Look. For torque, spool time, earlier RPM, the stock BorgWarner has the TurboTechnics beat all day. ALL day. My e30 tune from Dizzy with USD stage 2 parts had over 300 lb-ft (per AP) but it sure as hell felt like it and the spool and ommpf was certainly prior to 3k RPM and pulled harder than the S280 from then to about 5K give or take but is the S280 faster and better overall? Yes. But from low RPM (to me, 4k RPM under), the stock BorgWarner just dominates. Perhaps for perspective, a stock 392 Scatpak couldn't shake me in street speeds with my e30 tune on the stock turbo. I was literally on his bumper and if he braked, I would've hit him closeness. S280 is decent, don't get me wrong, but unless it's a etune on it, the FiST isn't going to see over 300 lb-ft on the stock fuel system.