Fuel Economy Question...Again - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Jebario · 05-12-2014, 12:14 AM

Hate to bring this up again as it seems it was discussed in a turbo charger thread, but I'm curious what kind of fuel economy people are getting before and after supercharging. I've got a 2013 SS L99 and average fuel economy before installing a Magnuson supercharger was mid 17s. With or without AFM (Range Device) I was getting between upper and lower 17s. After the install on the Magnuson tune I was still getting in the neighborhood of 17 on two tanks even with laying into it semi-frequently. I have since had a complete tune for my car, my mods and my fuel octane including full AFM delete and it's a struggle to average 14.
Anyone else have similar experiences? What average fuel economy are most of you getting supercharged?
Mods: Maggie, CAI, ported throttle body, Flowmaster CAT back, ZR1 MAP sensor, MSD BAP.

Thanks,
Jeff

mrimpala02 · 05-12-2014, 08:56 AM

I don't really pay close attention to my city mileage, but I know on the highway I was getting around 22 mpg with the cam and supporting mods. Now that I'm supercharged I'm getting like 17 mpg cursing at 75 mph. It's not my DD so I can live with that given my current power level any way!

Stingr69 · 05-12-2014, 09:40 AM

23 on highway and 16 or so around town. LS-3, E-force, ZR-1 Cam and a custom tune.

We basically lost about 2 MPG around town when adding a supercharger.

-Mark.

Trob85 · 05-12-2014, 09:48 AM

A supercharger (it's said) you lose a bit of mpg because the supercharger runs off the belt drive so in theory you need to keep on the gas a bit or it loses some rpm. I read that somewhere so I don't know the truth on that. I do know turbos can help mpg though.

dreksnot · 05-12-2014, 10:15 AM

OT: My turbos have helped my mileage by -2mpg.

camarostar2010 · 05-12-2014, 10:36 AM

I drive mostly in nj and nyc. In traffic and streets my mpg is 7-8 ...On the highway its about 24-28. A world of difference. Bottomline....if you are doing fi. kiss mileage good bye.

fletchf · 05-12-2014, 11:23 AM

With cam, vortech, 3600 stall I get 9-10 in town and 15-17 on highway.

Nitroman28 · 05-12-2014, 04:17 PM

TVS2300, Cam, Heads, 3200 Stall, A6 with 3.45 gears, LT's. I get 10-12 in town, 21 Hwy running 70-80mph.

Mr. Nasty · 05-12-2014, 06:50 PM

10.5 mpg Highway or town

Indyblue98 · 05-12-2014, 06:52 PM

Getting 12-14 in town.
Took a 1700 mile road trip 19-20 most fill ups.
Average 75-85 mph on the trip.

partymn · 05-12-2014, 07:12 PM

Your pulling boost all the time, your mileage is going to be crap unless you drive like a grandmother. The tune that came with your kit was very conservative to avoid blowing your motor, your dyno tune is probably pushing the limits just a bit. If you want like stock mileage you need to go back to stock or to a turbo setup. I have a 78mm turbo and get 27 all day on the highway and 16ish in town. I would gladly trade the mileage for the low RPM grunt that you have.

05-12-2014, 12:14 AM	#1
Jebario Drives: 2013 SS/RS Black/Inferno Orange Join Date: Jul 2012 Location: Phoenix, AZ Posts: 36	Fuel Economy Question...Again Hate to bring this up again as it seems it was discussed in a turbo charger thread, but I'm curious what kind of fuel economy people are getting before and after supercharging. I've got a 2013 SS L99 and average fuel economy before installing a Magnuson supercharger was mid 17s. With or without AFM (Range Device) I was getting between upper and lower 17s. After the install on the Magnuson tune I was still getting in the neighborhood of 17 on two tanks even with laying into it semi-frequently. I have since had a complete tune for my car, my mods and my fuel octane including full AFM delete and it's a struggle to average 14. Anyone else have similar experiences? What average fuel economy are most of you getting supercharged? Mods: Maggie, CAI, ported throttle body, Flowmaster CAT back, ZR1 MAP sensor, MSD BAP. Thanks, Jeff

05-12-2014, 08:56 AM	#2
mrimpala02 Drives: Black 2SS RS w/White Stripes Join Date: Mar 2011 Location: Katy, TX Posts: 775	I don't really pay close attention to my city mileage, but I know on the highway I was getting around 22 mpg with the cam and supporting mods. Now that I'm supercharged I'm getting like 17 mpg cursing at 75 mph. It's not my DD so I can live with that given my current power level any way! __________________ 2010 2SS/RS "ChriSStine": Pat G Custom Turbo CamMotion Camshaft \| AGP TT BB Garrett 62/65's \| AGP/Fore Triple Pumps \| ID1700X Injectors \| Alky Control Twin Nozzle Meth \| Custom 3" Exhaust \| 3.27 gear set w/ Tru Trac \| McLeod Twin RXT \| Barton Short Throw Shifter \| 6th Gen ZL1 Wheels \| BMR 1.4" drop springs \| Pfadt rear trailing arms & tie rods \| Installed by Me & Tuned by Pat G

05-12-2014, 09:48 AM	#4
Trob85 Svt lol Drives: 2011 ss inferno orange blown Join Date: Jan 2012 Location: Topeka Posts: 2,312	A supercharger (it's said) you lose a bit of mpg because the supercharger runs off the belt drive so in theory you need to keep on the gas a bit or it loses some rpm. I read that somewhere so I don't know the truth on that. I do know turbos can help mpg though. __________________ plasti dip is not a mod.......and a cold air intake doesn't make you fast!

05-12-2014, 10:15 AM	#5
dreksnot Served USN - Atomic Chimp Drives: 13 Camaro LSX434 TT M6, 21 ZLE A10 Join Date: Jul 2012 Location: Fort Collins, CO Posts: 1,603 View My Garage	OT: My turbos have helped my mileage by -2mpg. __________________ In excess of 1,000WHP LSX434 \| AGP 65/65 TT \| BTR Equalizer Intake \| Trickflow 245cc cathedral \| BTR custom cam \| Cortex EBC \| n2mb WOT \| ID-1700x \| Brisk GR12S \| RPM Lv 7 TR6060 \| AGP's Triple 525LPH Fore Fuel \| Monster LT1-S Triple \| 4.11 DSS Proform 9", CF driveshaft, 1400hp axles \| Hurst Line Lock \| MGW Retro Short Throw w/old skool Hurst T-handle \| ADM solid subframe mounts \| Prothane Motor Mounts \| Revshift Poly Trans insert \| Moreno camber/caster plates

05-12-2014, 11:23 AM	#7
fletchf Drives: 2010 Camaro SS Join Date: Apr 2014 Location: Olathe, KS Posts: 98 View My Garage	With cam, vortech, 3600 stall I get 9-10 in town and 15-17 on highway. __________________ 2010 Camaro 2SS/RS - 654whp, Vortech V3si (3.33, 9psi), GPI SS3 VVT, ADM/ZL1 Fuel Pump, CircleD 3600, Kooks Longtubes, Custom Magnaflow Exhaust, Lingenfelter 3.70 Gears, Custom Transmission Cooler, Hurst T Handle, Pfadt (Springs, Sways, Trailing Arms, Toe Rods), LG Chassis Brace, Forgestar F14s (20x9.5, 20x11), Nitto NT05 (275/40/20, 315/35/20), SLP Front Lip, GM Dovetail spoiler, Alpine W910, Mosconi AS100.2, Hybrid L3 Center, Hybrid L1 Tweeters, Pioneer 10" TS-W254R Sub

05-12-2014, 09:40 AM	#3
Stingr69 '69 Owned Since '79 Drives: '69 Z/28 LeMans Blue w/White Join Date: Oct 2008 Location: LR AR Posts: 1,847 View My Garage	23 on highway and 16 or so around town. LS-3, E-force, ZR-1 Cam and a custom tune. We basically lost about 2 MPG around town when adding a supercharger. -Mark.

05-12-2014, 10:36 AM	#6
camarostar2010 Drives: 2011 SS Join Date: Nov 2011 Location: new jersey Posts: 379	I drive mostly in nj and nyc. In traffic and streets my mpg is 7-8 ...On the highway its about 24-28. A world of difference. Bottomline....if you are doing fi. kiss mileage good bye.

05-12-2014, 04:17 PM	#8
Nitroman28 Drives: 2010 Camaro SS 416/4L80 Join Date: Oct 2010 Location: Arkansas Posts: 1,834 View My Garage	TVS2300, Cam, Heads, 3200 Stall, A6 with 3.45 gears, LT's. I get 10-12 in town, 21 Hwy running 70-80mph.

05-12-2014, 06:50 PM	#9
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	10.5 mpg Highway or town __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

05-12-2014, 06:52 PM	#10
Indyblue98 2012 RS 2ss Drives: 2018 ZL1 2012 2SS WhippleCharged Join Date: Feb 2012 Location: Kansas Posts: 414	Getting 12-14 in town. Took a 1700 mile road trip 19-20 most fill ups. Average 75-85 mph on the trip. __________________ 2018 ZL1 A10 and 2012 2SS RS Whipple-Corsa-RotoFab-ZL1 Diff 3.73 Pfadt ZL Stage 3 Suspension+ Last edited by Indyblue98; 05-12-2014 at 06:53 PM. Reason: Speed

05-12-2014, 07:12 PM	#11
partymn Drives: 2014 1ss 1LE Join Date: Sep 2011 Location: Goose Creek, SC Posts: 878 View My Garage	Your pulling boost all the time, your mileage is going to be crap unless you drive like a grandmother. The tune that came with your kit was very conservative to avoid blowing your motor, your dyno tune is probably pushing the limits just a bit. If you want like stock mileage you need to go back to stock or to a turbo setup. I have a 78mm turbo and get 27 all day on the highway and 16ish in town. I would gladly trade the mileage for the low RPM grunt that you have. __________________ 2014 1SS 1LE, bone stock for now.