Loosing spark?

[1fast05]

I recently installed cams and got a tune from bbr, and it's running like ass! I data logged it on a 4th gear pull and it looks like the spark and spark source are dropping out as I mash on the gas, I'm gonna and post a pic of the data log, It back fires and pops badly under acceleration and deceleration

At idle it runs great, revs great but under a load it feels like 5 or more of the cop's just turn off, when I data logged it the rpm goes up but the spark and spark source just drop to the bottom of the scale, the fp duty cycle stays about 35%

Built motor with 2.4 KB 13# of boost,sct BA2800,60# injectors,127550 cams, BBK tb, stealth fuel pump on stock hat with bap

 

[stkjock]

What is loosing spark? Is that when the plugs escape and run around the engine bay?

Other mods?

First guess, tune

 

[fdjizm]

Hear any pinging?

 

[BruceH]

At idle it runs great, revs great but under a load it feels like 5 or more of the cop's just turn off, when I data logged it the rpm goes up but the spark and spark source just drop to the bottom of the scale, the fp duty cycle stays about 35%

Spark is usually commanded to go down during wot then come back up. Spark source is a code that tells you what is controling the spark.

 

[1fast05]

No pinging, The plugs looked decent, I can rev it in the drive way and the maf count maxes out at 550 and the fp duty cycle hits .750

I'm gonna give them all the data tomorrow, just trying to get some info on what I'm looking at to try and figure it out myself

And why is it not throwing any codes? It's almost not drivable , Anything past part throttle is horrible!