Tunerpro data at 60 and 70 mph
- Thread starter ashman
- Start date
SBNova
New member
Re: Tunerpro data at 60 and 70 mph
Was this open loop? $59?
Interesting, I will have to compare it to one of mine. I havent made any changes in the last month, but I am pretty sure I wasnt seeing that much timing at that state of operation. I was trying more and more, but I think I usually had 30-32 deg at that point. I was trying to get more timing in without affecting other areas. I would like to compare your INJ MV to mine too. I have changed the timing quite a bit, and run as lean as 17:1 (only at certain cruise only cells) and just cant seem to get any real notable increase in mileage. I drive 90% in town, so thats probably part of the lack of MPG, but I feel I should be seeing more. I think the best in town MPG Ive gotten is +/- 16.
Was this open loop? $59?
Interesting, I will have to compare it to one of mine. I havent made any changes in the last month, but I am pretty sure I wasnt seeing that much timing at that state of operation. I was trying more and more, but I think I usually had 30-32 deg at that point. I was trying to get more timing in without affecting other areas. I would like to compare your INJ MV to mine too. I have changed the timing quite a bit, and run as lean as 17:1 (only at certain cruise only cells) and just cant seem to get any real notable increase in mileage. I drive 90% in town, so thats probably part of the lack of MPG, but I feel I should be seeing more. I think the best in town MPG Ive gotten is +/- 16.
ashman
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Re: Tunerpro data at 60 and 70 mph
yes...open loop/$59
I'm in the same boat. I'm seeing small gains with the leaner mixtures but, I'm looking for more.
The purpose of the this was get an idea of what others are seeing in their cruise areas.
25 MPG....DAMN!!!
I'd love to see a datalog of his truck.
BTW..if anyone wants the log (instead of an average)...i'd be happy to email or post it up for download.
SBNova said:
yes...open loop/$59
SBNova said:
I'm in the same boat. I'm seeing small gains with the leaner mixtures but, I'm looking for more.
The purpose of the this was get an idea of what others are seeing in their cruise areas.
SY2455 said:
25 MPG....DAMN!!!
I'd love to see a datalog of his truck.
BTW..if anyone wants the log (instead of an average)...i'd be happy to email or post it up for download.
SBNova
New member
Re: Tunerpro data at 60 and 70 mph
Id like to see a log from that truck too. I posted somewhere on this site about mileage, and noted that some third gen Camaro's were running over 40 degrees timing at some very lean ratio's with great results. That was the reason I was trying to bump up the timing, but I am having a hard time keeping a smooth curve, while only adding timing to cruise areas like 1600rpm/60kpa- which is about where I run most of the time. Since my driving is so much in-town, I was going to start reducing the AE and PE until I noticed a difference, then add some back for safety. I also noticed that I didnt engage DE as often as I wouldve liked, so I set the cells in low kpa's at RPM's greater than 1200 to a lean mixture like 17:1- creating some DE even when not in DE.
In all honesty I havent been driving the Ty much lately. Ive got my Nova fixed and Ive been driving it to reduce the mileage I keep racking up on the Ty. Ive put 5k on it since I bought it this year.
Id like to see a log from that truck too. I posted somewhere on this site about mileage, and noted that some third gen Camaro's were running over 40 degrees timing at some very lean ratio's with great results. That was the reason I was trying to bump up the timing, but I am having a hard time keeping a smooth curve, while only adding timing to cruise areas like 1600rpm/60kpa- which is about where I run most of the time. Since my driving is so much in-town, I was going to start reducing the AE and PE until I noticed a difference, then add some back for safety. I also noticed that I didnt engage DE as often as I wouldve liked, so I set the cells in low kpa's at RPM's greater than 1200 to a lean mixture like 17:1- creating some DE even when not in DE.
In all honesty I havent been driving the Ty much lately. Ive got my Nova fixed and Ive been driving it to reduce the mileage I keep racking up on the Ty. Ive put 5k on it since I bought it this year.
Re: Tunerpro data at 60 and 70 mph
I've been reading alot of tuning tips on the OBDII tuning boards (EFILive and HPTuners mainly), and some of those guys are getting great results with more aggressive DE settings, as well as altering the stock O2mv switch point. Not sure where/how these settings work in the stock chip, and I don't have a truck to really play with to find out. However I think those two are key to getting better milage.
SBNova said:
I've been reading alot of tuning tips on the OBDII tuning boards (EFILive and HPTuners mainly), and some of those guys are getting great results with more aggressive DE settings, as well as altering the stock O2mv switch point. Not sure where/how these settings work in the stock chip, and I don't have a truck to really play with to find out. However I think those two are key to getting better milage.
SBNova
New member
Re: Tunerpro data at 60 and 70 mph
Yeah I agree that my DE is wastefull, even after my attemots to lean it out some. As for the O2 switchpoint, I am currently running open loop and reading the wideband. I think when I get back to tuning the DE will get leaner, and the PE and AE are going to be attacked right after that.
Yeah I agree that my DE is wastefull, even after my attemots to lean it out some. As for the O2 switchpoint, I am currently running open loop and reading the wideband. I think when I get back to tuning the DE will get leaner, and the PE and AE are going to be attacked right after that.
SY2455
70's Veteran
Re: Tunerpro data at 60 and 70 mph
Ok, what are the DE settings? Sorry I don't have a datalog of the truck. On my last fillup I went 397 miles on 15.5 gallons of CostCo gas. The only thing I have are these readings in this post below, which I know are useless. And Ashman has already posted there. I haven't gotten into the tuning thing yet as the truck runs OK at this point, it just seems rich at idle only if you look at the exhaust pipe, but the city driving mpg work out to 17mpg.
http://www.syty.net/forums/showthread.php?t=35623
Ok, what are the DE settings? Sorry I don't have a datalog of the truck. On my last fillup I went 397 miles on 15.5 gallons of CostCo gas. The only thing I have are these readings in this post below, which I know are useless. And Ashman has already posted there. I haven't gotten into the tuning thing yet as the truck runs OK at this point, it just seems rich at idle only if you look at the exhaust pipe, but the city driving mpg work out to 17mpg.
http://www.syty.net/forums/showthread.php?t=35623
ashman
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Re: Tunerpro data at 60 and 70 mph
your truck is "THE STANDARD" at this point. I know Hood has had excellent results with extensive tuning but, your truck seems to excel, relatively stock..i think. we want to know the SECRET!!!
Please...sell your wife..kids...both..etc..and, get us a datalog!!!
i'm being slightly overdramatic
it would be nice to see exactly HOW your truck is managing this much mileage.
personally, i think it's a combination of timing and a low load on the engine.
your truck is "THE STANDARD" at this point. I know Hood has had excellent results with extensive tuning but, your truck seems to excel, relatively stock..i think. we want to know the SECRET!!!
Please...sell your wife..kids...both..etc..and, get us a datalog!!!
i'm being slightly overdramatic
it would be nice to see exactly HOW your truck is managing this much mileage.
personally, i think it's a combination of timing and a low load on the engine.
SBNova
New member
Re: Tunerpro data at 60 and 70 mph
I only see DFCO occasionally. I dont think I go fast enough for it to engage when I slow down. I know that sounds pretty sad, but I think I remember seeing it set for 30 MPH, although it doesnt always seem to engage at slightly above that.
I have my EGR disabled too, and I may go back to using it. If for nothing else but to gain the added timing and enleanment to the BPW when it engages.
DE= Deceleration Enleanment
I only see DFCO occasionally. I dont think I go fast enough for it to engage when I slow down. I know that sounds pretty sad, but I think I remember seeing it set for 30 MPH, although it doesnt always seem to engage at slightly above that.
I have my EGR disabled too, and I may go back to using it. If for nothing else but to gain the added timing and enleanment to the BPW when it engages.
DE= Deceleration Enleanment
SY2455
70's Veteran
Re: Tunerpro data at 60 and 70 mph
ashman, I was reading your 1st post again and I'm like thinking this is
. Are you saying that going down the hwy you are only seeing 8.46" of vacuum at 70mph? I'm asking this because at 75mph I routinely see 19" of vacuum if I'm just going down the road with CC engage. And at a idle it shows 25.6" when you 1st start it and as it warms up it drops to 23.9". You listed the changes on my truck when you quoted me, the only thing that I forgot to list was a 160* thermostat that I put in because I was getting some knock retard. Now the only time I see knock retard is when I have the fuel pressure turn down to 34 lbs for a smog test and that is my
.
ashman, I was reading your 1st post again and I'm like thinking this is
SY2455
70's Veteran
Re: Tunerpro data at 60 and 70 mph
I don't have datamaster at this point, so I have to borrow a friends Snap-On Scanner and the graph part of it didn't work, so all I can do is a picture like in the earlier post. If it will help I will look into borrowing it again. Let me know.
ashman said:
I don't have datamaster at this point, so I have to borrow a friends Snap-On Scanner and the graph part of it didn't work, so all I can do is a picture like in the earlier post. If it will help I will look into borrowing it again. Let me know.
SBNova
New member
Re: Tunerpro data at 60 and 70 mph
I did some quick logging today, and as always I ended up making some changes. I can see more changes are due too. I actually did some minor boost tuning, and I am glad I did because I found out my IC pump must've taken a dump. No wonder it runs so much better when the engine is cold...... Anyway, here is some quick data on the subject at hand;
MPH 56
RPM 1875
KPA 54
Sadv/tdc 34.8
TPS% 11
Inj BPW 2.56
This was an average of about 70 samples, although they were all very close. as for the AFR- I also found that the WB conversion field was way off so the reported AFR was different from the Zeitronix software reading. I have had so many problems keeping that thing in line. Almost every time I use it, its wrong by .5-1 AFR. Consider my AFR in this run to be between 14.7 and 15.5.
I think somethink is wrong with my vacuum field, it read .21 and .51 at 56mph- and neither of those is a valid number at that load obviously.
I thought I was going about 60, but it was only 56. I wasnt able to log any 70 mph runs.
I did some quick logging today, and as always I ended up making some changes. I can see more changes are due too. I actually did some minor boost tuning, and I am glad I did because I found out my IC pump must've taken a dump. No wonder it runs so much better when the engine is cold...... Anyway, here is some quick data on the subject at hand;
MPH 56
RPM 1875
KPA 54
Sadv/tdc 34.8
TPS% 11
Inj BPW 2.56
This was an average of about 70 samples, although they were all very close. as for the AFR- I also found that the WB conversion field was way off so the reported AFR was different from the Zeitronix software reading. I have had so many problems keeping that thing in line. Almost every time I use it, its wrong by .5-1 AFR. Consider my AFR in this run to be between 14.7 and 15.5.
I think somethink is wrong with my vacuum field, it read .21 and .51 at 56mph- and neither of those is a valid number at that load obviously.
I thought I was going about 60, but it was only 56. I wasnt able to log any 70 mph runs.
sytyguy
Moderated User
Re: Tunerpro data at 60 and 70 mph
Lloyd...such little load on the engine (19" vac) at speed is VERY strange. Have you verified the mph and vac readings? The average truck will see about 8-12" vac at 70 mph (my truck sees 11" with a 412 cam), and I have yet to see one pull as little as your's under load. Weird.
My truck used to get 19-20 mpg before I started chipping it heavily back in '98-'99. After going to 50's, 412, 9/11 3k, etc.... I had to do a substantial amount of work to get back around 20 mpg, and then I cheated (
) with the EGR hack I did to get up to the 23-24 I get now. It's been a lot of work, but it's paid off (literally.)
Here's a quick (from memory) rundown of what I see @ speed:
MPH - 70
RPM - 2200
VAC - 11"
TPS - 12%
ADVANCE - 32-34 deg
AFR - 15.2:1 - 15.6:1
EGR DC - 15% (with hacked EGR tables enabled)
Steady cruising under these conditions net me around 24 mpg. I'll try to get some data up for you guys this week (truck is in surgery but should be out by Friday.)
Hood
Lloyd...such little load on the engine (19" vac) at speed is VERY strange. Have you verified the mph and vac readings? The average truck will see about 8-12" vac at 70 mph (my truck sees 11" with a 412 cam), and I have yet to see one pull as little as your's under load. Weird.
My truck used to get 19-20 mpg before I started chipping it heavily back in '98-'99. After going to 50's, 412, 9/11 3k, etc.... I had to do a substantial amount of work to get back around 20 mpg, and then I cheated (
Here's a quick (from memory) rundown of what I see @ speed:
MPH - 70
RPM - 2200
VAC - 11"
TPS - 12%
ADVANCE - 32-34 deg
AFR - 15.2:1 - 15.6:1
EGR DC - 15% (with hacked EGR tables enabled)
Steady cruising under these conditions net me around 24 mpg. I'll try to get some data up for you guys this week (truck is in surgery but should be out by Friday.)
Hood
SBNova
New member
Re: Tunerpro data at 60 and 70 mph
Looking at your #'s ashman, I am using less PW and less timing than you are. I am off my a few mph but I dont think its making that much difference. I also resumed the use of my EGR today, but it didnt activate as much in $59 like it did in $58. I used to see the egr cycle quite frequently in $58, but barely saw it today. I set my timing advance to only add 2 degrees max at the two highest EGR duty cycles, and didnt change the PW correction at all.
Looking at your #'s ashman, I am using less PW and less timing than you are. I am off my a few mph but I dont think its making that much difference. I also resumed the use of my EGR today, but it didnt activate as much in $59 like it did in $58. I used to see the egr cycle quite frequently in $58, but barely saw it today. I set my timing advance to only add 2 degrees max at the two highest EGR duty cycles, and didnt change the PW correction at all.
SY2455
70's Veteran
Re: Tunerpro data at 60 and 70 mph
Michael, When I'm going down the road on cruise control at 75mph I see the following #s on the snap on scanner:
MPH 75
RPM 2550
VAC 19 - 22.1 Depending on a minor hill or not and the CC is adjusting for it.
TPS 13%
Spark Adv 24*
AFR 14.7
Des EGR .02 - 2.7
I will try and borrow my friends scanner 2 weeks from now and I will make list of the various readings from 10mph to 75mph in a increase of 10mph as the graph part is not working on his scanner. This weekend is my sweetheart B-day so I won't be doing anything with the truck.
sytyguy said:Lloyd...such little load on the engine (19" vac) at speed is VERY strange. Have you verified the mph and vac readings? The average truck will see about 8-12" vac at 70 mph (my truck sees 11" with a 412 cam), and I have yet to see one pull as little as your's under load. Weird.
My truck used to get 19-20 mpg before I started chipping it heavily back in '98-'99. After going to 50's, 412, 9/11 3k, etc.... I had to do a substantial amount of work to get back around 20 mpg, and then I cheated () with the EGR hack I did to get up to the 23-24 I get now. It's been a lot of work, but it's paid off (literally.)
Here's a quick (from memory) rundown of what I see @ speed:
MPH - 70
RPM - 2200
VAC - 11"
TPS - 12%
ADVANCE - 32-34 deg
AFR - 15.2:1 - 15.6:1
EGR DC - 15% (with hacked EGR tables enabled)
Steady cruising under these conditions net me around 24 mpg. I'll try to get some data up for you guys this week (truck is in surgery but should be out by Friday.)
Hood
Michael, When I'm going down the road on cruise control at 75mph I see the following #s on the snap on scanner:
MPH 75
RPM 2550
VAC 19 - 22.1 Depending on a minor hill or not and the CC is adjusting for it.
TPS 13%
Spark Adv 24*
AFR 14.7
Des EGR .02 - 2.7
I will try and borrow my friends scanner 2 weeks from now and I will make list of the various readings from 10mph to 75mph in a increase of 10mph as the graph part is not working on his scanner. This weekend is my sweetheart B-day so I won't be doing anything with the truck.