I think you would be OK with the knock adjustment at this point.

 

Good, because right now I am going to either run the car off of a cliff or just throw the tuning laptop out the window. Sometimes its there, others its not, wether its 5* retarded or where it is now. So to me that is phantom, and I am going to just change the tables...

Do you agree with Applaudds suggestion to up the table by that incriment in the RPM band?

 

Curious, what are your AFRs like in the problem area?

 

The area is only between 2000 and 3000 and usually the values are between 14-12. It isn't WOT so that is a decent AFR, and this is E-85 so its okay if its a little on the lean side. I have tried adding more fuel, to no avail. I am pretty sure its a timing problem and not a fuel map issue. At this point though, it could just be a gremlin with a hammer making a home in my engine bay. I just don't know, I have tried everything.

 

Go make the timing cells static in the surrounding cells. Make them all change by 1 degree increments and taper the majority of your map...then go drive around.


remember you're on BIGMAPS...and you're jumping 3-4 degrees of advance. My vote is too steep of a timing decrease. Take a look at where you're pulling timing...

 

I've been following this thread since it was started as I have similar problems with knocking at low load. Here is my specific case; I won't make another thread since our problems appear to be so similar.

Basically, I get knock right around 85 load, which is the point at which I cross over from vacuum to boost. I often get up to 3-4 counts of knock when crossing or staying in that load area. Here is a sample from a log:



Here is the map I was running before I started trying to tune out the knock:



And what I have now, which is still knocking in exactly the same way. This is the map that was on the car for the above log. Notice the much lower timing advance.



So pulling timing has done nothing to fix the knock. There are a number of intermediate maps between the 2 I posted, I just posted the 2 extremes to show how timing hasn't affected the knocking at all. On top of that, the original tune is for 91 octane, and this log was done on a tank of 94.

Something to consider: I have a boost leak at the TB shaft seals (new seals in the mail). Since the knock happens right at the crossover between vacuum and boost, could that have something to do with it?

If not, is it safe to assume that since lowered timing AND higher octane haven't changed the knock in any way, that it is phantom knock and that I could adjust the knock tables at that rpm/load?

 

I have been FIGHTING this EXACT problem for the past two weeks. FIGHTING IT MAN. I was literally tempted to steer into on coming traffic lol.


GOOD NEWS though, I WON!!! haha.

I'm at work right now, so I can't help TOO much, but it all started when I switched to V7 and started playing with my mivec map.

To make a long story short, I started pulling timing like a lunatic to try and make it stop. Fast forward a week and the most retarded timing map you've ever seen (pun intended lol ) and I loaded the MY original Mivec map. Guess what, IT STILL KNOCKED badly. On the verge of murder, I loaded the much more aggressive stock Ignition map just for kicks.

Low and behold, the more aggressive timing helped!! It instantly started knocking MUCH MUCH less. I reverted to the the new proper MIVEC map and started advancing timing A LOT everywhere in the knock area. It instantly started making the knock more concentrated in very particular areas. In these areas alone, i started to retard timing again . GREAT SUCCESS

This is what i remember off the top of my head and I didn't read any of your thread's replies. I'm sure you and I get get this straightened out. I'm on a BPU++++ FPblack on pump and meth (but this wasn't near where meth would kick in.

Ok, back to work.

 

Well, I found a couple leaks in my IC system that needed my attention, fixed all of them and then the turbo decided to crap out of me. I am waiting on my new one from FP here this week and hopefully I can get back on the road and start this madness all over again...

 

-Acree

 

VeRy ExCiTe!!

 

updates?

 

One day I noticed I had repetitive partial throttle knocksum from 4 to 7 ?! when cruising on the highway and had no idea where it was coming from, I never had more than 2 knocksum till then.
I tried lowering the timing to lower than stock values, didn't change anything.

The culprit was : Tephra NLTS option
For some reason it upsets the whole behaviour of my car, maybe the ECU messes things up because of the unusual behaviour of the engine when you shift or something like that, the day I disabled the option I went back to my usual 1-2 knocksum.
Not only did I have knocksum counts but I had a lot of spikes of knock_adc_processed through knock_base, a lot more than with the option disabled.

Hope this helps someone, if not at least I tried

 

Thats weird I have nlts on but its always been on, never had a problem when I was running the 2.0 liter, now same map on the 2.4 knocks on spool up, anywhere from 5-15 counts no matter how low the timing or mivec gets still does it.

The nlts option of course is worth a try unless your saying u got the random knock when u actually used the nlts and it not just being active?

 

Looks like the timing map is for a stock 2.0 evo. First thing the timing is to aggressive for a 2.1 built motor, second the timing curve is needs to be smoother. If you take care of those 2 problems and make sure the air fuel is decent 12's or high 11's and in that area you probably will be running clean.

 

I just love reading your threads. You have such an awesomely simple set up that makes great power.

Good luck getting the bugs worked out. I just wanted to give you some encouragement.