Results 1 to 15 of 27

Thread: Few questions on my 1st LT1 tune

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Fuel Injected!
    Join Date
    Aug 2014
    Age
    32
    Posts
    32

    Few questions on my 1st LT1 tune

    I have started my first LT1 tune; downloaded my stock bin the other day, and have been slowly reading into and modifying small stuff like fans, did the BLM PE WOT patch etc;

    I had a few questions about my stock bin; It had a 0 for the Injector Flow, Cylinder Volume, and the speedometer seemed to be way way off from the spreadsheet's calculations.... is this normal? I noticed so many things were way different with the 95 z28 stock bin compared to my car (other then the trans stuff, I know they are way different anyway).

    Secondly, I was wondering about tuning for CAI; Cat-Back; 3500 Stall + Shift Kit.... I will change PE WOT AFR once my wideband comes in, and add a couple degrees of timing throughout but the big question I have is tuning for the stall and shift kit.... I have only had the car for a few weeks but it definitely slaps the rev limiter leaving first, and I got damn close in second even with letting out. I have changed shift points, but I have read so many opinions about changing line pressure when you already have a shift kit; The trans has only 7,000 miles on it since the build, I really do not want it to shift "harder" but faster.. What should I look into to shorten time between shifts?

    Also, which values need to modified for a stall that big? Can I up my main line pressure to help the stall? What about TCC I have no experience with Automatics so I am completely lost there.

    Sorry for all the q's hope I can get some help.... I am worried about flashing this bin before I get an answer about those 0's.

    My edited bin is here > http://www.gearhead-efi.com/Fuel-Inj...7&d=1408227723
    My stock 1994 Camaro Z28 A4 Bin is attached below, for anyone who may want to look at it for me or need it!
    Attached Files Attached Files

  2. #2
    LT1 specialist steveo's Avatar
    Join Date
    Aug 2013
    Posts
    4,041
    Quote Originally Posted by JustinSEO View Post
    I had a few questions about my stock bin; It had a 0 for the Injector Flow, Cylinder Volume, and the speedometer seemed to be way way off from the spreadsheet's calculations.... is this normal? I noticed so many things were way different with the 95 z28 stock bin compared to my car (other then the trans stuff, I know they are way different anyway).
    that would likely be the EEB revision. best to start with a stock EE bin and flash that so everything works like planned, or use tunercat's EEB definition (there's no tunerpro EEB definition afaik)

  3. #3
    Fuel Injected!
    Join Date
    Aug 2014
    Age
    32
    Posts
    32
    I don't have a stock EE bin though, I only have my bin; I've not been able to find another 94 z28 A4 bin anywhere...

    So you say i should flash with a new bin other then my stock one edited?

  4. #4
    LT1 specialist steveo's Avatar
    Join Date
    Aug 2013
    Posts
    4,041
    well, you certainly can't edit your existing bin with tunerpro... unless someone writes a proper EEB definition for it. if you want to use your existing bin you'd have to use tunercat with his EEB definition.

  5. #5
    Fuel Injected!
    Join Date
    Aug 2014
    Age
    32
    Posts
    32
    Well I bricked my PCM good thing I bought a spare before all this... I did a EE flash and went for a drive, the speedo was maxing out and hence the values were different from my EEB bin I plugged them in there and attempted another flash, as soon as it finished I turned car off for 30 seconds then key back on and fans kicked in full speed without a high temp I knew right off... It would crank and idle but not take any gas. Now I'm gonna have to tune around DTC 83 and edit everything I can tell shift points are way different. My converter locks up ok and it's running but BLM were down around 112-115 on decel and below 128 on WOT


    don't think I'll reflash until I can send my spare one out to be repaired, I daily this car.
    Last edited by JustinSEO; 08-20-2014 at 07:46 AM.

  6. #6
    LT1 specialist steveo's Avatar
    Join Date
    Aug 2013
    Posts
    4,041
    blms always show a bit low in cell 17 (decel), 'specially on a modified LT1, that's alright.

    in EE, the trims should never be below 128 in power enrichment mode (WOT) .... unless you run a vette bin which i think will hold those trims down to 120 but im not 100% on that.

Similar Threads

  1. MAF tune
    By itsonlyanlt1 in forum TunerCat OBDII
    Replies: 8
    Last Post: 08-03-2014, 04:57 AM
  2. Help me for Tune for this set up ????
    By camy1993 in forum TunerPro Tuning Talk
    Replies: 1
    Last Post: 07-22-2014, 02:30 AM
  3. Need help with a tune
    By 1leg in forum GM EFI Systems
    Replies: 3
    Last Post: 02-26-2013, 06:10 AM
  4. $42 questions
    By Fastmax32168 in forum TunerPro Tuning Talk
    Replies: 3
    Last Post: 10-22-2012, 03:34 PM
  5. more questions...
    By PJG1173 in forum GM EFI Systems
    Replies: 27
    Last Post: 06-04-2012, 05:09 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •