that vette is sweet, post up videos when you get some
that vette is sweet, post up videos when you get some
The Vette is pretty cool...:cheers:...and quite quick.
O.K. guys, I finally got to test that .cax file.
What I did was fit up the roadrunner, and did a quick log at idle while raising the minimum transient/DFCO? pulsewidth table. Once the value was raised above IBPW-offset, etc,etc the IBPW raised accordingly & this then became the minimum pulsewidth. It did not switch to the default pulsewidth table like when {B4003} is active.
In conclusion, this table needs to be lowered when trying to get big injectors to idle. You need to at least make the value equal to minimum pulsewidth.
Joe, that other Trim minimum pulsewidth table can be deleted as it doesnt appear to be active in the same way. I think it is more to do with end of injection.
Yaay, no more raping offset tables.:fluffy:
Mick,
Good job...:cheers:...RR is very handy...!!
Ok... B9021 is in, B9024 is out...
I'll sanity check the few .cax files I have and I'll post them later tonite (they're on my PC at home).
Thanks Joe.
I should have said in that last post that the new {B9021} table should be set lower than {B4003}(minimum pulse width), just to ensure that {B4004}(default pulsewidth) is still active. Though it really depends on what the tuner is trying to achieve.
Quote:
Originally Posted by 5.7ute
FYI, I went back today and instead of just using your tune file I put the cax file in my \Program Files\EFILive\V7.5\Calibrations and its working and I can see the transient minimum pulsewidth table and edit it. I thought that was pretty cool. Everyone with 60lb'ers on up should have that table!
I remember another guy having the same problem a while back with these injectors so that will be nice for future guys. I do have 80lb mototrons sitting on the shelf for my future e85 ambitions, I'm getting ahead of myself but I'm curious how well those will idle.
I tidied up the files a little, here's what I have so far...
- changed the spelling of m/sec to ms,
- expanded the description a little,
- expanded the name to "Transient Minimum Pulsewidth",
- attributed 5.7ute (MH) in the Modifications comment.
Note:
- identical files: 12202088.cax, 01250003.cax.
- identical files: 12212156.cax, 02020003.cax, 02020005.cax.
Copy the file for your OS to the folder: C:\Program Files\EFILive\V7.5\Calibrations
Open the tunetool and search for B9021, should show as in attached pic.
:)
Thanks 5.7ute(Mick)...:cheers:
Thanks Joe.
If anyone else is looking for this parameter for a different ls1 OS either post in here or pm me & I will have a look.
ryans1000, The prestart for the car went without any major hitches. We should get some vids this weekend at the opening meet.
You have a PM !
Have a friend having similar problem with 120lb low impedence injectors.
Maybe your cax file will help, but he has a different operating system.
cheers
John
Try this JohnV. There is a bit more on there, some still being tested but the main one you are chasing should work fine.(B9021)
After unzipping change name to 01290005.(there is a typo present)
Will this help me at all with 96#ers running on a versafueler? Trying to tune one for a friend and having a tough time getting it to lean to a reasonable idle AFR...
Thanks,
Bret
Not sure what you mean by a versafueller.
If you have a tune file & log with IBPW1 or 2 post it up.
Versafueler is an injector driver for low impedence injectors.
Here is a log and tune file. I made some changes trying things after this one, but they are on my tuning laptop. Also, the car doesn't have a speed sensor yet, so you have to look at the TPS to see when I was sitting idling or rolling. I was trying to use SOL (STFTs) to lean it out during this log. At least you can see what I'm working with. Thanks!
If you have an adjustable FPR, you can try reducing rail pressure (to say 3 bar) and rescaling IFR.
If the FPR is manifold referenced, measure the rail pressure with the reference hose temporarily removed (i.e. FPR open to BARO).
The ETC's are high in that log. I guess there is no real cooling system present.
Where did you get the injector data from in regards to voltage offsets etc? They look very high to me. (not saying they are wrong just look high).
B9021 is set standard & may be contributing to your issues. I will clean up the .cax & post it shortly.
Tried lowering pressure, and it didn't really effect AFR much at all... went down to 45 pounds from 60 and it leaned it out about .5 AFR average.Quote:
Originally Posted by joecar
It was having major cooling issues - they have worked on that, but it still runs hot... I could only run it a few minutes before - made it hard to make any progress.Quote:
Originally Posted by 5.7ute
They are working on a new radiator setup (turbo car without much room) now, but I wanted to do some homework and be ready when they get it running again...
The injector data was some I found from someone on here or tech - as close to the injectors that I could find. Do you have any other sources for that data? I'm having a hard time with this car all around...
Can you tell me where the instructions are for the .cax file? I have never used them before... Thanks again for all the help!!
Just unzip that file into your mycomputer/c:/program files/efilive/v7.5/calibrations folder. Then next time you open the tune file the new parameter {B9021} will be in the injectors/parameters folder. (or you could just search for B9021.)
Thanks -just found the .cax thread and the instructions - done and I can see it.Quote:
Originally Posted by 5.7ute
Any input on my comments above? I'm in uncharted territory for me... I've gotten 42# and even 60# pretty good, but these are looking to be tough.
I don't have any injector data sources sorry. Usually I will get something started with the standard injectors which we have good known data for, & work back from there. (Extremely time consuming) While this method is not 100% accurate it does seem to work.
Once you have set B9021 lower than the min pulsewidth log again & post it up. ensure MANVAC & Battery Volts are logged along with ibpw 1 or 2, DYNCYLAIR_DMA & GM.AFR. Usually we would also need GM.INJFLOW, but since you have a manifold referenced FPR this will be a constant value & not necessary. Also make sure the fuel trims are off by commanding away from stoich AFR.
Will do - Thank you so much! It will be awhile before they get the cooling system straightened out, then I'll get a chance to log it some. That log I posted was just going up the street and back and it got that hot... didn't realize how bad it was till I got back to the shop.
I have been commanding it off stoich for open loop - I was just trying it for that one log to see if the STFTs would help at all...
Are there any known injectors that would be better for me to start with as far as the data?
Anything GM related that we have data for. Something like the LS3 injectors would be a good starting point.(keeping away from boost of course)
If you can post a link to where you got the 96lbers info it might help. Or hopefully someone who has used these injectors might be able to chime in & verify your data. It might be worth starting a seperate thread asking for verification & posting a tune file in there.
I'd have to go searching to find it again. I'll make a new post and ask if anyone has data for these 96#ers... Thanks again for your help!
No worries.
One thing I did find is that the injector driver boxes also have a minimum opening time. So even if you can get the pcm to command a short PW, the injectors will still be opened by the driver box to its minimum PW. Something to think about.
Have you looked at maybe going for the ID2000 or similar. Apparently these can be driven real low, & all the necessary data is supplied.
What is the ID2000? I'm trying to work with what my friend put together on this car... but if we need to change it up, I can tell him about it. I wouldn't have done most of the things on this car the way he did, but I wasn't involved in the build, unfortunately.
Have a look here http://www.injectordynamics.com/ID2000.html
I have never used them, but from all reports they are a very good injector. They also do them in smaller flow rates so there will be something there to do the job for you.
Kinda glad I saw this. I'm running 60lbers and have dropped the FP down to about 40psi to try and combat the rich idle. I ended up "tweaking" the voltage offset table to try and bring the idle AFR in line (was in the 11's before I did this). This kinda worked for me...got my min IPW's into the 1.6 range. I don't recall see the transient min pulsewidth table though (still using the factory '99 M6 OS). I'm assuming this is something custom??? Sorry - it's late and didn't have the energy to read through the entire post thoroughly.
Yeah Jeff. Since we started making .cax files some of these table definitions are now finding there way onto here. I have made this parameter available for a few OS's now. If you cant find one for yours let me know & I will get it made up.
I havent tested B9021 on a stock standard engine as yet. I know it was active in mine & a few of the cammed cars that have had this issue. But it could be something to do with a not fully stable idle triggering a transient condition. Hopefully the stock engined car coming in tomorrow will bring some insight into this.
Cheers Mick
Car has been running good with this modification. Will future efilive releases just include access to this new table by default
I am sure if we can prove the table over all the LS1 OS's they will look at implementing it. However since .cax files will still be supported with V8 there is probably no need.Quote:
Originally Posted by ryans1000
Just to let you guys know - this helped me with the 95#ers! But, they are still having issues with the cooling system on the car - trying to stuff a 100mm turbo in between the engine and radiator has proven to not work well... At least I was able to learn something and get it to idle right. Thanks again for all the help!
Thanks for the update.Quote:
Originally Posted by BLK02WS6
Any ideas on how you will get around the cooling issues?
Not really - the guy basically built a racecar and is trying to drive it on the street... The only thing I see that they could do would be to cut the core support and move the radiator out farther to make room and then switch the fans to pullers vice the pushers they currently are. I'm not involved with the build from that aspect (thankfully), so I told them to let me know when they get it right... It will drive around okay now, but as soon as you start hitting boost, even a little, the turbo heat shoots ECT up quickly... It has a blanket, which helped, but not enough... Just too tight putting all that in the front of an F-Body...Quote:
Originally Posted by 5.7ute
Thanks, Mick! I'll try and get you a copy of my stock OS file this week and read up on what I need to do to make this work.Quote:
Originally Posted by 5.7ute
Bringing this back to the top now that I am gettin back in the game.
1) Please confirm that when I download the .cax file from Joe's March 27th post for OS 12212156 and place it into C:\Program Files\EFILive\V7.5\Calibrations, that I do or don't need to do a full flash for the change to take effect.
2) Can we get the same transient min PW table done up for the OS in the attached stock file?
I've got a cam'd car with SVO 30's and need to drop the minimums down to 1.08 to get rid of a rich decel issue. I'd also like to be able to try this out on my '99 as I'm 99% certain this is one of the major issues I coming across with it's rich decel as well.
Hi Jeff.
A full flash is only necessary when changes are made in the code section of the file, like when adding a COS. Since the changes made for min transient PW are in the calibration section of the file, a cal only flash will suffice.
I will have a look at that OS & see if I can make something up for you.
Mick
Awesome - thanks, Mick! :)
Jeff, What floor are you seeing for IBPW in the 99 Camaro?
The 99 code is a lot different address wise to the later 2000+ so will take a bit of digging.
I'm having the same problem with my turbo truck. I have the motron 60's and my ve table has always been screwed up from having the wrong injector settings. I would like to get the injector tables set up correctly so I can retune it the right way and not have the rich decel problem. Any help would be appreciated.
Attachment 10252.