If you have too much ignition timing and suffer from knock, the knock can certainly cause a rod bearing to fail but also could several other things. If one of the cylinders is advanced more than the others in the advance ignition menu it could cause that one to detonate and eventually cause bearing issues. There could be tons of issues that will make you spin a rod bearing, the only way to find that issue is to rip it apart in a clean environment and carefully inspect every piece and its clearance during the entire process.

This change only has to do with the spark energy of the coil, by making these changes the coils are getting more charge time to produce more spark energy. Anytime you make changes checking your tune is a must but this change does not increase or change your ignition timing values in any way.

I hope this answers your question.

 

so how large of a plug gap have you guys found to be acceptable with the latest settings?

mandy1 list 0.022"

spaceball1????? you mention blow-out @ 0.020", but i dont know if this is before or after the new settings?

gtvevo?

i plan on doing some tuning tonight.....i beleive I am @ 0.018 or 0.019" with no issues @ aem std settings @ 26 psi on 91 octane.......i plan to try 0.024" which should generate misfire, then i will appy the latest settings, then do another run & go from there......

 

I am using .025 gap if I recall correctly and no issues so you should be good. Thanks for the additional testing! Also are you base settings using a max dwell of 1 or .5 , the base call is .5 so I wanted to be clear you were testing the same. Thanks

 

gtvevo, that helped a bunch

 

Glad to hear that this made a difference for one more person, thanks for posting some positive results.

 

i need to review how i configured my calibration + i will also post the base settings that were run........i didnt test lastnight, as the wife was frisky.....i do have my priorities.....so after 15 seconds of vigourous work, i fell asleep

 

Thats the best excuse ive ever heard!!

 

i am currently running +.024" gap at 32-33psi. I am going to gap down just a hair to like +.022 or -.024. I got a small miss on 110 it might just be my knock control, i have it set to aggressively pull out timing.

 

I finally did my back to back compare & the results are amazing.....for me!

ok, so i did 3 pulls with:

base aem settings & plugs gapped @ 0.020 = no misifre
base aem settings & plugs gapped @ 0.024 = BIG MISFIRE
GTVEVO ideas/settings & plugs gapped @ 0.024 = no misifre

my base settings are coil dwell @ 35 / dwell max @ 0.50 / dwell min @ 0.05

dwell vs rpm = 105/105/103/102/104/94/78/67/54/45/43 0-8000 rpm

my new settings are coil dwell @ 35 / dwell max @ 1.25 / dwell min @ 0.10

dwell vs rpm = 90/90/90/90/105/105/105/105/105/105/105 0-8000 rpm

yeah, so i did a run. went to a safe place, pulled the plugs & opened the gap up to 0.024".

the misife was pretty bad with the base aem evo8 settings with the plugs gapped @ 0.024". I originally thought the plugs were gapped tighter...but they do have ~4k miles on them.......br9eix

so i pilled over, i applied the new ignition settings & no misife! Great. Now i wanted to see the power numbers & when i did, i was stoked. Not only did i gain a calculated 10whp @ peak, i also picked up ~17 @ 6500 rpm!

before anyone gets worked up on the calculted numbers, they are BASED OFF OF A DYNO JET.

Regardless, you can see the rpm out accelerating the base run!!

All 3 runs were performed within 30 minutes.

Thanks for everyones input

 

Aby, Thanks for the testing and data. This shows some good improvement made from these changes and once again justifies how several of us felt.

 

Damn these forums are awesome!!!
GTVEVO and spaceball ftw!!

 

Can you elaborate on this? What were the lower RPM settings you chose and what were the results?

 

Also, I am running the AEM EMS 1313 on my Evo VIII with the stock coils, HKS DLi-II, and Nology Hotwires, with NGK BPR8ES plugs gapped to .022". Have been experiencing misfire/spark blowout at 32-33psi. Nowhere have I been able to find a definitive answer to the correct settings for the following;

Coil Dwell Factor
Dwell Max
Dwell Min
Dwell vs RPM Table

Is the HKS DLi-II a CDi, and if so, should I choose ALL CDI Systems from the AEM Coil Dwell Wizard? Please help!

 

The DLI unit is not a CDI, its is an amplifier to increases current output to each plug. I don't see an issue with running the All CDI settings as they are less than what I am running and have posted in this thread on the stock EVO coils. CDI boxes just need a square wave signal from the ECU since they generate all of the spark and spark energy calculation. You should just test the same settings that we are running and you might have even better results since maybe the DLI will be able to amplify the spark even further.

 

When running a SparkTech COP, do settings need to change in the AEM for the IX?

-E