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Max boost running a TD06 20G on a '03 WRX?
I've recently started upgrading my '03 WRX
- I've swapped out the exhaust with a full aftermarket one (4-to-1 headers, uppipe, 3' downpipe/midpipe/muffler)
- Upgraded my fuel pump to a Walbro 255 LPH
- Upgraded to Perrin fuel rails
- stock OEM internals
- no piggy back ECU (I do my own flashing)
I have a 02-06 STI TMIC, STI 565cc injectors and a TD06 20G turbo on the way
I've been running 15psi of boost for a while now with 18psi being my limit
Anything higher would shorten the life of the turbo and change my air density considerably
With the above mentioned, I'd like to know the max boost I can run without blowing my engine or having to upgrade to Forged Pistons & Rods
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