The AVO Turbo Kit was an option given to me by my Subaru dealership service advisor. It came up duing a routine service visit. Matter of fact the installation was done thru the dealership, who contracted the installation to a well know performance shop. The installation details in this Member Journal is the reinstallation to correct things that I was never happy with. You know the old saying, "if you want something done right, do it yourself!" 
At that time the Forester, Subaru in general, was new to me. I know a bit more now. More on this on the first page of this Member Journal, so no need to repeat it here. :wink:
The naturally aspirated engine has a higher compression ratio than one designed for a turbo, so the boost has to be kept low to prevent destroying it. The AVO Turbo Kit turbo (Garrett turbo) is very small, designed for low boost pressure with little or no lag, spooling up almost instantly.
Pushing the boost above 5-6 psi would shorten the life of the engine, so it isn't worth the samll amount of power gain you'd get.
Going with the AVO Tubo Kit resolves many problems, as in desiging & fabricating parts to fit. I still had to do some minor fabrication, but nothing we couldn't do in our garage.
The Forester with the AVO Turbo Kit is very peppy & a blast to drive. I'm going to say it's faster than a stock XT off the line. The power keeps coming where nonturbo owners have their foot to the floor wishing for a bit more power. :biggrin:
As I wrote here AVO Turbo Kit - Part 1 - Why you shouldn't do this!... note the title! You'll end up with the power of stock Forester XT... perhaps a wee bit more...
I've moved on to an '07 FSXT to continue my power MODding adventure. My son loves the '03 XT & it's still in perfect operating condition! :smile:
Bobby...
The Table of Contents for Alex's Member Journal can be found :icon_arrow: here. (post #2)
At that time the Forester, Subaru in general, was new to me. I know a bit more now. More on this on the first page of this Member Journal, so no need to repeat it here. :wink:
The naturally aspirated engine has a higher compression ratio than one designed for a turbo, so the boost has to be kept low to prevent destroying it. The AVO Turbo Kit turbo (Garrett turbo) is very small, designed for low boost pressure with little or no lag, spooling up almost instantly.
Pushing the boost above 5-6 psi would shorten the life of the engine, so it isn't worth the samll amount of power gain you'd get.
Going with the AVO Tubo Kit resolves many problems, as in desiging & fabricating parts to fit. I still had to do some minor fabrication, but nothing we couldn't do in our garage.
The Forester with the AVO Turbo Kit is very peppy & a blast to drive. I'm going to say it's faster than a stock XT off the line. The power keeps coming where nonturbo owners have their foot to the floor wishing for a bit more power. :biggrin:
As I wrote here AVO Turbo Kit - Part 1 - Why you shouldn't do this!... note the title! You'll end up with the power of stock Forester XT... perhaps a wee bit more...
I've moved on to an '07 FSXT to continue my power MODding adventure. My son loves the '03 XT & it's still in perfect operating condition! :smile:
Bobby...
The Table of Contents for Alex's Member Journal can be found :icon_arrow: here. (post #2)