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Running Fat

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Old Dec 16, 2011 | 07:32 PM
  #1  
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From: Cal city
Car: 1986 Vett, 2001 Expedition
Engine: 383SBC 435 H/P, 500 TQ
Transmission: 700R4
Axle/Gears: 307
Running Fat

The other day going home one of my Co-works was behind me and he told me when I got on gas he said there was Black smoke as I pulled away from him.

I have a 383 with LT4 hotcam PCMforless tune.

The car is tuned for my set up but is this normal I was concern I could been running to lean at first due to the 24# injectors but now It seems it run Fat when you put your foot in to it.
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Old Dec 16, 2011 | 08:16 PM
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: Running Fat

Originally Posted by Marv02
The other day going home one of my Co-works was behind me and he told me when I got on gas he said there was Black smoke as I pulled away from him.

I have a 383 with LT4 hotcam PCMforless tune.

The car is tuned for my set up but is this normal I was concern I could been running to lean at first due to the 24# injectors but now It seems it run Fat when you put your foot in to it.

If your engine was cold ( less than 160*F ) when you hit the gas, then yes it's normal to be that rich.
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Old Dec 16, 2011 | 08:19 PM
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From: Cal city
Car: 1986 Vett, 2001 Expedition
Engine: 383SBC 435 H/P, 500 TQ
Transmission: 700R4
Axle/Gears: 307
Re: Running Fat

I dont Know but with the weather beening cold out here I know it was not up to temp yet.

Originally Posted by 305sbc
If your engine was cold ( less than 160*F ) when you hit the gas, then yes it's normal to be that rich.
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Old Dec 17, 2011 | 12:04 PM
  #4  
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Running Fat

Was it a mail order tune?
If so, have your car tuned locally..
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Old Dec 17, 2011 | 12:26 PM
  #5  
Marv02's Avatar
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From: Cal city
Car: 1986 Vett, 2001 Expedition
Engine: 383SBC 435 H/P, 500 TQ
Transmission: 700R4
Axle/Gears: 307
Re: Running Fat

Thge mail order tune seem to work fine until one my coworkers told me about the puff of black smoke.

Now trying to fine a place that tunes car around me that wont break the bank doing so.

Originally Posted by TTOP350
Was it a mail order tune?
If so, have your car tuned locally..
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Old Dec 17, 2011 | 12:43 PM
  #6  
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Running Fat

Atleast have it checked.

Take it from me, never run fat, its hard on your hips and knees...
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Old Dec 17, 2011 | 02:06 PM
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: Running Fat

lol

yeah, he said him and his coworker just left from work, so I assumed the car had been sitting for several hours, and hadn't been running very long when he nailed the gas.
That is completely normal to run pig rich while the engine temp is still very low. I wouldn't panic.
If you still see a significant amount of black smoke once the engine is up to normal temp, then I would look into a re-tune.
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Old Dec 17, 2011 | 07:41 PM
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From: Cal city
Car: 1986 Vett, 2001 Expedition
Engine: 383SBC 435 H/P, 500 TQ
Transmission: 700R4
Axle/Gears: 307
Looking for a Dyno in LA or Kern County Ca area

Well beening in Ca it time to get the car smoged I woundering will pass knowing it blows rich at WOT.

At normal cruise It seems to run clean.

So I started to look around for someone that can put the car on a rolling Dyno Tune the car around La or Kern County area that wont rip me off and charge me $700.00+ doing so if you know what I mean.

Plus I realy like to know on a real Dyno not on my computer program what H/P & TQ I realy pushing not just on a computer program.

So if anyone out there Knows some where that tunes and has a Dyno please let me know who to get a hold of.
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Old Dec 18, 2011 | 10:56 AM
  #9  
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From: Cal city
Car: 1986 Vett, 2001 Expedition
Engine: 383SBC 435 H/P, 500 TQ
Transmission: 700R4
Axle/Gears: 307
Re: Running Fat

I will order the laptop path cord I try that first.
Talking about Cheep anyone out there knows where to get a cable I found one for $50.00 I think thats kinda pricey for a path cord.
I shoot PCMforless a E-Mail already about whats gong on and see what they say about how to fix it.
Next Question I asked for a 700 RPM idle but the Chip they sent me is set at 800+ so I hope I can get this fixed at the same time.
I have try ed to reset base time just cant get below 800+ after the computer relearns it self go's back to the 800+ idle.
I just notice on U tube someone else had there set up at 700 RPM's there Idle what the idle sound I like.
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