I've recently purchased a rather loud (ok to be more accurate insanely loud) wrx and although I have a lot of time for the good members of the police force (note I said "good members") I'd rather not be attracting them to me in large numbers (unless they are female and blonde but that's a whole different issue lol).

The exhaust is easy, take it somewhere and actually put some mufflers on it and that takes care of that but it also has an external wastegate of which I've not had any experience with previously so the following question may make no sense at all so bear with me.

Is it possible to plumb the outlet of the wastegate back into the exhaust system and increase the overall size of the piping to allow for the extra gasses or does it have to vent straight to atmosphere? I don't care if it costs me even 50 - 100 hp of overall power seeing as there is plenty more where that came from, I just want it to not draw so much attention.

Thanks.

yes, plumb it back into the exhaust.

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Long live the WRC

we love gate in Yokine

plumb back though for sure is the answer..you want lose much if anything

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Funny looking German Subaru

Plumb back will fix your noise issues.

Check what turbo it is. If the internal gate has been spot welded shut to allow for install of the external gate, you could completely remove the external gate and return to a factory internal gate setup.

If it is some kickass GT35R with only an external gate option... Please post up more specs of the car

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[COLOR="Gray"]550Nm off a 2L... Just wish it was in the dak dak...[/COLOR]

Thanks for that, it's good to know I won't lose too much power putting it through the exhaust.

I've never actually heard an external wastegate in operation but I'm guessing it's bloody loud due to what the dude who I bought it from was saying.

As it is at the moment, even off boost it is offensively loud. I haven't got to use boost yet as there is an exhaust leak somewhere in the up-pipe so combined with that and the crazy rotational anti-lag idling it's running just driving it on the road at the moment is a bit rude to inflict upon other road users.

And yeah the turbo is a Garrett GT3540r with a Tial 44mm wastegate (with screamer) - now I'm guessing that by nature of the name "Screamer" it is designed to be loud so could I lose the "screamer" part to get some quietness back. My intention is to try and keep as much of the power output as possible while making it drive, look and sound as close to a standard 2006 STI as possible. This approach always worked very well with my 2003 WRX, nobody even suspected I was running dual-nitrous injectors and a whole bunch of other mods. Unfortunately with this one, the "almost as wide as the car intercooler" clearly visible from the front kind of gives the game away.

Not sure what other specs you wanted Kato, just the usual stuff most people seem to do to rex's these days (ie. FMIC, bigger injectors, turbo, exhaust etc) although it does have a Motec M800 ECU which is kind of cool. I installed, programmed and tuned my Haltech P2000 ECU on my '03 wrx completely from scratch without a dyno so figure if I'm on a roll why not keep running with it? After all, the engine is supposed to be almost bulletproof so I'm sure a few seconds here and there of running lean while I sort out the fuel map shouldn't bother it. Only one way to find out I suppose

(and sorry for the big post)

Givewai?

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Balls.

Was trying to figure out what you meant and then I stumbled on a 44 page threat titled "Project [GIVE WAI]" and then put 2 and 2 together. I had no idea this car was so well known.

So anyway, yeah GIVE WAI as it was once known as is now my new baby. Yeah I know it's a slight overkill for what will eventually be my daily driver but I wanted a black 2006/2007 STI as a minimum and I also wanted an engine that could handle a 100 - 150 shot of NOS without having to worry about it blowing up. Then by the time I would get the turbo, ecu, fuel system etc etc the cost started to skyrocket. And then I saw GIVE WAI for sale for and figured it's a much smarter way to go about things than spend it all over again. Sure it's more fun doing it yourself but I've been there done that many times over so this time around I'm taking the easy way (wai) out.

I'm looking forward to being able to let this crazy beast stretch its legs as from what I can tell it has spent most of its life in a garage of some form.

Wait, you had a Motec M800 ECU and you took it out and installed a Haltech ECU in its place?

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Avatar courtesy of GTR owners club.

reread, he had a haltech in his 03 wrx. this car is a 06 sti.

only a crazy man would do such a thing!

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Long live the WRC