blackbird345

I installed a TTi street kit and now I want to start tuning, but I'm having difficulty as it starts to detonate as soon as i get in to boost. Is there any way for me to simply reducing timing down to like 12 degrees across the board? ANd would there be a problem doing this?

soundengineer

iTrader: (16)

shouldnt be an issue....

if you are using HPTuners or EFI you can use teh bidirectional contols to comand a flat 12* or to just remove a specific amount of timing...

I use HP Tuners... its all in the VCM controls under the spark tab

zrater

if you put the spark to what you want in vcm controls does this stay this way
or does it default back to the other tables in the program.. just to
make a couple of runs then check things and then when close vcm controls
it defaults back to ohter tables

jimmyblue

iTrader: (11)

You would want to use the controls to find the sweet
spot and then push those changes back onto the
HO (and track LO to them as well, pulled back more)
and update the flash.

You could use the IAT spark adders to deal with the
boost-driven spark but the CylAir axis in the timing
table ought to give you most of what you need -
supposing you had a decent idea of MAP and a not-
pegged MAF, neither of these being a given with a
boosted stock sensor setup. When the sensors get
left behind, you get short fuel and long spark.

With the logging tools you should have no problem
relating ping to the MAP, MAF freq/flow, CylAir, RPM
conditions and doing something more surgical than a
flat timing reduction across the board.