Ignition Corrections

turbine tuning · Post by **turbine tuning** » Sat Jul 19, 2008 12:40 pm

I read somewhere I can disable all ignition corrections in boost. Where can I find that feature? I don't know whether I should zero the corrections out on the dyno or not because of high iat's and ect's. I think i'm pulling 3 degrees after ect is 210. Let me know, thanks.

Post by **Gaskleppie** » Sat Jul 19, 2008 5:06 pm

first page in parameters....

turbine tuning · Post by **turbine tuning** » Sun Jul 20, 2008 1:50 am

ok i disabled corrections under boost but for some reason my actual ignition logs shown4-5 degrees lower than table readings. why is this?

Bindegal · Post by **Bindegal** » Sun Jul 20, 2008 5:37 am

Your CAL + logfile should reveal whatÂ´s going on. Use the logs, it really is an amazing tool to diagnose these kinds of issues. /Allan

turbine tuning · Post by **turbine tuning** » Sun Jul 20, 2008 10:28 am

haha i did use the logs. that's how i know that there's a difference in table and ignition readings. i just can't figure out why. timing is synced at 16, corrections are disabled under boost. thanks.

Bindegal · Post by **Bindegal** » Sun Jul 20, 2008 1:26 pm

The log should shows which corrections are in effect. If you want help diagnosing this, you need to upload the CAL and logfile. ThatÂ´s really the only way Calvin or someone else knowledgable can help you. Anything else would result in endless guesswork. /Allan

turbine tuning · Post by **turbine tuning** » Sun Jul 20, 2008 1:43 pm

i emailed the cal and log to calvin last week, just waiting for a response. here it is. thanks for the help.

Bindegal · Post by **Bindegal** » Sun Jul 20, 2008 4:42 pm

From what I can tell, eCtune does as it is supposed to do. -IAT is very high = IAT ign. corrections active. -ECT is very high = ECT ign. corrections active. -TPS is constant -1%. Thus the ECU thinks youÂ´re idling. Causing idle ign. corrections to be active because the \"idle\" is obviously high as youÂ´re driving along

If TPS was working and IAT=lower and ECT=lower (like not 101 celcius!) your table ign would match final ign perfectly. ECT/IAT etc. trims are always active, also above 1034 mbar even though you check the \"disable ign corrections above\" box. /Allan

turbine tuning · Post by **turbine tuning** » Sun Jul 20, 2008 5:02 pm

wow thanks a lot for the help. it makes a lot of sense now. do you think i should zero out the corrections for now since it is between 85 and 95 degrees F out here in the summer? my iat's and ect's just won't go down. can i start with lower timing and 0 correction and gradually bring it up while checking plugs? thanks again.

Bindegal · Post by **Bindegal** » Sun Jul 20, 2008 5:34 pm

I would probably just tune the tables and let the ign/iat corrections do their thing at the default settings. /Allan

turbine tuning · Post by **turbine tuning** » Sun Jul 20, 2008 6:09 pm

ok but then in the winter when my iat's and ect's go below correction level my timing will be higher since it's not pulling anything. will i have to just retune then? thanks.

Bindegal · Post by **Bindegal** » Mon Jul 21, 2008 12:16 pm

As I understand it.... With lower IAT and ECT, your knock threshold should be higher, allowing for more timing. And this is also one point for using an intercooler, by the way.

ThatÂ´s the whole point of the compensation tables... They are there for a reason. But hey, ItÂ´s your engine, tune for whatever makes you feel more safe. In my book, timing should never be left on the bleeding edge anyway. The tables are there to ensure you donÂ´t have to tune manually for every conceivable temperature... makes sense? /Allan

turbine tuning · Post by **turbine tuning** » Mon Jul 21, 2008 7:36 pm

i understand, you're absolutely right. i will work on bringing my temps down. i got the tps working today so it's not correcting that anymore. thanks for the help.