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Old 09-03-2019, 06:48 PM   #1
allmotor65stang
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Default zoomies on supercharged car

sbf type of combo but how have you guys monintor o2 reading because its telling me its supper damn rich at 2.5 on methonal setup..Egt and plug reading tell me something else 1000-1100temp..what would cause this?? Is it because its only getting reading from 1 cylinder when a collector gets it from all 4??
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Old 09-04-2019, 08:52 AM   #2
rradracer
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Default Re: zoomies on supercharged car

spark plugs tell you when its happy O2 is reference data only
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Old 09-04-2019, 10:15 AM   #3
seanss454
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Default Re: zoomies on supercharged car

Fat motor is a happy motor lean eats parts. never rely on o2's. What heat range plugs? EFI or mechanical injection?
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Old 09-04-2019, 04:57 PM   #4
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Default Re: zoomies on supercharged car

Quote:
Originally Posted by allmotor65stang View Post
sbf type of combo but how have you guys monintor o2 reading because its telling me its supper damn rich at 2.5 on methonal setup..Egt and plug reading tell me something else 1000-1100temp..what would cause this?? Is it because its only getting reading from 1 cylinder when a collector gets it from all 4??
Try 3K rpm and above. Gotta fill the tube.
But as always said, the plug donít lie.
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Old 09-04-2019, 04:58 PM   #5
Dave Koehler
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Default Re: zoomies on supercharged car

Yup, the one hole WB is a waste of money.
One hole tuning will seriously confuse an EFI
It is time for old school tuning using plugs and ET as your guide.
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Old 09-04-2019, 06:40 PM   #6
allmotor65stang
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Default Re: zoomies on supercharged car

yes its a holley EFI setup.. i always check and read plugs.. plugs are a ngk -10..
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Old 09-04-2019, 10:15 PM   #7
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Default Re: zoomies on supercharged car

Cheap way is to install bungs in all tubes and move sensor around. We do this on or NA engine with 2 o2 sensors, takes a few passes to get the individual correction right, but once we have the correction setup then you can use the 1 sensor reading as a reference. The reading from 1 hole in itself is sort of useless
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Old 09-05-2019, 09:28 PM   #8
allmotor65stang
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Default Re: zoomies on supercharged car

i do use 2 sensors but its 1 on each side.
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