What needs tuned for longtube headers? Procharged 2011 mustang

[[email protected]]

I just finished installing bbk longtube headers and high flow catted x pipe on my procharged mustang.
What adjustments are usually made when going to longtube headers for making power? Im not concerned about DTCs right now, there arent any yet, and I can change those later if they arise.

Im guessing recalibrate my mass airflow tables to start, but is that it? I might also play with my cams now that i can hear the idle and adjust overlap and idle for a big cam sound. I feel like i made a couple pounds more boost with the shorties and stock h pipe, so i definitely need to get to tuning it.

[engineermike]

Exhaust doesn’t affect maf calibration. Transport delay might be a tiny bit different but this is debatable.

Maybe turn off faosc.

[Thatwhite5.0]

You may have lost a couple of psi with less exhaust restriction but you didn't lose power. You can adjust evc and get a little more spark advance with longtubes.

[junits15]

You may have lost a couple of psi with less exhaust restriction but you didn't lose power. You can adjust evc and get a little more spark advance with longtubes.

Not to hijack this thread too much but would you be willing to give a bit more detail on what you'd change about the EVC schedule? Or just more bluntly how you'd tune this? Still learning and looking to understand more about longtubes.

[[email protected]]

I think what i was feeling was the fueling being off, which was why I thought maybe calibrate airflow to clean up fuel trims. My boost gauge shows 8 psi still but I need to get the oxygen sensors setup properly for fuel and spark to be happy again. I didn't think about FAOSC, high flow cats are probably making the aft sensor read rich, adjust, then throw off the primary sensor making it not was to settle at idle.
definitely starting with transport delay and FAOSC.

What kind of EVC changes? extend the closing time for scavenging, and for optimum power only?

You may have lost a couple of psi with less exhaust restriction but you didn't lose power. You can adjust evc and get a little more spark advance with longtubes.

[engineermike]

I would think you could make evc later to help with scavenging, but careful how moving it affects spark timing.

[junits15]

Thanks mike!