my 04 is 28-30 on the highway around 20 in the city. if the surface is flat for a good # of miles then it will get even better. the most on flat ground in okla. i have gotten 34 a few times. but mostly the 28-30. i commute 110 miles to work and back.
Im lucky if I get 17 in the city and 21 on the freeway.
1 of 15,Magnaflow Mufflers. K&N filter. 3800 TCI Converter and trans beefed up and rebuilt by Mikes who is a Hack Racing Autos. Modded stock airbox for true cai. Pacesetter long tubes with SLP high flow cats. Awesome tuning by Sam. AZA Z-1 Staggered 18's. Drag Bags. Full Noltec rear camber kit. HID headlights. .......2 years ago at Ennis 13.1 at 104mph and a 1.8 60 ft.....Friday Oct 24th at Denton PB of 1.78 60 ft and 7.96 1/8th at 86.36mph. Torquer V2 cam installed and dyno tuned.
I believe the new SAE ratings are only estimates for our cars since we did not have a 2007 model to actually test (when the SAE ratings went into effect). While I thing the new estimates are more accurate, my LS2 will get a just a bit under 27 mpg on a highway trip; much more than the new SAE estimated standard. However, 15 mpg around town is closer than the original rating although I usually manage 16.2 mpg around town and in traffic.
2001 10th anniversary Firehawk. Bilstein Suspension, Auburn rear, M6, GMMG Cat-Back Exhaust, SLP LID, SSRA. Car #30 of 139. First and only time at track: firstname.lastname@example.org MPH
Your forgetting the fact that the ls2 has much better heads and higher compression. The engine is more efficient than the ls1 was. Motor for motor the ls2 will get better mpg.
What? Motor for Motor, LS1 vs. LS2, the LS1 get's better MPG.
Now hypothetically, if you compared a 5.7L LS1 against a 5.7L LS2, then the LS2 *might* get better MPG. However there is no such thing, so your statement holds little value. In the REAL world, LS1's get better MPG.
2009 Jet Black 535i Sport - ? whp / ? wtq
JB4 tuner | Dual Cone Intake | 15mm rear spacers | smoked side markers | 30% E85 |
Previously: 2004 QSM GTO M6 - 340 whp / 347 wtq
Kooks LT's | Catted mids | ASP UDP | 4" Hardcore intake | GMM Ripshift-Race | RPM Level IV T56| Lovell's 3/4" drop Eliminator kit, strut mounts, HD tie rod ends, radius rod bushings. diff mount | Pedders HD endlinks, sway bar bushings | Magnecore wires | 280Z-vented hood |
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