help
12-12-2013, 06:25 PM
#1
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Car: 1987camaro irocz28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 373
help
need some help i just got building my 87 camaro i put aluminum heads, a thumper comp cam, long tube headers and 32lb injectors. the car starts and runs but will not idle on its own in order for it to keep running i have to keep my foot on the pedal. its also running lean.
12-12-2013, 07:19 PM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help
Why such big injectors in a 350, guys run 24's in 383's?
I suspect if you have a stock tune it will be super rich with injectors that big
12-12-2013, 10:33 PM
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Car: 1989 IROC-Z / T-Top -1987 GTA
Engine: 305 (LO3) _350 (L98)
Transmission: 700R4 _ 700R4
Axle/Gears: 2.73 L.S. - ???
Re: help
and check for vacuum leaks, as well
12-14-2013, 05:15 PM
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Car: 1987camaro irocz28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 373
Re: help
no i have not done a tune yet.
if i put a custom chip in it will it help? where is the best place to get a custom chip made...cheap?
if i put a high pressure fuel pump in it will that help the running lean issue?
if i put a custom chip in it will it help? where is the best place to get a custom chip made...cheap?
if i put a high pressure fuel pump in it will that help the running lean issue?
12-15-2013, 04:45 AM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help
Of course
You have changed so many thing away from the stock specs there is no way the computer will adjust
http://www.pcmforless.com
has good reputation for online tuning
No
A stock TPI pump is a Hi pressure pump
How do you know it is running lean?
Have you put a wideband O2 on it or datalogged it to see exactly what the computer is seeing and doing ?
What is your fuel pressure?
With injectors that big on a stock tune it should be running pig rich everywhere
You have changed so many thing away from the stock specs there is no way the computer will adjust
http://www.pcmforless.com
has good reputation for online tuning
A stock TPI pump is a Hi pressure pump
How do you know it is running lean?
Have you put a wideband O2 on it or datalogged it to see exactly what the computer is seeing and doing ?
What is your fuel pressure?
With injectors that big on a stock tune it should be running pig rich everywhere
12-15-2013, 08:55 AM
#7
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Car: 1987camaro irocz28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 373
Re: help
Well when I finished putting the parts on I started it up and ran it for about 2 or 3 mins engine code 44 piped up and it showed symptoms of a lean condition like everything got hot to quick
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12-16-2013, 09:49 AM
#11
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Re: help
I dont know anyone that has had luck using a thumper cam with EFI
12-16-2013, 06:57 PM
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Car: 1987camaro irocz28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 373
12-16-2013, 07:01 PM
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Car: 1987camaro irocz28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 373
Re: help
i did my reseach before i bought the cam and it seemed the best why to go.