LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Anyone Disable DOD?

Thread Tools
 
Search this Thread
 
Old 04-19-2007, 08:11 PM
  #1  
Launching!
Thread Starter
 
DUSTYWS6's Avatar
 
Join Date: Jun 2004
Location: Charleston, SC
Posts: 267
Received 32 Likes on 25 Posts

Default Anyone Disable DOD?

About 85% of my milage is spent on the interstate going 75 to 80 mph. I think DOD is hurting me because I'm only getting 19.8 mph. Could I possibly get better gas milage if all cylinders were firing?
Old 04-19-2007, 08:33 PM
  #2  
TECH Fanatic
 
06 SS's Avatar
 
Join Date: Jan 2007
Location: LITH, IL.
Posts: 1,029
Likes: 0
Received 0 Likes on 0 Posts
Default

Running those speeds means too much load for the DOD to go to 4 anyway. You want better mileage? Slow down.

Other than that, get programming that will lean you out a bit at cruise and that might help you.
Old 04-19-2007, 09:06 PM
  #3  
Staging Lane
 
pgbSS's Avatar
 
Join Date: Jul 2006
Location: p-town, Il
Posts: 67
Likes: 0
Received 0 Likes on 0 Posts
Default

Set your DIC to Instant MPG and watch it while you're driving to see if it's actually going into 4cyl mode. Mine would switch in & out of 4cyl mode at those speeds. Any slight hill would kick into 8cyl, then level ground would be 4cy mode. I found on 2 lane roads going 60mph I would get about 26mpg, on the interstate going 75 was 22-23mpg. I installed the Diablo 91 DOD tune and it stays in 4cyl mode more doing 75mph and now I average 25-26mpg going that fast.
Old 04-19-2007, 10:28 PM
  #4  
TECH Fanatic
 
Kazmaniac's Avatar
 
Join Date: Oct 2006
Posts: 1,190
Likes: 0
Received 0 Likes on 0 Posts
Default

Can vouch for that - 24K in 8 months, 19.5 LTA.

70 mph speed limit on highways, I set the cruise @ 74. 20 - 22 instantaneous is what the DIC says, lotsa 4 / 8 cyl switching.

55 mph roads net the advertised 28 mpg.

DoD is ok running 35 - 55, that's where it seems to work out the best.
Old 04-20-2007, 07:16 AM
  #5  
LS1Tech Sponsor
 
06MonteSS's Avatar
 
Join Date: Dec 2005
Location: CT
Posts: 2,928
Likes: 0
Received 11 Likes on 11 Posts

Default

I'm running the Diablo Tune No DOD (DOD is disabled) - so I'm always in V8 mode, and I'm getting 20.xx mpg with 50/50 city/highway driving. On the highway I set my cruise control to 70...
__________________
06MonteSS / DiabLew Tune

2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
Old 04-20-2007, 06:45 PM
  #6  
TECH Regular
iTrader: (1)
 
jabronie78's Avatar
 
Join Date: Jul 2006
Posts: 414
Likes: 0
Received 0 Likes on 0 Posts
Default

I use the Diablo no DOD and go 70 - 75mph and the instant mpg is about 24 - 25mpg. Then do some stop and go and the total average is 21 - 22mpg. Getting the ltft to 0 really helps.
Old 04-20-2007, 09:51 PM
  #7  
Launching!
 
nighthand's Avatar
 
Join Date: Jun 2006
Posts: 254
Likes: 0
Received 0 Likes on 0 Posts

Default

I just turned mine off today. Still learning how to do stuff and have not actually driven anywhere, so...




All times are GMT -5. The time now is 01:24 PM.