Well i know nothing past built trans and upgraded turbo, but for my system on my lmm, it helped out a little. Doesnt starve fuel as much as it could i guess. Forthw amount of work ur doing to it, cant hurt!
I didnt bother to do mine until i did 40s and upgraded my turbo, so i was never able to tell if there was any pressure gains, retention, etc from it or not. But if your down to the level of doing them.. why not?
Yeah, I just don't want to waste time and money on something I don't need. Then again, I didn't NEED twins, built trans, or badass tunes, it's just fun and addicting lol. Maybe I will try and run with the stock for now and monitor FRP and then switch to them later and see if it makes a difference or not. The only problem there though would be having to jerk new twin parts out to get in there to do it later vs doing it now.