Tuning for LT headers?

[nonnieselman]

Im tryin to figure out what changes need to be made with the addition of LT headers.
My buddy just put Pacesetter LTs and ORY on his 99 TA LS1/60E.

Ive been playing with the tune a lil until now.

Kinda dont know what to do now.
From common sense, the headers allow more exhaust flow.. how does that affect incoming air?

Thanks guys.
We are goin to the track tonight to see what she will do

[charcold-bowtie]

seems to me anyway, the biggest thing is to check the ve, or the ltft's

[nonnieselman]

Well the car ran a 6.9@76 to my 6.8@80 both of us had 1.9 60's at the local 500' Track..
His trans is gone and the converter clutch is fried.. Time to pull it all back out..:(