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Timing retarding to -10 only at WOT with unusually high load

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Old Dec 15, 2022 | 03:35 AM
  #1  
aqeelrizni's Avatar
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From: Srilanka
Timing retarding to -10 only at WOT with unusually high load

So I'd like to get your thoughts/advice on what the possible issues could be. It's an Evo 8 JDM with only TBE and 3 port BCS running MAF pushing 22 psi on pump gas 95 RON. Rest is all completely stock turbo, injectors, cams, fuel pump etc... Car is tuned on the stock ECU with about 10 degrees at red line and AFRs are rich (needs to be tuned) as the fuel quality has been an issue the last few days.

Recently I've noticed only on 1st gear WOT around 4k to 5k the car hits higher than usual load, almost 100% IDC and retards to -10 with no knock (logs attached, I do not have these negative values on my ignition tables at the same loads the car is hitting)

I have checked my FPR solenoid vacuum and other vacuum lines, all seem to be fine and in place. Logs attached for reference

Thanks in advance!






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Old Dec 15, 2022 | 09:17 AM
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CDrinkH2O's Avatar
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You don't say which ROM you are using? If you are using a Tephra v.7 ROM, it looks like a launch map is active. Please check that your Launch-Map Speed Threshold is set to 5 MPH to prevent this.
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Old Dec 15, 2022 | 09:47 AM
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From: Srilanka
Originally Posted by CDrinkH2O
You don't say which ROM you are using? If you are using a Tephra v.7 ROM, it looks like a launch map is active. Please check that your Launch-Map Speed Threshold is set to 5 MPH to prevent this.
Oops, missed that. That's right I am currently running a Tephra v7 rom. Let me check on that once I get access to the car, currently traveling on work.
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Old Dec 17, 2022 | 11:00 AM
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Agree it's launch maps.

If it's not that, I'd want the car on the dyno to if there is a corresponding dip in power, or if the ECU just isn't logging right. Sometimes you'll see random jumps like that in stock ECU logs.
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Old Sep 3, 2023 | 05:09 AM
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From: Srilanka
UPDATE: resolved the issue. The issue was my clutch switch I had wired in was interfering with my launch maps & NLTS. Re-wired correctly and a fresh ROM fixed the issue.
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