PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Smelling rich

Old Dec 20, 2024 | 09:22 PM
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Default Smelling rich

My engine smells rich, but the wideband isn’t reading overly rich. I’m running 93 octane, had the engine tuned by a guy remotely and it drives great. If I lost my tune here could some one look it over for me? I’ve been reading and seen that it could be injector timing causing it to smell like it’s rich. But I’m not sure how to adjust that. I have hp tuners and would like to learn how to use it but at the same time I don’t wanna mess up my ecm.

5.3 sbe, sloppy stage 2, shorty headers, truck injectors, sheet metal intake, stock throttle body, pac 1218 springs.
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Old Dec 20, 2024 | 09:48 PM
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A while back my 2010 Camaro SS after I cammed it smelled like fuel real bad. I ended up playing with the injector timing and got it a lot better. I honestly don't remember how to do it but I'm sure someone can help you.
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Old Dec 21, 2024 | 06:36 PM
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Yeah that’s what I was thinking was injector timing just not sure how to go about it.
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Old Dec 21, 2024 | 08:02 PM
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This may be useful. Opinions seem to vary. That is only for gen3 computers. If you have a gen4 it will be completely different.
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EOIT caculator.xlsx (34.9 KB, 38 views)
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Old Dec 24, 2024 | 04:11 AM
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You put cats back on it.
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Old Dec 24, 2024 | 07:53 AM
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Originally Posted by LilJayV10
You put cats back on it.
I did, that was the first thing I tried
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Old Dec 24, 2024 | 07:43 PM
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Originally Posted by Miket1989
I did, that was the first thing I tried
Damn....

Do you have a copy of the tune and a log you can post?
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Old Dec 28, 2024 | 12:17 AM
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Originally Posted by LilJayV10
Damn....

Do you have a copy of the tune and a log you can post?


I have a couple tunes that i'm posting, the 20sept1 tune was before i adjusted the eoit, the fuel timing trial is after i adjusted it based on a calculator i found online. and the log is after i adjusted it and the drive5 log was before i adjusted it.
so basically the tune 20sept1 goes with log drive5 and fuel timing trial goes with eoit adjusted
Attached Files
File Type: hpt
20sep1.hpt (235.3 KB, 23 views)
File Type: hpt
fuel timing trial 1.hpt (235.4 KB, 20 views)
File Type: hpl
eoit adjusted.hpl (1.18 MB, 20 views)
File Type: hpl
drive5.hpl (494.6 KB, 20 views)

Last edited by Miket1989; Dec 28, 2024 at 12:20 AM. Reason: added file
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Old Dec 28, 2024 | 12:51 AM
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Originally Posted by Miket1989
I have a couple tunes that i'm posting, the 20sept1 tune was before i adjusted the eoit, the fuel timing trial is after i adjusted it based on a calculator i found online. and the log is after i adjusted it and the drive5 log was before i adjusted it.
so basically the tune 20sept1 goes with log drive5 and fuel timing trial goes with eoit adjusted
It looks like its MAF only tune. Have you forced SD and tuned the VE table any?

By the way the VE table looks, the answer to that question is no.
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Old Dec 28, 2024 | 12:57 AM
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Something that caught my attention, the MAP sensor is showing 20kpa at idle and 35-38kpa while driving.

That's not possible.
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Old Dec 28, 2024 | 08:49 AM
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Originally Posted by LilJayV10
It looks like its MAF only tune. Have you forced SD and tuned the VE table any?

By the way the VE table looks, the answer to that question is no.
i have not. The tune was done by a guy in Louisiana but from the start I was having issues with it so I’ve been trying to learn how to tune it. I don’t know how to tune the ve table or anything. I’m new to all the tuning part of this. As for the map sensor I’m not sure why it’s reading like that. It’s plugged into the intake with a silicone hose.

Last edited by Miket1989; Dec 28, 2024 at 10:46 AM. Reason: Spelling errors
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Old Dec 28, 2024 | 02:25 PM
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Originally Posted by Miket1989
i have not. The tune was done by a guy in Louisiana but from the start I was having issues with it so I’ve been trying to learn how to tune it. I don’t know how to tune the ve table or anything. I’m new to all the tuning part of this. As for the map sensor I’m not sure why it’s reading like that. It’s plugged into the intake with a silicone hose.
Shoot me a PM
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