Anyone? I have the latest $EE from TC (dated 2008/02/21) and it doesn't exist in there.

 

Anybody have some data to post?

I've been hitting this tune pretty hard... meaning random mph vs rpm vs gear while dropping 100%TPS at random... new Z06 pulls up about 80mph... suddenly the TA drops into 3rd gear...then 100%TPS thru 140mph.. Z06 owner all pissed off im sure...

PCM's responding with 0 problems... no knock.. still repeatable WOT AFR's. Before the baro reset mod fueling was a mess in this situation.

 

exactly why I dont empty the box.. I hate "READING" what people send to PM boxes.

Forums are here for people to refer too. Any idea how long it takes to resolve a problem when you finally find something your talking about only to find out it ends in.. PM SENT??

AKA - MY PM IS FULL ON PURPOSE.

Post if you dare. Thank you.

 

you responded to my email so

Thanks again!!!!

 

My file from TC was received 3-10-08, file is dated 3-10-08. Send TC some money and you'll get the updated file Im pretty sure.

This is simply the single most important update for 2bar MAP users to date and TC should get all credit for it. LT1_Edit can do it however they dont update software very often or make it easy.

 

I'm OBDII and TC sent me an updated vdf_08 version X and it Includes the Baro Update RPM Threshold.

 

I figured since it was something only a few people had and since it wasn't included in the standard $EE file, you guys had something custom.

My $EE is paid for. All you had to say was email TC for it...

 

Is there any chance that JET will update there stuff with this new Baro update???????? Or could I get someones tune for OBD2 that has this set so I have a place to start?
Any help would be appreciated.
Thanks

 

I recently tried this tune in my 396 LT1 w/ 42# injectors. I changed the constant for my 42# to 22#'s. Am I correct in doing this? I also changed the cylinder volume size for my application. After doing this, I installed the 2 bar map sensor, unplugged my maf, and installed the 2 bar tune (although w/o the new defintion file. Just received it today via email) my car will start but immediately die. Wont stay started. This is the 2 bar tune, engineermike sent me. Dont know if or what Im doing wrong. Im confused. Can anyone help a brother out... Dookie, Mike, bueller........

Thanks,

Eric

 

Could be any number of things. Try giving it some gas to see if you can keep it running and get a sense of whether it's rich or lean. It may be that the injector constant isn't low enough. Mine is 30 for 84's. Also, the minimum pulsewidth may be messing it up. I think that would make yours way too lean at idle.

 

Cool, thanks. I did give it some gas, but it persisted to die. I didnt wanna try and mess with it anymore, so I disconnected everything and put everything back to the the way I had it for now.

Yeah, I dont have as big an injector. I plan on getting either Mototron 60#'s or the Racetronix 79#'s.

Do you think I should hold off on this tune, until I get me a little larger injector. Or, maybe change my minimum pulsewidth to what I had in my orginal tune and going from there? Im really, really "green" at all this stuff. Im sorry.......

How do you figure what value to use for your minimum pulsewidth? Is there a certain formula I could use?

Man, this is some scary sh#t!

Eric

 

I had the same problem. My car ended up being to lean to run. My injector constant is at 15 and I have 60 lb injectors.

I wonder if there is a point to where you can set the constant to low?

 

The problem is this. . .

When I sent you the tune, it had a minimum PW of 1.4 ms. Mine ran rich from 25 kpa and down, so I kept lowering the VE and it stayed rich. Later, I lowered the minimum PW down to 1.0 ms and everything at low load went way lean. Before, the 1.4 ms PW was "propping up" the low load end of the VE table. When I got rid of the "prop", it went lean because my VE values had evolved into numbers way too low.

With your 42's, the minimum PW of 1.4 is probably fine. So, the low end of your table is probably very lean. As a test, you can raise the minimum PW to 2.8 and it runs ok, then that's the problem. Put it back to 1.4 then start richening up the low load VE.

Mike

 

I agree with what the Engineer has to say,

Im also thinking you might not want to bother with this tune until you get larger injectors only because the amount of work involved getting your base tune right then one day probably soon you will change injectors and it will be all messed up again.

I think I was maxing my 42lb's with 6-7psi if I remember correctly?

In the meantime you could lower your injector constant some more... maybe to 15-20? Sounds like it's lean since it fires right up then stalls, that's what mine did when lean. Usually too rich wont fire back up right away since it's basically flooded and you went too low.

If you look at your injector size vs entered number you'll see it's much more than 1/2 off, my 82lb = ~30, EngineerMike's 84's = 30, Jchevy's are 60's = 15, you might even need lower to less than 15 for 42's. Some of the "extra" taken off was to cure lean tip in, but you could try and see what happens. If you lower it too much and it only fires once then stalls and never re-lights, then it's flooded.

I would simpy lower the injector constant more and if that doesnt work perfect then wait for some larger injectors and save yourself some hassle unless you enjoy constantly programming your PCM... I think Im at ~220 loads or so? I started numbering around the 100th or so file, and started the sequence at 1, now I'm at about 131 or so... I might be done for awhile until I hook up my widewand simulated 02's...

 

Man, you guys are great! Thanks for all the help and information. Im not really looking forward to keep loading tunes, so it'll stay 1 bar for a while longer. I think I will wait and order some larger injectors.

Im leaning towards the racetronix 79#'s.

Once again, thank you all for your help.

Eric Bazan