Results 1 to 8 of 8

Thread: 95 procharged lt1 running rich

  1. #1
    Carb and Points!
    Join Date
    May 2017
    Location
    weedville pa
    Posts
    6

    95 procharged lt1 running rich

    having touble with my 95 Camaro. its running rich around 11.8 afr at open loop. will rev up but if I push the throttle quick it cuts out. once the car warms up the reving isuue goes away but then the afr drops to 10.5 or so. I know I need to be around 14.7 at idle and 11.8 on the top end. I replaced the 02s checked for vacuum leaks couldn't find anything. I got the tunercats software to make adjustments and eehack to data log but have never used either. what should I look for in the datalog and where would I make the changes in the tune? I am wondering if telling the pcm there is a larger flow injector if it will correct and call for a smaller pulse and compensate to fix the problem. I am going to replace the header gaskets Tuesday night and check the thermostat. I really want to learn where to make adjustments in the tune to get the car running great not just running.
    95 z28m6.eagle forged 383 crank.Eagle 5.7 rods.Srp-20cc forged pistons.Dart 180 heads p&p and cc'd.5 angle valve job.2.02/1.60 valves.Custom thunder racing billet s/c cam..228/.238 .563"/.575" lift 115LSA.Comp cam dbl roller timing chain.1.6 comp pro magnum rockers.Msd opti with timing advance.#60 siemens inj.58mmTB. P&P lt1 mani.Aeromotive fuel press reg. twin walbro fuel pumps. csr electric watr pump.D1-sc 11psi.1.75 stainless LT rockland t56 moser 9''

  2. #2
    LT1 specialist steveo's Avatar
    Join Date
    Aug 2013
    Posts
    4,002
    so you have a wideband?

    does your car have a maf?

    you need to log and see whats going on. get eehack going and record a driving log and post that with your current bin

  3. #3
    Carb and Points!
    Join Date
    May 2017
    Location
    weedville pa
    Posts
    6
    have a wide band no maf just a 2 bar map sensor has speed density tune. what is a bin?
    95 z28m6.eagle forged 383 crank.Eagle 5.7 rods.Srp-20cc forged pistons.Dart 180 heads p&p and cc'd.5 angle valve job.2.02/1.60 valves.Custom thunder racing billet s/c cam..228/.238 .563"/.575" lift 115LSA.Comp cam dbl roller timing chain.1.6 comp pro magnum rockers.Msd opti with timing advance.#60 siemens inj.58mmTB. P&P lt1 mani.Aeromotive fuel press reg. twin walbro fuel pumps. csr electric watr pump.D1-sc 11psi.1.75 stainless LT rockland t56 moser 9''

  4. #4

  5. #5
    Carb and Points!
    Join Date
    May 2017
    Location
    weedville pa
    Posts
    6
    intake pipe was hot almost to hot to touch the temp never went past a 1/4 on the guage so it is not reaching op temp along with the amount of heat under the hood I'm thinking header gasket leak. intake down under the car at the intercoolers are cool. I know its going to need some adjusting the car was tuned for drag not road driving. ill get the log hooked up and record closed and open loops uploading it i will need some assistance there i am not a computer wiz by any means.. i usually stick to carbs but seen an opportunity to invest in this car and make some money it was tuned when built but something went wrong. had a wiring issue when i got it code 42 got that figured out now this. only changes to the car is an msd opti with timing advance. maybe the timing is advanced on the opti not on purpose but just by handling of the opti
    95 z28m6.eagle forged 383 crank.Eagle 5.7 rods.Srp-20cc forged pistons.Dart 180 heads p&p and cc'd.5 angle valve job.2.02/1.60 valves.Custom thunder racing billet s/c cam..228/.238 .563"/.575" lift 115LSA.Comp cam dbl roller timing chain.1.6 comp pro magnum rockers.Msd opti with timing advance.#60 siemens inj.58mmTB. P&P lt1 mani.Aeromotive fuel press reg. twin walbro fuel pumps. csr electric watr pump.D1-sc 11psi.1.75 stainless LT rockland t56 moser 9''

  6. #6
    Carb and Points!
    Join Date
    May 2017
    Location
    weedville pa
    Posts
    6
    not sure how to get the info for the tune in tuner cats i can go into tables. there is 100 different parameters to post unless there is one individual that is the tune. 1st time using the software i apologize
    95 z28m6.eagle forged 383 crank.Eagle 5.7 rods.Srp-20cc forged pistons.Dart 180 heads p&p and cc'd.5 angle valve job.2.02/1.60 valves.Custom thunder racing billet s/c cam..228/.238 .563"/.575" lift 115LSA.Comp cam dbl roller timing chain.1.6 comp pro magnum rockers.Msd opti with timing advance.#60 siemens inj.58mmTB. P&P lt1 mani.Aeromotive fuel press reg. twin walbro fuel pumps. csr electric watr pump.D1-sc 11psi.1.75 stainless LT rockland t56 moser 9''

  7. #7
    Carb and Points!
    Join Date
    May 2017
    Location
    weedville pa
    Posts
    6
    I have a short data log just don't know how to post it on here. anybody?

    what is the optimal afr for 11psi boost. Both stoich are 128 I don't really see anything wrong. I'm still getting the code 42 but car is idling fine and drives fine after entering closed loop. Afr is 11.3-12. I'm thinking just let it alone? I posted my tune. Couldn't figure out how to post the data
    Attached Files Attached Files
    Last edited by Bonemaroz28; 05-23-2017 at 06:31 AM.
    95 z28m6.eagle forged 383 crank.Eagle 5.7 rods.Srp-20cc forged pistons.Dart 180 heads p&p and cc'd.5 angle valve job.2.02/1.60 valves.Custom thunder racing billet s/c cam..228/.238 .563"/.575" lift 115LSA.Comp cam dbl roller timing chain.1.6 comp pro magnum rockers.Msd opti with timing advance.#60 siemens inj.58mmTB. P&P lt1 mani.Aeromotive fuel press reg. twin walbro fuel pumps. csr electric watr pump.D1-sc 11psi.1.75 stainless LT rockland t56 moser 9''

  8. #8
    Carb and Points!
    Join Date
    May 2017
    Location
    weedville pa
    Posts
    6
    Can anyone with a similar setup share there tables.
    95 z28m6.eagle forged 383 crank.Eagle 5.7 rods.Srp-20cc forged pistons.Dart 180 heads p&p and cc'd.5 angle valve job.2.02/1.60 valves.Custom thunder racing billet s/c cam..228/.238 .563"/.575" lift 115LSA.Comp cam dbl roller timing chain.1.6 comp pro magnum rockers.Msd opti with timing advance.#60 siemens inj.58mmTB. P&P lt1 mani.Aeromotive fuel press reg. twin walbro fuel pumps. csr electric watr pump.D1-sc 11psi.1.75 stainless LT rockland t56 moser 9''

Similar Threads

  1. 350 Vortec wi th 454 TBI running pig rich
    By rsicard in forum GM EFI Systems
    Replies: 80
    Last Post: 08-08-2015, 03:55 AM
  2. 7.4 TBI too rich
    By titan101 in forum GM EFI Systems
    Replies: 3
    Last Post: 03-12-2015, 04:44 AM
  3. 1227747 Chevy 350 Datalog running rich
    By jeepaddicted in forum GM EFI Systems
    Replies: 1
    Last Post: 12-07-2014, 07:37 AM
  4. Replies: 52
    Last Post: 11-08-2014, 02:24 AM
  5. Running rich in open loop
    By JeepsAndGuns in forum GM EFI Systems
    Replies: 18
    Last Post: 09-16-2012, 06:09 PM

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
  •