ECUFlash Tune Milage and Mods
Dec 19, 2007, 03:56 AM
#46
well guys I can report this
pre-tune I get about 300km/tank
post-tune I got (today filled up) 400km/tank
now obviously there are lots of variables here, but I am seeing better mileage (kilometreage too)!
anyways IDC's are down at the top end of course
pre-tune I get about 300km/tank
post-tune I got (today filled up) 400km/tank
now obviously there are lots of variables here, but I am seeing better mileage (kilometreage too)!
anyways IDC's are down at the top end of course
Dec 19, 2007, 06:15 AM
#47
Evolved Member
iTrader: (5)
Join Date: Nov 2003
Location: Birmingham, Al
Posts: 849
Likes: 0
Received 0 Likes
on
0 Posts
I did this about a year ago to my Evo, but I modified all the load cells down to 10% so I could idle the car a bit rich to get rid of all my cam lope. I shot for around 15.7 or so under cruise conditions. The car would average 26-27 mpg at 80 after the change, up from about 23-24. I dont' own the car anymore, but one of my best friends does, and it is still set up in this same fashion with absolutely no issues to date. He does occasionally look at the LC1 to make sure that AFRs have not drifted, but other than that, its working perfectly.
Dec 19, 2007, 06:51 AM
#48
I did this about a year ago to my Evo, but I modified all the load cells down to 10% so I could idle the car a bit rich to get rid of all my cam lope. I shot for around 15.7 or so under cruise conditions. The car would average 26-27 mpg at 80 after the change, up from about 23-24. I dont' own the car anymore, but one of my best friends does, and it is still set up in this same fashion with absolutely no issues to date. He does occasionally look at the LC1 to make sure that AFRs have not drifted, but other than that, its working perfectly.
Right now I have 40-80 and 2000-4000 modified. My map last night was same load cells but only 2000-3500 and it did not change my MPG. 80mph is right at 3500 for me, so I think the car was ave between 3500 and 4000.
Dec 19, 2007, 02:28 PM
#50
Grr...Im missing something...23.5 MPG today...
Here is my af map (low oct looks similar), open loop (1 and 2 are same), and boost engine load tables.
Am I missing something? Should I go to 40 in the open loop tables or up the cells in the af map (make the values 15.7 cross the board)?
Or is this a pipe dream?
Here is my af map (low oct looks similar), open loop (1 and 2 are same), and boost engine load tables.
Am I missing something? Should I go to 40 in the open loop tables or up the cells in the af map (make the values 15.7 cross the board)?
Or is this a pipe dream?
Dec 20, 2007, 08:40 AM
#51
I have my target afrs modified all the way down to 20% load row and of course have open loop load down to 20 in the 2000-2500 cells.
What AFRs are you running at cruise? If you get it in the 15.7ish range your probably not going to see any more improvement by going leaner. For reference I test mine at three speeds (40, 55 and 75 mph) and then see what loads and AFRs I'm hitting. There's nothing really important about those speeds other than those are the areas I find myself in my daily drive.
Finally, if you're not spending the vast majority of your time cruising with little throttle changes you won't see 25 mpg. 23.5 is not that bad if this is the case. I just got under 22 on my last tank, but I was doing alot of WOT pulls to tweak my boost control tables.
What AFRs are you running at cruise? If you get it in the 15.7ish range your probably not going to see any more improvement by going leaner. For reference I test mine at three speeds (40, 55 and 75 mph) and then see what loads and AFRs I'm hitting. There's nothing really important about those speeds other than those are the areas I find myself in my daily drive.
Finally, if you're not spending the vast majority of your time cruising with little throttle changes you won't see 25 mpg. 23.5 is not that bad if this is the case. I just got under 22 on my last tank, but I was doing alot of WOT pulls to tweak my boost control tables.
Dec 22, 2007, 02:29 PM
#54
Evolving Member
Just remember - there are different tank sizes in various versions EDM, USDM, AUDM... So I am getting 320km/tank (full tank until the light comes on) without tune. I think my tank is 55litres. So it is better to state the mpg or the litres per 100km (as we are used to in Europe)
Dec 23, 2007, 07:29 AM
#56
Evolving Member
iTrader: (1)
Join Date: Jul 2007
Location: Jamaica
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
I'm getting a minuscule 160-180km for a full tank of gas. My mods are upgraded Turbo XS I.C. and full Injen Setup with cold air, what does this mean for my gas consumption 
Dec 23, 2007, 12:02 PM
#57
I normally get with my foot out of it 23.5mpg (pre mod) with 12 gallons consumed of the possible 14 in the USDM Evo. This is 282 miles per tank. I would use the first 1/4 of a tank as a kind of gauge to see what improvements if any I was getting. Baseline no mods stock I would see 75miles or so the first 1/4. Mods and tune it jumped to 90. Then when I messed around with the lean cruise I saw as much as 116. The best I have ever done per 1 tank was 26mpg for 12 gallons of fuel.
In direct contrast when I am on it hard I see in the neighborhood of 180 miles for that 12 gallons...maybe
Dec 23, 2007, 02:16 PM
#58
Evolving Member
iTrader: (1)
Join Date: Jul 2007
Location: Jamaica
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
I just love to hear my B.o.V. @ low RPM's but generally I drive conservative, dont know if thats a paradox statement , but seriously I need to tune then because this gas consumption is killing me softly 
, but seriously I need to tune then because this gas consumption is killing me softly
Dec 27, 2007, 08:13 PM
#59
Evolved Member
iTrader: (12)
Join Date: Jun 2006
Location: SJ, CA
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
I tried this today and go horrible milege, I was crusing at 15.5-15.9, but I think my funky boost controller setup meant I was actually going more into boost since I was in open loop mode. I was all highway and was at like 35 miles with a little less than a quarter burned, normally I get 60-70 at that point
Will try again and log boost/wgdc/idc
Will try again and log boost/wgdc/idc
Dec 27, 2007, 10:59 PM
#60
If you are in the loads that this effects you shouldn't be making any boost whatsoever, no matter what boost controller. If you are in boost you are already in higher load cells which would most likely make the car richer than stoic. ymmv depending on tune.
I had a chance to do another road trip down the long 5 freeway this week, the same trip I took earlier this year with the open loop trick that netted 25mpg. Without this open loop trick I averaged 24mpg.
Not really worth it to me. Others might have better results.
I had a chance to do another road trip down the long 5 freeway this week, the same trip I took earlier this year with the open loop trick that netted 25mpg. Without this open loop trick I averaged 24mpg.
Not really worth it to me. Others might have better results.
Last edited by razorlab; Dec 27, 2007 at 11:05 PM.