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| 1227165 ecu with custom code much better than stock ecu. (Page 7/26) |
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chetw77cruiser
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NOV 06, 02:57 PM
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I have returned from my trip today and things went great. Today I was able to manage 32 MPG with a 30+ mph headwind most of the way. Also need to keep in mind the altitude change from 4200' to 8200'. Still, overall the trip averaged 33 MPG traveling at hoghway speeds and stiff headwinds for most of it.
Keep tuning my friends.
| quote | Originally posted by chetw77cruiser:
I drove from Walden CO to Wheatland WYO through Laramie and averaged approx 39 MPG. This was at a constant 65 MPH and driving easy except to pass a couple of slower vehicles. From Wheatland to Douglas WYO on Interstate 25, traveling at 75-80 MPH, I managed 32 MPG. I was not easy on the throttle this time. When I return to Walden tomorrow, I will get some more test results. Take this info for what it is worth, but things look good so far for the 7165 and lean burn mode.
Keep tuning my friends. |
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jdv
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NOV 11, 02:58 PM
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Hi any updates on the nvram boards? This is a nice xdf.
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chetw77cruiser
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NOV 11, 07:33 PM
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No updates at this time on the nvram boards. I need to get an idea how many want to go the7165 with nvram route so I can get a more definitive price for the boards.
If anyone is interested in using this setup, let me know. Looks like the going price is going to be about $75. The ecu will need modified and I can either send information on the mod or the ecu can be sent to me, just pay for shipping.
As for my 86 SE, as long as I keep my foot out of the throttle, there is an increase in mileage around town. What is killing my mile per tank is the warmup time every morning before going to work. I can either drive cold or just deal with it. At least I have the studded snow tires on since they are calling for blizzard condtions around my area. Whoopie!
| quote | Originally posted by jdv:
Hi any updates on the nvram boards? This is a nice xdf. |
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Keep tuning my friends.
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josef644
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NOV 11, 10:01 PM
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| quote | Originally posted by chetw77cruiser:
If anyone is interested in using this setup, let me know. Looks like the going price is going to be about $75. The ecu will need modified and I can either send information on the mod or the ecu can be sent to me, just pay for shipping.
Keep tuning my friends. |
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What sort of mods are we looking at here? I am interested in doing this.
I will not be doing this until after Xmas. 9 Grandchildren. Not gonna spend their gift money set aside on my toys. I am gonna start removing my drive train tomorrow to replace the torque converter seal. Might be out of the car for a month or so.
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chetw77cruiser
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NOV 11, 10:25 PM
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The only mod is attaching a jumper wire between to connections on the pcb(board) to enable the ecu to write to the nvram. A simple enough mod, some may not be comfortable doing it. That is why I offered.
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chetw77cruiser
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NOV 13, 09:21 PM
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If you want to get started with the 7165 and the nvram sooner, you can go to www.delcohacking.net/forums/ and look for vl400, He has nvram boards that are either assembled or in kit form. The code I am using is also from this site, the OSE $12P. I have a callibration file that will get you started with the 2.8 V6. I Should have a few boards here in a few weeks as well.
Chet W.
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hercimer01
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NOV 14, 02:23 AM
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chetw77cruiser
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NOV 14, 05:03 PM
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| quote | Originally posted by hercimer01:
I am not well versed on tuning, however i have been studying the 7730 computer as a possible candidate for a swap into my 3.4PR Formula. Am I correct in assuming this is a simpler ECU mod than the 7730 as far as rewiring? Does it require a digital EGR like the 7730?
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For the wiring, there are about 4-6 wires that need to be moved, spliced, added, or removed. Most everything else stays in place. Also, with this ecu, the computer tray and connectors do not need to be replaced or changed. No need to locate a 4 cylinder ecu tray, just keep the v6 tray.
As for the egr, this code has been modified and does not have egr control like a stock code. This does not mean that the egr cannot be controlled. There are 4 programmable outputs, 3 if using an automatic transmission with torque convertor lockup. These can be setup to control the egr depending on rpm and engine vacuum.
And no, a digital egr is not needed.
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85red2m6
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NOV 15, 08:20 AM
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so if a person gets the NVRam all set up and the learning mode working, how open is it to engine mods?
I have an 85 GT 4-spd with a non-efi GMPP cam, but otherwise stock. I have the car running (although not driving yet due to a clutch bleeding issue) thanks to some manual tweaking to the idle screw, and the TPS, but it's still a bit temperamental... I have to turn the idle screw up a bit to start it and have it idle on it's own, but as it warms up, I have to turn the screw down or else the idle is up around 1500+.
I was expecting to be doing a lot of tweaking to the tune with the cam in it, but this setup could just save me a whole lot of hassles...
the other question I have (that you may not be able to answer) is pertaining to using this setup in my other Fiero with a Series1 OBD1 3800SC (from 93 SSEI Bonneville), or my 3.4 hybrid setup in my 86 Z24 Cavi... (don't have access to either car right now, so unless somebody else has access to do a look-up, I don't have ECM numbers handy)... or even my 89 Chevy crewcab with the TBI 400 SBC that I havn't started building yet, lol
This sounds like it could be an ideal setup for most of my applications------------------
1986 Fiero SE 2.8 Auto - Blackie
1985 Fiero GT 2.8 4-spd - Goldie II - To be driveable this season
1985 Fiero SE Targa - 3.8SC - long term project
1987 Cavalier Z24 2.8 5-spd - daily beaten driver
1993 Bonneville SSEi - 3800SC donor for 85 Targa
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chetw77cruiser
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NOV 15, 09:37 PM
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| quote | Originally posted by 85red2m6:
so if a person gets the NVRam all set up and the learning mode working, how open is it to engine mods?
I have an 85 GT 4-spd with a non-efi GMPP cam, but otherwise stock. I have the car running (although not driving yet due to a clutch bleeding issue) thanks to some manual tweaking to the idle screw, and the TPS, but it's still a bit temperamental... I have to turn the idle screw up a bit to start it and have it idle on it's own, but as it warms up, I have to turn the screw down or else the idle is up around 1500+.
I was expecting to be doing a lot of tweaking to the tune with the cam in it, but this setup could just save me a whole lot of hassles...
the other question I have (that you may not be able to answer) is pertaining to using this setup in my other Fiero with a Series1 OBD1 3800SC (from 93 SSEI Bonneville), or my 3.4 hybrid setup in my 86 Z24 Cavi... (don't have access to either car right now, so unless somebody else has access to do a look-up, I don't have ECM numbers handy)... or even my 89 Chevy crewcab with the TBI 400 SBC that I havn't started building yet, lol
This sounds like it could be an ideal setup for most of my applications
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This code is fairly open to engine mods, but within reason. Some very large cams may pose a problem on the transition from idle to off-idle conditions as well as low speed tune ability. Do you know what the specs are for the cam you are using? How much vacuum do you see when the engine is operating?
For engines that have larger than stock cams, there is a mode called closed throttle ve vs. rpm. When the throttle is closed (adjustable), the fueling disregards the MAP sensor and runs based on rpm. Almost like alpha-N mode, but only when at idle. Since all my vehicles are stock (currently), I have not had a chance to try this on a high-performance engine. Want to be the guinea-pig!?
During normal driving, the ve learn should do a getting the tune close to what the engine needs, but you need to give it a place to start. This means either getting a calibration that is close or be good at guessing. I would imagine that my cal file would get you in the ballpark. The nice thing about this code is that with a small program for your laptop and an aldl cable, you can flash just the calibration section of the code and not have to burn a new bin into the chip. Kind of like a power programmer for the LSx series.
As far as the 3800SC, you should have the 16141470 PCM. With some tweaking of the calibration, that engine should not be a problem. This code will work with a 2 and 3 bar MP sensor. Boost control is not native to this code, but one of the programmable outputs can be set to run a bypass valve or waste gate. We just need to make sure that the injectors are high-impedance as the 7165 could only drive one low-z (impedance) or 8 high-z injectors with out mods. This also answers the question about the 400 SBC with TBI. There are external injector drivers that come in kit form that will drive the tbi injectors with just the one inj line from the 7165.
The 3.4 hybrid should not be a problem either, just a matter of setting the spark offset correctly. If the cavalier has the stock ecu, it is most likely the 1227302. Makes this a good canidate for the 7165 swap. Same connectors, same ecu tray, and nearly the same wiring as the Fiero. I can make up a harness pinout for you to swap between the two ecu's.
Keep tuning my friends.[This message has been edited by chetw77cruiser (edited 11-15-2011).]
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