up pipe is what connects the turbo to the exhaust manifol(turbo sit ontop of it), if you have an catted up pipe then its a perfect time to replace it

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Marti


Car: C Red S13 Silvia 2.3l 400+rwhp-SOLD
Daily ae82 4age corolla (light mods)-Sold
Daily:SWB GQ Patrol
Will be a 03-04 STI next