Catch Can; Recirculate To Vented = Need A Retune?

[cobrAA]

Do you need a retune after going to vented catch can instead of recirculated ?

thanks

[GTR_JOEY]

i would say no, but if it did make a difference.. it would be sweet FA

[Legendaryl]

+1 for no.

[Dose Pipe Sutututu]

No, just remember to block the pcv

[BlackBox]

How about switching from recirculating BOV to atom?

Just changed my intake plenum and at the same time changed my BOV from hybrid to atom, now when I jump off throttle the revs drop below idle and sometimes stalls.

Tossing up between BOV or vacuum leak.

(Sorry for thread hijack)

[Kane_R32]

How about switching from recirculating BOV to atom?

Just changed my intake plenum and at the same time changed my BOV from hybrid to atom, now when I jump off throttle the revs drop below idle and sometimes stalls.

Tossing up between BOV or vacuum leak.

(Sorry for thread hijack)

Of course it will be some adjustments made, the metered air (via AFM) is now being vented to ATMO and not seen by the engine as the ECU thinks making things go whack...

[BlackBox]

Yeah that was my logic, but it seems to do it more under light/medium throttle than when you jump off heavy throttle..

Either way I'll be getting a leak test done with my tune