Want to swap exhaust manifold out for sti v7 with a VF30 turbo on BP Legacy GT

[Decap]

I've basically got a horrible hack job on the exhaust system for my Legacy GT Wagon (BP 2003) that I bought last year and I'm finally at the point where I'm going to replace it from turbo to tip - most likely with a full 3" custom setup because I can't find any decent turbo to tip systems that don't cost stupid amounts of money and I can't find any full 3" systems.

 

While I'm at it, I've decided I miss my top end boost and my WRX rumble. For some reason even though my TD04 is the 19T variant, it won't hold more than 12PSI boost at top end and I've seen a pretty sweet deal on a set of V7 STi headers + up pipe + VF30 turbo to go with that. 

 

Firstly, will the headers bolt straight onto the EJ20X/EJ20Y engine?

 

Secondly, will the turbo be clear of other parts in the engine bay? 

 

Lastly, aside from already having an AVO TMIC, is there anything else that I need to think of for this conversion?

[GC8E2DD]

Hrm, how will you attach the compressor housing to the intercooler? On those Legacies the compressor outlet points up and bolts directly to the intercooler. On a V7 (or anything up to V10 AFAIK) the compressor outlet points at the passenger side and attaches via Y pipe to the intercooler.

 

Having gone the other way myself, to twin scroll, I'm going to guess you'll need different water and oil lines?

[Andy_Mac]

Is it the larger AVO one with the silicone hose inlet or the stock size one that bolts directly to the comp?

 

That 19t should be able to hold 15-16psi near the top end. Leave the stock TS headers in place with the turbo and get a decent turboback setup made and a tune. Won’t have the rumble but will go well and be a hell of a lot cheaper and easier than swapping to a single scroll UEL header setup.