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WOT Ignition Values
Posted: Wed Nov 10, 2010 3:32 pm
Looking for feedback as to what would explain why my ignition values are lower than expected. In columns 8-10 on the high cam ~4300-4700 my ignition values are 18* rising to ~24*/25* at max rpm. Anymore and I start to see some knock. These values are lower than the base calibrations and other tuned calibrations I've seen.
Part throttle values (columns 3-7) are all similar to the base calibrations and other tuned calibrations.
From a engine theory standpoint I'd like to know why...
Engine runs great, has lots of power.. just curious as any other calibrations I've seen generally have much higher IGN values.
K24a2 /w 06 K24a2 intake cam
2.5" exhaust and high flow cat (Stock muffler)
Posted: Wed Nov 10, 2010 3:55 pm
Posted: Wed Nov 24, 2010 4:44 pm
Just a theory question but good point, you may pick out something I don't see. BTW: I put this in the wrong forum, I have Kpro.
Serial number 2547 (Hardware version 1.0, Firmware version 1.0)
2002 Civic SiR
2.5 inch exhaust (Stock Muffler)
Metallic Spun core cat
06 TSX Intake Cam
04 TSX Motor
91 Octane PetroCanada
3" Cold air Intake (Custom)
Posted: Fri Nov 26, 2010 3:53 pm
Posted: Wed Dec 01, 2010 8:22 pm
Still looking for some assistance.
Posted: Tue Dec 07, 2010 5:59 pm
Spunkster: I provided all of the information you asked for -- can you provide some feedback please?
Posted: Wed Dec 08, 2010 10:21 am
You have over a 20 minute datalog. You need to give specific times this is happening or note them in the datalog.
Posted: Wed Dec 08, 2010 10:42 am
Spunkster wrote:You have over a 20 minute datalog. You need to give specific times this is happening or note them in the datalog.
There are no specific times because it's always the case. As I mentioned, this is more of a theory question as to why my ignition values would be so low "in general" compared to other similar configurations and calibrations.
In column 7 I start to run 13.5 A/F and open loop (80kpa) but should I? Would this have an effect on ignition values? In WOT, my ignition is low 17 to 23 degrees, which even the stock tunes start much higher...
Is this a result of a tuning issue that you can see or an efficient exhaust or something else? Just looking for some ideas.
Posted: Wed Dec 08, 2010 2:11 pm
Why is your IAT only 26 degrees after 20 minutes of driving?
Posted: Wed Dec 08, 2010 8:38 pm
Spunkster wrote:Why is your IAT only 26 degrees after 20 minutes of driving?
I have a CAI and live in Canada. It gets pretty cold here!
Posted: Thu Dec 09, 2010 11:20 am
The IAT being so low is causing you to have ignition compensation.
Posted: Thu Dec 09, 2010 4:18 pm
Spunkster wrote:The IAT being so low is causing you to have ignition compensation.
I'm talking about table ignition values. I tuned in Summer and they needed to be low to avoid knock.
Posted: Thu Dec 09, 2010 4:31 pm
Look at your ignition compensation values and you will see that you are retarding alot of timing when it is cold.
Posted: Fri Dec 10, 2010 9:08 am
Spunkster wrote:Look at your ignition compensation values and you will see that you are retarding alot of timing when it is cold.
Sorry, maybe I'm not being clear in my post. I understand temperature compensation retards ignition and that's all good.
Here's what I'm trying to understand.
* I tuned my car in summer (temp was about 75 degrees)
* At WOT, the stock tune had too much timing.
* I had to set my timing at WOT much lower than stock to prevent knock.
Why this doesn't make sense to me
* All other calibrations I've seen for K24a2's have much more ignition, especially considering the supporting modifications I have (CAI, exhaust, free flow cat, 06 Intake Cam etc..)
*What would potentially explain the reason why my table ignition values are comparatively lower?[/list]
Posted: Fri Dec 10, 2010 1:01 pm
Have you checked your CAMs to make sure you are not off a tooth or 2 on either the cams or crank?? I've seen that affect the amount of timing you can run.