mandingo

first post on here so here goes, ive got a 2004 wrx sti,
was gonna put a dump valve on it, but not sure now weather to put an induction kit on it instead?
just some thaughts of peoples experiences with either of um would be a help,
i like the sound dump valves make, but would an induction kit sound better?

its my first scooby so im not an expert on these cars, im just having a mid life crisis at 37yrs old and had to buy one, no regrets at all yet.......

DEATHLYREAPER

you can fit both! but the originals dv and airbox with uprated panel filte work better perf wise

mandingo

its got standard dv and k&n pannel filter on it at moment

DEATHLYREAPER

they will work best but if you like the sound fit them

BrownPantsRacing

iTrader: (6)

If you put an induction kit on you WILL need a remap. Stick with the panel filter, the Ecu should ne able to adjust the fueling enough for this. Uprated panel filters will be good up to 400bhp.

Also, I don't think anyone on here would recommend a vent to air dump valve. The standard recirculating dump valve is very Good. The dump valve position in the subaru system means a vent to air will screw up your mixture, could lead to bore wash and engine damage. Stick with the standard one. But if you want a noisy vent to air then personally I would get the car mapped with it on to correct the fueling problems.

P.s. I have an hks ssqv mapped on my car. Love it personally!

mandingo

ok, thanks for reply

mandingo

think i'll leave it standard dv and kn filter, its got a non resonant centre section and prodrive backbox fitted when i baught it, ive just purchased a scorpion decat pipe, shud be here weds or thurs this week, will this make it sound a bit louder/more bhp?

BrownPantsRacing

iTrader: (6)

Will be louder if you fit that but will also throw the check engine light on and require a remap after fitting unfortunately!

DEATHLYREAPER

best to get a plan of where you wanna take it get the bits and map once as can get very expensive to fit one and map tweak every time as trust me you will want more lol

mandingo

did not think it would throw check light on, just thaught it was a swop over job no mapping?

BrownPantsRacing

iTrader: (6)

Good advise!

BrownPantsRacing

iTrader: (6)

Will make exhaust flow much better if you fit a decat and will have to adjust fuel and air in to compensate for more exhaust out. Simples!

Remap definitely recommended.

mandingo

ok, advise noted, will leave decat off for now

DEATHLYREAPER

CONTACT RACE DYNAMIX FOR MAPPING

jay666c

Hi mate i got a 02 Sti put a full decat, simota panel filter, uprated fuel pump, with remap got 330+ bhp my mapper reckons and car sounds mint can hear the standard dump valve and not too OTT
By the way Mandingo heard you got a c**t of a tool! lol

mandingo

lmfao @ jay,

does a dump valve require mapping also?

BrownPantsRacing

iTrader: (6)

See above. Ideally yes if vent to air.

mandingo

thanks for help peeps

BrownPantsRacing

iTrader: (6)

There is a lot of info on this site already that may help you. Use the search function above and see what's comes up!