your fuel savings

__________________
09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

370ZinSC

I get about 1 more MPG with the SMode off. I ran two tanks with on and two with off. It really depends on your driving style though. And to the earlier point, the four tanks were not controlled and identical. So I can't say 100% that MPG is better with off.