1998 LS integra keeps dying out

Hey guys, so I recently changed my stock headers in my 98 LS integra to Airmass headers. Everything seems fine but 2 days later my car died out. It starts up, theres no bog or sputter. While driving it randomly dies out. The cars getting spark because I recently changed the cap/rotor along with spark plugs. Any ideas what the problem may be? Also pressure coming out the exhaust is low. Please help, thank you.

check the main relay had that happen to me