Knock on Revup Running Utec ...
04-23-2008, 01:00 PM
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Knock on Revup Running Utec ...
Anyone running Utec with Revup on their FI'd car? I have this problem were I get knock around 2700rpm - 3000rpm under ECU control. This usually happen just before I hit 0 psi and I can't seem to get rid of it. ECU isn't pulling timing so I'm not sure it is false knock or not. My Knock Setting around 2000-3000rpm is 100. AAM said that Revup is notorious with this and a reflash is needed. I just want to make sure that it is a fact coz I'm thinking of getting a reflash.
04-23-2008, 01:03 PM
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Originally Posted by athenG
Anyone running Utec with Revup on their FI'd car? I have this problem were I get knock around 2700rpm - 3000rpm under ECU control. This usually happen just before I hit 0 psi and I can't seem to get rid of it. ECU isn't pulling timing so I'm not sure it is false knock or not. My Knock Setting around 2000-3000rpm is 100. AAM said that Revup is notorious with this and a reflash is needed. I just want to make sure that it is a fact coz I'm thinking of getting a reflash.
I have a Rev-up w/ utec and SFR TT kit. I need to do a log this weekend on mine. I'll let you know what i find
04-23-2008, 01:12 PM
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Originally Posted by chris'smax
I have a Rev-up w/ utec and SFR TT kit. I need to do a log this weekend on mine. I'll let you know what i find
I usually do logging every time I travel more than 20 miles
Last edited by athenG; 04-23-2008 at 04:15 PM.
04-23-2008, 01:28 PM
#4
interesting.... maybe change your open loop parameters to 0psi? What do you have your parameters at now? You sure its not shift knock? I get a little blip of knock occasionally when I first go into boost after not driving it for a day or more... maybe carbon build up? 
After that it goes away.. strange.
After that it goes away.. strange.
04-23-2008, 01:29 PM
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thats a tough spot to tune w/ the utec from what i understand because isn't that where the ecu/utec transition point is?
This is just my opinion, but i don't think that the situation you just stated is cause for extreme alarm. Certainly it is something you want to remedy, but detonation at higher torque levels is what will kill the motor, not at <1psi.
You are deff more **** than i am w/ logging that much
!!! lol
This is just my opinion, but i don't think that the situation you just stated is cause for extreme alarm. Certainly it is something you want to remedy, but detonation at higher torque levels is what will kill the motor, not at <1psi.
You are deff more **** than i am w/ logging that much
!!! lol
04-23-2008, 03:28 PM
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Originally Posted by jining
interesting.... maybe change your open loop parameters to 0psi? What do you have your parameters at now? You sure its not shift knock? I get a little blip of knock occasionally when I first go into boost after not driving it for a day or more... maybe carbon build up? After that it goes away.. strange.
After that it goes away.. strange.
Originally Posted by SpoilsofWar
What is your knock detection threshold set at in the utec?
Originally Posted by chris'smax
You are deff more **** than i am w/ logging that much !!! lol?
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04-23-2008, 05:24 PM
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I had the same problem , and my engine isn´t a rev-up.I needed to change the open loop map threshold to -1 , to solve my knocking issues around the 0 psi zone.
04-23-2008, 05:55 PM
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Originally Posted by al_v
I had the same problem , and my engine isn´t a rev-up.I needed to change the open loop map threshold to -1 , to solve my knocking issues around the 0 psi zone.
Does your problem happen in every RPM? Mine only happen around 2700-3000rpm but maybe my Knock Setting on 3000+rpm is to low to detect it.
Last edited by athenG; 04-23-2008 at 05:58 PM.
04-23-2008, 06:58 PM
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Originally Posted by Julian@MRC
Step 1: Lower your knock sensitivity to about 80
Step 2: Dont listen to the BS spewed forth by AAM trying to sell a reflash on a utec..
Step 2: Dont listen to the BS spewed forth by AAM trying to sell a reflash on a utec..
Thanks Julian. I might mix some race gas and see if it goes away before I lower my settings.
04-23-2008, 08:14 PM
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Originally Posted by athenG
Thanks Julian. I might mix some race gas and see if it goes away before I lower my settings.
04-23-2008, 09:06 PM
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Originally Posted by athenG
Thanks Julian. I might mix some race gas and see if it goes away before I lower my settings.
04-24-2008, 03:41 AM
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Originally Posted by BlackTuner
Or you can log the ecu timing. If you run less timing than what the factory ecu was running and the knock goes away. You have found your answer!
Looks like he is in need of the reflash huh?
LOL...
04-24-2008, 04:39 AM
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Originally Posted by Julian@MRC
Ahh..True...But what if he is running the ECU timing???
Looks like he is in need of the reflash huh? LOL...
Looks like he is in need of the reflash huh?
LOL...
...Say that three times fast..
04-24-2008, 08:48 AM
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Originally Posted by BlackTuner
Or you can log the ecu timing. If you run less timing than what the factory ecu was running and the knock goes away. You have found your answer!
04-24-2008, 09:02 AM
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Originally Posted by App6MT
What Julian said really. If he is running ECU timing, pulling it back will take away the knock. But it still leaves the question, WHY did it just start knocking? Mixing race gas should help, but it's only a crutch and only postpones the inevitable.
04-24-2008, 09:09 AM
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The question is if it is knock then how much does the ECU usually pull timing?
Here are some sample logs and most of the time th timing is unchanged.. I notice on one of the logs that the ECU did pull timing.
Here are some sample logs and most of the time th timing is unchanged.. I notice on one of the logs that the ECU did pull timing.
Code:
[TSMP][RPM][PSIG][MAF][TPS][LOD][KN][SIG][IDC%][IGN][VOEF][BMV][MMV][WBO2] 153.07 3568 -11.2 2.2 1 0 0 28.1 6.2 ECU 100 000 2.2 13.80 153.17 3549 -11.2 2.3 1 0 0 26.1 6.3 ECU 100 000 2.1 13.13 153.27 3534 -11.2 2.3 10 0 0 39.0 6.5 ECU 100 000 2.2 12.29 153.37 3380 -9.7 2.8 36 0 0 32.4 21.1 ECU 100 000 2.8 12.69 153.47 2808 -5.3 3.4 46 0 0 25.3 7.8 ECU 100 000 3.2 12.31 153.57 2566 -1.7 3.2 49 0 0 25.2 14.1 ECU 100 000 3.0 13.20 153.67 2670 -1.0 3.3 53 0 0 27.3 17.2 ECU 100 000 3.1 13.33 153.77 2710 -0.5 3.3 52 0 1 16.2 17.2 ECU 100 000 3.1 13.59 153.87 2686 -0.4 3.1 52 0 1 22.4 17.0 ECU 100 000 3.1 13.60 470.96 2745 -2.5 3.1 25 0 0 25.3 13.4 ECU 100 000 3.0 14.14 471.05 2743 -2.4 3.1 25 0 0 24.3 13.5 ECU 100 000 3.0 14.13 471.16 2732 -2.2 3.1 25 0 0 24.2 12.9 ECU 100 000 2.9 14.23 471.26 2759 -2.2 3.0 24 0 0 24.4 13.2 ECU 100 000 3.0 14.45 471.36 2736 -2.1 3.1 24 0 0 24.4 13.0 ECU 100 000 2.9 14.92 471.46 2732 -2.1 3.1 25 0 0 25.3 12.9 ECU 100 000 2.9 15.01 471.56 2766 -1.9 3.2 25 0 0 25.2 13.7 ECU 100 000 3.1 14.82 471.66 2761 -1.7 3.1 24 0 0 23.4 12.6 ECU 100 000 3.0 15.16 471.76 2750 -1.9 3.1 24 0 2 23.2 12.7 ECU 100 000 2.9 14.85
04-24-2008, 09:22 AM
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Code:
27.3 17.2 ECU 100 000 3.1 13.33 153.77 2710 -0.5 3.3 52 0 1 16.2 17.2 ECU 100 000 3.1 13.59 153.87 2686 -0.4 3.1 52 0 1 22.4 17.0 ECU 100 000 3.1 13.60
Side note the stock ecu pulls enough away to make the knock event stop. I am not stock ecu God but they usually have a knock correction map which they store in the ram to keep the events from reoccurring. The problem is depending on how long this correction is applied it may come back so switching to richer target in the 10 percent column would be a much safer direction to go. Also, this is the type of knock of event where you hear of someone just cruising on the highway and they just tip in and the rod immediately goes through the block.
Last edited by BlackTuner; 04-24-2008 at 09:27 AM.