2011 STI Stg 1 Datalog Review

[athrin]

I recently just loaded Stg 1 93 Oct v300 to my 2011 STi. The car is using factory intake system. I'm not sure if something's wrong with the car. I drove it for 20 miles after loading the map. It also seems to be running fine and nothing out of the normal. If anything the car is running smoother. If anyone can review my data log I would really appreciate it. There are -1.4 in Feedback Knock at high rpms. Is this something that would go away? Is there anything I can check in my car mechanically? Thanks in advance.

https://docs.google.com/spreadsheet/...tVGw2UEE#gid=0

[snoopy]

There is an updated map v301 on the Cobb site. I would give that map a try. You are over boosting a tad and that might be the cause of the knock. With that said after you try the updated map I would either try the LWG version of it or change the map to the 91 octane map and continue to use the same gas. You are getting knock at high rpm high load which is not good but easily resolved by trying one of the above. Otherwise you are fine but knock under Wot is not good. Either getting rid of the over boost or reducing the timing by running the 91 map should easily resolve the issue.

[athrin]

I just have the following questions that I'm unclear about:
- Will I be able to use the same gas with the LWG version? Or only use the same gas with the 91 octane?
- If I decide to use the 91 octane map would there be a problem using a 93 octane gas? Or would that make the car run safer with some breathing room against quality of gas?

Thanks for the reply.

[athrin]

I went ahead and loaded Stg 1 91 octane v301 using the same 93 octane gas. I don't see values on Feedback Knock anymore. Still not sure if there's anything else wrong but I think it looks better than the initial log. Any advise is greatly appreciated.



S# Mode 1st pull
https://docs.google.com/spreadsheet/...sWElUaWc#gid=0

S Mode 2nd pull
https://docs.google.com/spreadsheet/...HWE1tWlE#gid=0

[snoopy]

By using the 91 map it has less timing so you will less likely see knock like you were initially. I would continue to use the 93 octane gas, it will not cause any harm. By looking at your TD boost error you are still overboosting a tad. However, it is not causing any knock so your car looks fine. Another option is to run the 93 map but the LWG one which should lower your boost. In general the more boost your have the less timing you can run and vice versa.

[athrin]

I appreciate the advise, thanks for the response. This is more for my knowledge but how are you able to tell based on the TD Boost Error that I am over boosting? I did check the notes for the map and the target boost for stage 1 91 octane v301 is 17.5 psi for S# and 14.5 psi for S mode. Based on the Boost column I didn't go over the target boost. I guess if you can explain what the relation between the TD Boost Error column to the Boost column I would have a better understanding when over boosting is occurring. Thanks again.

[hutch959]

yes. negatives show overboosting in the td boost error column. your ecu calculates boost based on other parameters... so just because the boost targets arent being overshot, doesnt mean you are not overboosting.
i would go lwg.... it is a very small change and you wont even notice it. but your motor will if its on the edge of knock with the NWG.

[athrin]

By using the 91 map it has less timing so you will less likely see knock like you were initially. I would continue to use the 93 octane gas, it will not cause any harm. By looking at your TD boost error you are still overboosting a tad. However, it is not causing any knock so your car looks fine. Another option is to run the 93 map but the LWG one which should lower your boost. In general the more boost your have the less timing you can run and vice versa.

how about running 91 map LWG instead of 93 map LWG? If I run 91 map lwg, wouldn't that give me a better reliability?

[hutch959]

maybe... if your 93 map is knocking, then the 91 map would pull timing which would reduce knock.
so if its knocking and you install the 91 and it stops... then yes.
if its still knocking then... kinda.