06-15-2019, 10:30 PM | #1 |
Drives: 2013 Camaro with a Nova body Join Date: Apr 2018
Location: San Diego
Posts: 49
|
DFCO setting for more mileage?
I have HP Tuners and would like to tune the DFCO to give me a tad more fuel mileage under deceleration.
I have the 2013 L99/LS3 with an automatic. I also have a wideband and I have seen that sometimes it does the fuel cutoff under decal and other times it does not. I have had it tuned as well. I would like to have it cut fuel till it drops down to somewhere around 1500 rpm but in HP Tuners, it seems that the enable and disable is through TPS. Is that where I do the adjustments? And what would you guys recommend? |
06-19-2019, 02:00 AM | #2 |
Drives: 2013 Camaro with a Nova body Join Date: Apr 2018
Location: San Diego
Posts: 49
|
Figured it out. Changed CylAir to a higher figure and now it works. Guess with the new cam, stock figures were too low and engine CylAir never went that low to enable.
|
06-19-2019, 03:43 PM | #3 |
GPI Sales Consultant
|
There are a few different things you can do to extend the range of DFCO. I have mine come in fast, and stay on all the way down to 1200rpm. If you drive with DFCO in mind you can definitely pick up some MPGs.
__________________
GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
06-19-2019, 05:41 PM | #4 | |
Drives: 2013 Camaro with a Nova body Join Date: Apr 2018
Location: San Diego
Posts: 49
|
Quote:
As for enable and disable rpm settings, I have mine set at 950/850. And even with that low of a Rpm, it will still shut down around 1100ish due to MPH settings. And it works out to never stall. Hope others chime in to reveal their settings. |
|
06-19-2019, 06:01 PM | #5 | |
GPI Sales Consultant
|
Quote:
Mine never has any issues coming out of DFCO, whether in gear or stepping on the clutch at just off idle. A well tuned idle will ensure this.
__________________
GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
|
06-19-2019, 08:35 PM | #6 |
Drives: 2013 Camaro with a Nova body Join Date: Apr 2018
Location: San Diego
Posts: 49
|
You wasn't kidding with the entry speed!
|
06-19-2019, 08:45 PM | #7 |
GPI Sales Consultant
|
It still doesn't happen as fast as I'd like - there must be a preset delay that works on top of the settings you can adjust.
__________________
GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
06-19-2019, 09:54 PM | #8 |
Drives: 2013 Camaro with a Nova body Join Date: Apr 2018
Location: San Diego
Posts: 49
|
I did see a DFCO delay setting but mine is zeroed out. On my car, sometimes, it dos not go into it even though all the parameters are met. I think that the engine load has to be low or something (I'm running Automatic 6l80e). Going downhill it activates every time but uphill, at times it just does not go into it for a while. I did not see any other delays that can be adjusted.
|
06-20-2019, 06:34 AM | #9 | |
GPI Sales Consultant
|
Quote:
The DFCO delay setting is zero on mine as well - that seems like an additional time you can apply to add a static amount of delay time for DFCO entry once all other parameters are met. I've never messed with it. For me, I want DFCO to be just like it is with my old mechanical diesel truck - when I roll out of the throttle if the driveline will keep the engine turning then the fuel shuts right off.
__________________
GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
|
06-20-2019, 11:32 AM | #10 |
Drives: 2013 ZL1 A6 Camaro Join Date: Jun 2013
Location: Florida
Posts: 171
|
Personally if it was me, Thats not where Id look to improve MPG. Id look at the threshold where I can go into power enrichment.
In you HPT, go under your Fuel tab/ Power Enrich/ throttle/ Hot. Stock its about 30% throttle to enter PE. From zero to 3000 RPM range bring that up to 50%. This will tell the computer to look to go into power enrichment above applying 50% throttle in your lower cruising range.
__________________
2013 ZL1 Camaro A6. ARH Headers, K&N intake, Tuned by Tampa Tuning
2014 V6 Camaro bolt ons and E85 Tuned by Tampa Tuning |
06-20-2019, 12:54 PM | #11 | |
GPI Sales Consultant
|
Quote:
__________________
GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
|
06-20-2019, 01:43 PM | #12 | |
Drives: 2010 Camaro SS/RS Join Date: Mar 2014
Location: somewhere in MD
Posts: 4,883
|
Quote:
__________________
2010 2SS/RS
Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53 |
|
06-20-2019, 02:42 PM | #13 |
GPI Sales Consultant
|
It doesn't though, I really haven't felt much of any change in the entry time, even with it that aggressive. I kept on halving and halving the values - it seems like it has a good 0.5-1 second delay still to come in.
__________________
GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
06-20-2019, 03:36 PM | #14 | |
Drives: 2010 Camaro SS/RS Join Date: Mar 2014
Location: somewhere in MD
Posts: 4,883
|
Quote:
Edit: I emailed hptuners support to see if there are additional settings for dfco
__________________
2010 2SS/RS
Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53 |
|
|
|
Thread Tools | |
|
|