Install is a bit easier than the VT2-based kits and very straightforward. The G1 supercharger's smaller overall package allows for more clearance for the intake tract and redesigned G1 supercharger bracket can be installed in sections rather than as a complete unit for the DIY type. All other items are shared from the VT2 platforms and install in a similar fashion.
Dynos
Pretty impressed with the kit on the dyno. Our 09 M3 clocks in at 377whp/279tq equipped with a set of Macht Schnell Test pipes & Macht Schnell Stage 2 Intake on ACN91. The G1 Supercharger on the 96.5mm pulley brings those numbers to
548whp/366tq adding
171whp and 87tq to baseline figures. Torque comes in a bit higher early on compared to VT2 kits and carries clean to redline.
Consistency
Consistency is key here, and you can see the numbers are absolutely consistent run after run after run.
Opinion
With the easier installation, the overall finished look appears cleaner when looking underneath the hood. Now with the G1 introduction, ESS has full control over the
entire production process, as Vortech component costs have been aggressively rising lately. Along with the G1 supercharger, a number of other improvements have been implemented such as a redesigned supercharger bracket and improved idler system. A nice touch was including both the 96.5mm (91oct), and 94mm (93oct) pulleys for both 91/93 octane ratings at no additional charge. An improved internal gear system allows for longer service intervals on the G1 unit. A redesigned breather system is also used to prevent fluid seepage from the supercharger unit under high Gs (Vortech users know exactly what I'm referring to here). Chatter is virtually eliminated, others will be hard pressed to even know there's a supercharger living underneath the hood until its too late.
Improvements
- Virtually silent operation
- Both 91oct & 93 octane pulleys included
- Redesigned Heavy-Duty redesigned mounting bracket /idler system
- ~15lb reduction from VT2/Vortech based systems.
- ~10-20ft/lb gain in torque from VT2/Vortech based systems
- Power consistency after
numerous dyno pulls
- Improved supercharger vent system. No more S/C fluid seepage under high Gs
- Direct bolt-in upgrade path in G1+/G2
Power feels clean and great on the road with no surging throughout the gears. Definitely need some more miles logged to fully adapt.
ESS has sold a significant amount of supercharger kits and its good to see development on new products even with the S65 well out of production. Note that the VT2-Vortech based units will still be offered alongside the new G1 kits, with full support/attention eventually moving over to the G1 kits across the product line. Current VT2 users wouldn't benefit much from switching over to the new platform, but those shopping for a new supercharger kit would be generally pleased with the G1 systems perform.
Those in the SoCal area are welcome to drop by our facility and see the kit in person.