Knock with Stage 4+, SP534, and tstat

[91hybrid]

Have the same issue:

http://www.ecoboostperformanceforum.com/index.php/topic,3202.0.html

Even with 102 octane the computer was still pulling timing.

Put in my NGK 7's this weekend porcelain looked good, white very little color if any at all, still pulling 4.5 deg on a reduced timing tune.  May be issues with oil consumption.  I changed my oil this weekend as well so we will see what she does after her first oil change.  Still don't have my meth kit in yet...

[BiGMaC]

My understanding is that the most compensation the ECU can make is pulling 7.5 degrees of timing... Then it will throw a light.

[staged_sho]

I agree that some logging or other investigation is needed.  I wonder if it would still knock if you put in a 91 octane tune or even returned to stock.  There could be something going on that is unrelated to the tune.

Prior to plugs and tstat I switched to the 91 octane 4+ tune for a little while and still got knock regardless where I filled up with 93.  I went back to the stock tune for months till this past weekend and never heard any knock doing the same tests, and that was without the plugs and tstat.

[SHOdded]

As suggested above, may want to go ahead and upgrade your 4X to allow for 3 bar MAP sensor.  The 4X is the "ultimate" LMS packaged tune for the 2010-12 SHO, but I believe it requires the MyCal device.

[staged_sho]

I'm already waiting for the 4x for my MyCal....I have the 3 bar MAP sensor sitting around somewhere.  I've been looking into logging applications, FORScan looks good as ShoBoat mentioned, but preferably something for my Nexus 7 or S3.  I recall reading that there will be an Android version coming out.  I do have laptops to spare.

[ecoboostsho]

I'm already waiting for the 4x for my MyCal....I have the 3 bar MAP sensor sitting around somewhere.  I've been looking into logging applications, FORScan looks good as ShoBoat mentioned, but preferably something for my Nexus 7 or S3.  I recall reading that there will be an Android version coming out.  I do have laptops to spare.

You'll want to download an app called "Torque" (or you could use DashCommand).  Get the PRO version as its only like $5 and then check out the thread we have going in the "Datalogging" section of the forum.  Forscan is nice because it is free and it is very fast so it's good for datalogging that you want to review out of the car later...I prefer Torque for everyday use to know what is going on with the car at a quick glance.

[ShoBoat]

I'm already waiting for the 4x for my MyCal....I have the 3 bar MAP sensor sitting around somewhere.  I've been looking into logging applications, FORScan looks good as ShoBoat mentioned, but preferably something for my Nexus 7 or S3.  I recall reading that there will be an Android version coming out.  I do have laptops to spare.

You'll want to download an app called "Torque" (or you could use DashCommand).  Get the PRO version as its only like $5 and then check out the thread we have going in the "Datalogging" section of the forum.  Forscan is nice because it is free and it is very fast so it's good for datalogging that you want to review out of the car later...I prefer Torque for everyday use to know what is going on with the car at a quick glance.

I personally use it all the time (Torque Pro on a galaxy s3) here is a screen shot. The min max values are really helpful.



With the additional PIDs it makes it a great tool.


Sent from my iPhone using Tapatalk

[staged_sho]

Thank you!