09 srt 2nd and 3rd log

[muskegoil]

2 nd log 6%,12%,15%

3rd log 6%,14%,17%

[Cruisin1966]

What canned tune did you start with, and what grade of fuel are you using? You still need more fuel by the looks of things. Based on these logs I'd try 10%, 18%, 20%

[muskegoil]

I'm using 91 cai tune with shell 91gas.Thats quite a a lot of fuel i have to add.Did you ever see somebody with more.

[Cruisin1966]

Yup. Seen it where you add 20%, read the tune from the Predator, write it back as a custom tune and then add a little more fuel. Sometimes if the gas isn't so great (won't get into a debate over it), you may have to drop a degree or two of timing in the troublesome areas instead of adding so much fuel.

[muskegoil]

ok thanks my new log with 10,18,20 still has st knk,what do you think,,

[Cruisin1966]

Well, since I don't want to get into "re-loading" the canned tune, why don't we try retarding the timing 2º in each of the following areas, 4000-4800 and 5000-7000. Keep the fuel just where it is, and log it again.

[muskegoil]

Thanks cruisin i will try that when i get back from fortmac if there isn't any snow on the ground.I just stored it for now.If i pull 2% timing will i not lose hp.I know i'm running to rich now tail pipe is black,,

[DGatzby1]

Thanks cruisin i will try that when i get back from fortmac if there isn't any snow on the ground.I just stored it for now.If i pull 2% timing will i not lose hp.I know i'm running to rich now tail pipe is black,,

Get a catch can and make sure your intake is clean (no oil in the bottom) before you try to tune that thing when you start again. Sounds like you have PLENTY of gas. The canned tunes can't be that far off. Also make sure you have plenty of octane in the gas you are running.