I have a quick question, I have a turbonetics turbo kit. I have a waste gate, and a blow off valve. The bov is a turbonetics raptor, I want a different sound outta it I'm wondering if I switch bov's do I need a re tune. I have heard a few different opinions, but I'm taken it here. There was no leak in this bov during tune. Here is a list of my engine mods


Fully built short block (All installation/tuning done at Ballistic Motorsport and Holy Roller Dyno in Bow, NH)
Weisco Pistons 96.5 over
Eagle X beam connecting rods
Cosworth head gaskets
ACL race bearings
550 Detusche Werkes injectors
NGK Iridium plugs
Pathfinder rear cooling mod
New OEM Nissan gasket kit
Ballistic Motorsport Secondary Injection
Turbonetics Turbo kit
TurboSmart 45mm Wastegate
Open Dump
Skunk 2 Plenum Spacer
Greddy Tic titanium exhaust (I also have a JIC Magic)
DEFI gauges (amber in color Boost, EGT)
AEM wideband
J&S Safeguard
NRG catch can
Greddy E-Manage Ultimate ECU
Greddy Profec B Spec II Boost contoller
Greddy Turbo Timer
Turbonetics reflash (rev limiter and governor

 

No as all blow off valves basically do the same thing and its just the sound that changes.

 

No re-tune required, google blow off valve and see what it does.

 

Thanks guys I know what a blow off valve does, I have googled it, but in my searches I was coming up with a lot of mixed info. Some were from Subie and Evo forums but they were changing factory bovs to aftermarket, but I was still puzzled. I have a waste gate and the bov just the bov like I said doesn't make the noise I want.

 

I think Tial makes one of the best BOV..

 

So which BOV are you looking to get?

 

Im not positive I was going to see if there was any way to hear how it would sound, or do I just have to youtube it.

 

Evo guys use re circ valves and when they switch to Blow off valves often the car stumbles a bit. Its because the Mass air meter has seen the air come in and fuel has been added for the incoming air is sees and when you release that air to atmosphere the fuel still goes in so in is a little rich for a moment often causing a stumble after shifting gears. If you already have a blow off valve you are fine to swap to a different one.