Td04 is your standard Wrx turbo

??? Are you sure, as far as I am aware, I thought the EcuTek software was flashable/tunable onto a stock MY00 WRX ECU? My MY00 is tuned by ecutek with a tbe exhaust and upgraded fuel pump, and I was under the impression my ECU was still stock :S

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WRX Club Spec Evo 4

Yep you can get an Ecutek reflash on my99/00 model's MMS do em

Quick question what kind of gains would you be looking at with a full TB exhaust and a tune on say an 03-05 wrx, i was assuming about 15 - 20 kw?

I'm not exactly a pro with car mod improvements etc. but I've read in a few places that a full tbe with tune and fuel pump will add around 35 - 40kw to your car, if done properly by a quality tuner

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WRX Club Spec Evo 4

That's quite a lot!

I got my02 tuned at ASG, all it's got is a 3ich tbe, cai and a wallbro pump got 195 on the dyno, but it drives a lot better so that's what I was after.