1BadBrd

Well i got pretty decent learnig the datamaster and tunercat on my LT4 hot cam but after returning fromt the army i put in a big cam in and now i need to learn what to look for again.

I have datamaster logs but need help what to look for. I know certain things to look at but i for get the range the numbers are suppose to be and better yet where to change them in tuner cat.

I have certain questions about what i'm seeing.

If anyone can look at me logs and make suggestion, so i can learn again.

At idle i see open loop looks very weird. I'm seeing certain numbers to be low but need help remembering what they need to be.

Doc99SS

There is a thread now titled "How do I learn to tune". In that thread is a link to an article, read that article, this will get you started.
Basically, you tune for three functions: 1) idle, 2) cruising around & drivibilty, and 3) WOT.
With your new big cam, start thinking about tuning the PCM for a smooth idle. What minimum RPM does the cam like? What timing advance?

1BadBrd

Thank You