bigturboz28

What is considered "normal/safe" timing with pump gas (93 octane) with 9.5:1 CR.
1. Idle
2. Cruise
3. WOT (no boost)
4. WOT (boost)
5. Decel (0-50 kpa)

What is considered "normal/safe" AFR with pump gas (93 octane) with 9.5:1 CR.
6. Idle
7. Cruise
8. WOT (no boost)
9. WOT (boost)
10. Decel (0-50 kpa)

RedHardSupra

iTrader: (1)

one answer to rule them all: get on a real dyno

bigturboz28

Thank you for the feedback, (I have been on the dyno plenty). What I was looking for was an answer with some numbers. I know there is no one answer, but just a ballpark average is what I'm looking for.

bigturboz28

What do people think of these numbers...

What is considered "normal/safe" timing with pump gas (93 octane) with 9.5:1 CR.
1. Idle - 10 deg
2. Cruise - 15 deg
3. WOT (no boost) - 22 deg
4. WOT (boost) - 16 deg
5. Decel (0-50 kpa) - 25 deg

What is considered "normal/safe" AFR with pump gas (93 octane) with 9.5:1 CR.
6. Idle - 14:1
7. Cruise - 15.5:1
8. WOT (no boost) - 12.5:1
9. WOT (boost) - 11:1
10. Decel (0-50 kpa) - 16.5:1

Silver_TransAm

iTrader: (2)

I am no expert but this is my $.02

1. Idle - 15 deg
2. Cruise - 25-30 deg
3. WOT (no boost) - 22 deg
4. WOT (boost) - 16 deg
5. Decel (0-50 kpa) - up to 34 deg


6. Idle - 14:1
7. Cruise - 15.5:1
8. WOT (no boost) - 12.5:1
9. WOT (boost) - 10:8
10. Decel (0-50 kpa) - 16.5:1[/QUOTE]

bigturboz28

Thanks, that's what I was looking for...

Silver_TransAm

iTrader: (2)

Actually the decel should be about 13:1 afr

Idle should be about 15deg in park and about 20deg in drive for auto.

macca_779

What is considered "normal/safe" timing with pump gas (93 octane) with 9.5:1 CR.
1. Idle 23
2. Cruise 38
3. WOT (no boost) 24
4. WOT (boost) 18
5. Decel (0-50 kpa) 40

What is considered "normal/safe" AFR with pump gas (93 octane) with 9.5:1 CR.
6. Idle 14.63 Closed Loop
7. Cruise 15.8
8. WOT (no boost) 12.8
9. WOT (boost) 11.9
10. Decel (0-50 kpa) 20+ (DFCO ie turn the fuel off)

Tzion_ben_Arthur

iTrader: (19)

Here is what I use

What is considered "normal/safe" timing with pump gas (93 octane) with 9.5:1 CR.
1. Idle 17
2. Cruise 36
3. WOT (no boost) 28
4. WOT (boost) 22
5. Decel (0-50 kpa) 40 (I shut fuel off on Decel)

What is considered "normal/safe" AFR with pump gas (93 octane) with 9.5:1 CR.
6. Idle 14.1:1 (MS4)
7. Cruise 15.1:1
8. WOT (no boost) 13.1:1
9. WOT (boost) 11.5:1
10. Decel (0-50 kpa) 19:1

Tzion_ben_Arthur

iTrader: (19)

I wanted to say one more thing... Several years back I started off tuning with the old DFI and tried to get some so called "experts" users to give me a base map to get me started. I ran into so many brick walls that I wanted to go back to a carb and MSD ignition. These jerks were guarding their programs like the location of the "Ark" was hidden in the code. With this in mind, I want to say thank you to all those who don’t mind sharing their maps with new users. Sometimes it just takes a "kick off" to get a beginner going in the right direction and it may even save that persons engine.

P.S. If anyone ever wants to see pics of my MAPs, let me know and I will convert all of them to JPEG and post them here.

Tzion_ben_Arthur

iTrader: (19)

My EFI maps.

383, NA, 11.1:1, MS4, big heads, step headers, 4" exhaust, 4:11, 4000 yank, BBK intake and 85mm TB, about 3200 lbs. This is a SDOP, COS3 program. Enjoy and use as a reference only.