DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.

can some one help me lern

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Old Sep 18, 2004 | 10:17 PM
  #1  
c4boom's Avatar
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From: concord New Hampshire
Car: 87 iroc and 88 k2500 tbi truck
Engine: l98 and lo5
Transmission: 700 r4's babby
can some one help me lern

ok first things first
motor is lo5
edelbrock shorties, a comp cam extreme energy cam 12-249-4 with .434 lift intake .444 exhaust and 206/212 deg at .05 this is on a 112 lsa and a holley tbi intake with the 670 on top with 65pph's in it. fergot to add 3 " hiflow cat into flowmaster 50 with 2, 2.5's out the back

i just dont under stand why the blms are how they are, is there some thing wrong with the motor or is it normal for a motor like mine on the stock chip be rich every where.

i have a log file but no clue on how to post it but hear is a snap shot of my blm table
Attached Thumbnails can some one help me lern-blm.jpg  

Last edited by c4boom; Sep 18, 2004 at 11:35 PM.
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Old Sep 18, 2004 | 10:36 PM
  #2  
thirdgen88's Avatar
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
BLM's below 128 indicate that the computer is pulling fuel from its base calibration upon input from the oxygen sensor.. Stock chip probably needs to go bye bye..
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Old Sep 18, 2004 | 11:29 PM
  #3  
c4boom's Avatar
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From: concord New Hampshire
Car: 87 iroc and 88 k2500 tbi truck
Engine: l98 and lo5
Transmission: 700 r4's babby
i hear ya there but wouldnt a stock chip be lean on a more effecient motor

Last edited by c4boom; Sep 18, 2004 at 11:33 PM.
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Old Sep 19, 2004 | 03:57 AM
  #4  
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Where's your fuel pressure at?
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Old Sep 19, 2004 | 08:08 AM
  #5  
thirdgen88's Avatar
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
Originally posted by c4boom
i hear ya there but wouldnt a stock chip be lean on a more effecient motor
Not necessarily... You have to consider _where_ your engine is more efficient. ben73's also got a point, if your fuel pressure constant isn't correct, your fuel map will be skewed.
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Old Sep 19, 2004 | 10:45 AM
  #6  
c4boom's Avatar
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From: concord New Hampshire
Car: 87 iroc and 88 k2500 tbi truck
Engine: l98 and lo5
Transmission: 700 r4's babby
fuel pressuer is 15 psi the holley injectors are 65pph @ 21 psi thant works out to like a 54.9pph injector the stockers are 55pph on a 350 truck tbi i thought that or i am going to have to adjust the constant and i have to figure out what i have in there.
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