PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

datalog and misfire

Thread Tools
 
Search this Thread
 
Old Jul 21, 2011 | 04:22 PM
  #1  
gymratt's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Mar 2002
Posts: 360
Likes: 0
From: Brew City, WI
Default datalog and misfire

Hello ls1 techers,
I was datalogging with an efi autocal after installing long tubes, catted x and new plugs/wires. The misfire current status(MFCSTAT) pid was showing an avg of 112. Is this indicative of a near miss and possible loss of performance or is it a pid of little concern? Sorry, I'm a tuning newb. TIA!!
Reply
Old Jul 21, 2011 | 04:37 PM
  #2  
joecar's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Default

Look at MFCYL1C, MFCYL2C, ..., MFCYL8C instead (i.e. the Misfire Current counters).
Reply
Old Jul 21, 2011 | 05:01 PM
  #3  
gymratt's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Mar 2002
Posts: 360
Likes: 0
From: Brew City, WI
Default

Thanks for the quick response joecar! I had another datalog with one wot entering the on-ramp and then a 55-75 mph freeway cruise for about 15 minutes. Looking at the misfire current (MFCYLC1-MFCYLC8) PID values they were:
MIN AVG MAX
MFCYL1C 0 0 2
MFCYL2C 0 0 2
MFCYL3C 0 0 2
MFCYL4C 0 0 2
MFCYL5C 0 0 2
MFCYL6C 0 0 6
MFCYL7C 0 0 2
MFCYL8C 0 0 0
Reply




All times are GMT -5. The time now is 11:42 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE