Has anyone upgraded to a TD05 G20 turbo for a wrx? If so what did you think are you happy?

What modifications do you have?

 

That will most likely be too large of a turbo for you to effectively use unless you have a decent amount of supporting modifications. Plus turbo lag will be much more pronounced compared to stock.

 

BTW, do you have the 2.0 or 2.5 WRX?

 

You may want to also check out http://www.forums.nasioc.com/forums for more info.

I have 3in turbo back exhaust, cold air intake, light weight crank pulley.

 

I have a 2.0 and would get the computer re-tuned, get a bigger top mount intercooler, plus would probably need injectors maybe even a fuel pump.

I have a 20G on my 2.0 wrx. It doesn't make full boost until 3800-4000 rpm, but when it spools it makes good power. I ran a 12.7 @ 110 with it bogging and spinning the tires bad. I think it can run high 11's.

 

You need at least 750-800cc injectors, a 255 walbro fuel pump, tgv delete for clearance, a bigger intercooler, catless up-pipe and tuning in addition to the parts you have now.