Data Logs! Post them here.

[JB86'd]

Originally Posted by Phantobe

Damn this tuning stuff is starting to become frustrating lol.

91 Chevron - Tuned with some timing pulled
Everything looks great for like 2 weeks IAM hardly drops below 1.0. Now all the sudden another week later im getting 3 degrees of timing pulled & IAM drops to .49!

@JB86'd since we both are running the same shitty petrol, have you experienced anything like this? I feel like I can't win lol.

That's a huge difference..I would think a bad tank of gas, or an exhaust leak has developed and is throwing things off majorly. I would say gently run this tank of gas to E and try a different station, maybe try Shell like I've switched to. My IAM hasn't dropped below 1 lately.

[Phantobe]

Originally Posted by JB86'd

That's a huge difference..I would think a bad tank of gas, or an exhaust leak has developed and is throwing things off majorly. I would say gently run this tank of gas to E and try a different station, maybe try Shell like I've switched to. My IAM hasn't dropped below 1 lately.

I was running shell before chevron, chevron seemed good for the first couple weeks O.o

What kind of timing are you pulling do you have a snapshot of your tables? I haven't been pulling that much just in the 2-4k RPM region. I guess I'll just ride this tank out and see if my IAM improves over time.

[Celadrielas]

Originally Posted by steve99

Mate i know you not going to like this ,but i think its all due to the AEM intake and the hardware chip thingo that probably adjusts maf readings. Just been doing some scaling on those intakes and they are a pain , suggest you go back yo stock intake with a drop in filter and sell the aem to someone.
Or buy grimspeed intake they are very close to stock scaling and you wont have these dramas

The sad part is you're correct. I know you are. I've been looking at that. and removing that chip thing is causing problems too. I may be going back to all stock here.

[JB86'd]

Originally Posted by Phantobe

I was running shell before chevron, chevron seemed good for the first couple weeks O.o

What kind of timing are you pulling do you have a snapshot of your tables? I haven't been pulling that much just in the 2-4k RPM region. I guess I'll just ride this tank out and see if my IAM improves over time.

stage 2 UEL 91 octane...as far as I know this is safe but no guarantees, I'm no expert.

[steve99]

Originally Posted by Celadrielas

The sad part is you're correct. I know you are. I've been looking at that. and removing that chip thing is causing problems too. I may be going back to all stock here.

Mate i can give you the scaling i did but its on straight petrol not 10% ethanol fuel and without chip thingo, not sure how it will go, but if you want it let me know, managed to get trims to about 5% , but those aem intakes seem turbulant or something a real pain to get low trims on and correct afr.

[Kodename47]

Originally Posted by Phantobe

I was running shell before chevron, chevron seemed good for the first couple weeks O.o

What kind of timing are you pulling do you have a snapshot of your tables? I haven't been pulling that much just in the 2-4k RPM region. I guess I'll just ride this tank out and see if my IAM improves over time.

Was that recent pull in a higher gear? There's quite a few more lines of data than the ones in February. I have put the main data into a spreadsheet to compare. Your LTFT are more negative, therefore you're running leaner. Not by much, but it could be enough to push you over a knock threshold. You could also try and make the engine run a little richer between 3000-4500. Here are the charts to compare:

[Celadrielas]

Originally Posted by steve99

Mate i can give you the scaling i did but its on straight petrol not 10% ethanol fuel and without chip thingo, not sure how it will go, but if you want it let me know, managed to get trims to about 5% , but those aem intakes seem turbulant or something a real pain to get low trims on and correct afr.

The AEM intakes are turbulent as all get-up and in addition to that, I have a cut snorkle which isn't helping at all, either. -- I'll take what I can get from you and would be GLAD to look at it, but I'll have to find a way to account for the Ethonol base in the fuel we have here in America.

Honestly, I think the answer is to change the intake I have out completely and go from there

[Phantobe]

Originally Posted by Kodename47

Was that recent pull in a higher gear? There's quite a few more lines of data than the ones in February. I have put the main data into a spreadsheet to compare. Your LTFT are more negative, therefore you're running leaner. Not by much, but it could be enough to push you over a knock threshold. You could also try and make the engine run a little richer between 3000-4500. Here are the charts to compare:

I think the first two pulls were 2nd gear and last one was 3rd gear (in march). After you mentioned the thing about running leaner, I did go back & compare my logs. And I noticed I was running slightly leaner... This would have to be why I'm getting knock, afaik running richer is better esp. on 91.

What would you suggest I do? Pull timing in the 3500 to 4800 region, or try to run slightly richer? I assume that has to do with MAF scaling I haven't delved into that yet.

Also how did you compile the logs like that, is that from the knock correction tool? Thanks for all this great info! Sharing is caring :P

[Phantobe]

So I pulled some timing in the region where I was getting knock, and now I'm still seeing more knock!

Is it possible I just got a shitty fill up? I'm tempted to go back to Shell...

http://datazap.me/u/phantobe/91chevr...=0&data=1-4-14

Its weird, I noticed I was just cruising in 5th and stepped on the gas a little bit around 2200RPM & the ECU is pulling 2.50 degrees of timing. I'm just thinkin it has to be the fuel o.o

[steve99]

Originally Posted by Phantobe

So I pulled some timing in the region where I was getting knock, and now I'm still seeing more knock!

Is it possible I just got a shitty fill up? I'm tempted to go back to Shell...

http://datazap.me/u/phantobe/91chevr...=0&data=1-4-14

Its weird, I noticed I was just cruising in 5th and stepped on the gas a little bit around 2200RPM & the ECU is pulling 2.50 degrees of timing. I'm just thinkin it has to be the fuel o.o

for things to change that much its likley fuel

its also worth logging intake air temp instead of kc learned as large chages in intake air temps can effect knock

[Kodename47]

Originally Posted by Phantobe

So I pulled some timing in the region where I was getting knock, and now I'm still seeing more knock!

Is it possible I just got a shitty fill up? I'm tempted to go back to Shell...

http://datazap.me/u/phantobe/91chevr...=0&data=1-4-14

Its weird, I noticed I was just cruising in 5th and stepped on the gas a little bit around 2200RPM & the ECU is pulling 2.50 degrees of timing. I'm just thinkin it has to be the fuel o.o

Doing that in 5th gear s likely to provoke "knock" just because of the load generated,

[trdric]

So im pretty much new to software tuning, i ran e85oft OTS 2.063. I know from reading you guys that I my MAF is off since I use a greddy intake (takeda)

http://www.datazap.me/u/trdric/log-1...og=0&data=1-14

I know from what I read from @steve99 I was suposed to log to adjust it in 91oct :/

[sav]

Originally Posted by trdric

So im pretty much new to software tuning, i ran e85oft OTS 2.063. I know from reading you guys that I my MAF is off since I use a greddy intake (takeda)

http://www.datazap.me/u/trdric/log-1...og=0&data=1-14

I know from what I read from @steve99 I was suposed to log to adjust it in 91oct :/

Running the same intake - we've scaled two different cars(both running Takedas) with Steve's guidance and the odd thing was that the scaling was different between the two, the MAF sensors on these cars seem to differ quite a bit between them.

Started with the Takeda scaling posted elsewhere and took it from there, it's now at a point where it's pretty much spot on but it took time and a good couple of runs/logs.

[trdric]

ya i tried opening that thing. this is what i got