Re: even with 5 psi my car seems like its lagging?
 

even the AFC is better than the FMU. But i wouldnt recommend it.

Re: even with 5 psi my car seems like its lagging?
 

i would change the clutch first b4 guessing on the "lagging issue"

Re: even with 5 psi my car seems like its lagging?
 

im thinkin when boost hits, the clutch starts slippin. if its running rich at 5psi, try 7... compensate a lil more air. fmu's suck dick over all. i used one at first jus cuz i wanted to finish. i thought it was all fast cuz it was turbo'd then i got my ecu and injectors in and realized 7psi on an fmu aint ---- haha... even 7psi on a proper tune feels way better then 7 on an fmu... do something about it.