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  1. NG900 & OG9-3 Performance, Mods & Tuning
    Hey guys I have a 2001 Saab 9-3 t7 150 hp engine and I beleive that due to a lack of back pressure my turbo is gaining to much psi some times over 20 psi and thus after accelerating hard, immediately cutting me down to base boost 8 psi. I have a bar stage 3 tune 3" downpipe and 2.5 inch cat back...
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