1999 Saab 9-5 LPT manual
I'm sure this has been covered before but I decided to moddify my 1999 Saab 9-5 lpt. First step was to swap my stock t25 turbo to the Aero TDO4 15t turbo. Stock with a boost gauge I'd see only 4-5 psi. After only swapping turbo I see 16 psi wot. I've replaced boost vaccum lines, boost controller. The car runs smoothly but it's obvious I need a Tune I'd say. Any input is much appreciated because I'm no mechanic and I don't want to hurt my engine.