A Stock M3aC is no slouch. Sporting a 240HP 3.2L inline 6, it sprints from 0-60 mph in 6.7 seconds and through the quarter mile in 14.9 sec at 98 mph, all with no more driver effort required than just mashing on the throttle.
Those of you who have seen our previous cars probably already realize that we didn't settle for that level of performance for long :)
In deciding on a set of modifications, we wanted something which would preserve all the user-friendliness and reliability of the stock car, but would give it a large dollop of additional performance. There are a few top-notch BMW tuners in the US, and of them Dinan is known for its "performance without compromise" philosophy for building very high-performance packages which don't require any sacrifice from the driver. Dinan headquarters also happen to be 10 miles from where we live, so the decision was easy.
Dinan's top-of-the-line S3 signature package includes new shocks, struts, sway bars, camber plates, chassis bracing, a stainless steelcat-back exhaust system...and, for good measure, a 6.5psi Vortech supercharger! Other changes include a higher-performance fuel system, upgraded cooling, and reprogrammed ECU and transmission. To this excess we added a new 3.73 BMW differential gearset to give our car the same gearing as the 5-speed manual M3. The finishing touch was a set of SSR Integrale 18x8" forged aluminum wheels and Michelin Pilot Sport 235/35-18 tires, shaving 2-3 lbs off each corner of the car and improving handling and grip considerably.
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