People knock the IS350, but they are pretty quick. Looks like one with a intake and exhaust went 13.0x @ 105 on Hooiser R6s. Not too bad at all.
E46 M3 | SMGII | OEM CSL 19s | D/A Race Software | OEM CSL Header | Dixis TI | Streamline Drop in filter | (sold)
E92 335is | DCT | JB4 G5 ISO | BB Flash | BMS DCI | BMS CP | BMS OCC | BMS O-Tstat | ETS 5" | Walbro GSL392 | 436/479 Dynojet