high altitude

[eastsidep]

Hello I have an 06 300 srt8 and live in calgary ab canada and at a high sea level 3500ft. I have cai and magnaflow exhaust i was wondering if u think that at this altitude it will have any affect the 93 cai tune? if so is there any suggestions on fine tuning other than $150/hr dyno time? I also from time to time have had the mysterious down shift clunk but not all the time and was wondering what is the conclusion on this issue.

[mikel]

If at altitude, you can try the 93 tune.
Log for KR and if none, you are fine.
Datalogging and a wideband are your best friend to dial in the tune.

Thanks

[eastsidep]

well thank you fine sir .And as for the down shift any more on that?

[mikel]

Oh, sorry.
First suggestion would be to make sure you are on the latest revision, also try resetting the tranny adaptives.

Thanks

[eastsidep]

I am running the 8r20.I did try the reset it was good then i retuned and it seems to come and go i will try another reset .Also i will try the upgrade to 9r02 this is the most current is it not?

Thanks Fred

[mikel]

Yes, 9r02 is current.

[eastsidep]

I was told to do some logging and have done so was told to look for KR was wodering what #S I should be concerned as if I am correct the KNK tol RET was reading 127.00?? i added fuel and have since pulled 2 degres of timing do u have any suggestions

[mikel]

Look at LT_KNK and ST_KNK, along with actual timing cyl. 1.

Thanks

[eastsidep]

I have logged and have seen the ST_KNK numbers creep up starting around 4000 from 1.5 to 5 under hard acceleration also have the gas fattened to 2 4 6 and will add a little more to see if i can remove it im running 94octane with 10% ethanol.any further suggestions as to what i can do but pull timing.