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Holley Sniper |
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RandyB 
AMC Nut 
Joined: Aug/04/2020 Location: Florida Status: Offline Points: 462 |
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 Posted: Mar/08/2023 at 4:38pm |
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When I got my sniper, the TPS connect was not fully in place and one of the injector connectors was half off. I zipped tied all the injectors after hearing horror stories about connectors coming off while driving and leaving people stranded.
Currently I am looking for extra injectors, as I heard they have been known to fail.
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Randy B
68 Javelin SST 343 73 Charger Rallye 340 triple Blk |
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WesternRed
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Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5796 |
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Posted: Apr/23/2023 at 5:27pm |
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Anybody got any ideas of what's going on here with the AFR data:
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I've finally given up drinking for good...........now I only drink for evil.
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Trader
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Joined: May/15/2018 Location: Ontario Status: Offline Points: 6875 |
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Posted: Apr/23/2023 at 6:08pm |
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What's going on with the TPS?
It's reading pretty much 0 and when it does a reading everything goes wonky. Also there is no timing on this chart. Is the Sniper controlling the timing or have you got this on a completely separate loop?
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WesternRed
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Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5796 |
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Posted: Apr/23/2023 at 9:32pm |
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It’s a drag run, most of the data is at idle. It is running timing as well, but can only show so many lines on a chart. For me, it’s odd because it’s mostly on closed loop control, so not sure why it’s not bringing the AFR back onto target. Obviously a few things to check, maybe air leak or injector issue, some sort of RF interference?
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I've finally given up drinking for good...........now I only drink for evil.
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Gench
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Joined: Oct/09/2021 Location: Boulder CO ish Status: Offline Points: 182 |
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Posted: Apr/23/2023 at 10:59pm |
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Looking at CL compensation, your fuel map is lean at idle and rich in the higher RPM. I’d start by getting CL adjustments as close to 0, or slightly positive… if I remember correctly sniper can correct lean faster than rich. |
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WesternRed
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Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5796 |
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Posted: Apr/26/2023 at 1:38am |
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Just to update this, I did a number of checks and the most likely thing I can come up with is a loose injector plug. The Holley electrical connectors for the injectors are a bit of a known problem area, so I have applied the tried and trusted solution of cable tying them on.
For now it seems things are back to normal, had basically fixed itself on the last run I did anyway.
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I've finally given up drinking for good...........now I only drink for evil.
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