so i have a dynoflahs, ams mbc, ultimate racing turbo back with hi flo cat. For some reason I'm lagging after I shift. I do shift fast and what it does is after I shift it goes back to 13-14 and works its way up back to 20 slowly. The characteristics of my boost is 21 at peak, 20 till 5.5k, and 18.5-19 at around redline+ Anyone know what it could be? I tightened EVERYTHING twice.

 

Was your car flashed for all those mods?

ib4movetodynoflashforum

 

yea it was. funny thing is it didn't do this till the dynoflash. al says its the bc but i dont' know and neither does he. Thats why i'm trying this area

 

Sounds like a leak somewere. It could be within the BOV or Wastegate and thus checking hoses for a leak will not show you a defective BOV/MBC/Wastegate. Sounds like you will be playing the replace everypart until its fixed game. Sorry bro.

Let us know what it is when you have figured it out.