I'm proud to say that my beast recently joined the big leagues with the addition of a new ESS VT1-560 Supercharger Kit! I'll continually update this thread with new developments and additions but I did want to provide some feedback for those looking to purchase the kit, as well as provide feedback that I haven't necessarily seen yet.
I've had the kit for 300 miles now, breaking in the new LUK clutch and SC at the same time. Before dyno was taken the day of the install. After dyno will resume on Wednesday morning, 9AM PST. Another E39 M5 owner, with no other mods besides the SC dynoed 470whp there, so with my additions I'm hoping for close to 500whp. That will be TBD
on Wednesday. Wish me luck
Butt dyno suggest heavy addition of power throughout the powerband. The "wifey" test concluded that the car felt lighter, and that she feels like her neck is going to break with each acceleration and shift. Actual WHP will be verified on Wednesday at 9AM PST. I haven't been able to push the car through the gears (yet) due to the clutch break-in period, but normal acceleration is improved, and moderate acceleration shows improvement. Basically, feels like the car shed 2000lbs of weight. More to come later this week.
As you can see from some of the photos, fitment is OEM quality. For those who haven't seen an E39 M5 engine bay, they've told me that it looks completely stock. I've even had some comments such as "what did you add? I don't see anything..." Very tasteful beastly addition to the bay, although, I wish there was a plate of some sort to block the emptiness of the driver-side, where the intake box used to be. I might explore this as a future project.
Interior Engine Sound:
Little to no change. You hear the slightest whistle at all RPM levels from idle to redline, however, you have to really look for it. With the windows up and radio on moderate level, the SC is completely silent. Not sure if I like this or not
. The stock BOV is set up to recycle back into the system as opposed to releasing into the atmosphere, so it is almost nonexistent in terms of sound also.
Exterior Engine Sound:
I have Supersprint Headers, Magnaflow Resonators, and Muffler Delete, and after SC install, the exhaust tone remains the same. Did not get any louder, did not get any deeper, aka no change. This came as a surprise to me, but it was also verified by the shop through several dB tests to confirm our ears weren't just getting old. Outside, you can hear the SC much better. Moreso, with the engine bay open.
Car idles exactly like stock. No change in idle in both cold start-up and warm start-up conditions.
Additional Options with Tune:
It is not recommended to up the rev limiter according to ESS, so if you've had this option in the past do not think you'll have this again with the new ESS SC tune. Sport memory is an option, and must be requested at purchase. I learned this the hard way, but Roman and the team helped through email and it is now resolved.
Too early to tell, but it seems as though under normal driving conditions the gas mileage remains marginally the same. In the 300 miles I've put on the car thus far, let's just say I didn't see any dramatic decrease in MPG or miles per tank for that matter. More to come long term.
No change in the daily driving behaviors with the SC installed. There is definitely more pep to your step driving between gears and as mentioned earlier, the car does feel "lighter." But in terms of stop and go traffic and such, all behaviors remain the same as pre-supercharger.
As recommended by those who came before me, I've replaced all necessary cooling, fuel, oils, etc. in association with the install, partly because I am at 103k miles but mostly for preventative measures. Small parts list included: engine/diff/tranny oils, fuel pump, water pump + thermostat, coolant, fuel filter, CPS, clutch, spark plugs...
That's all I can think of at the moment. I'll continue to post my feedback as I go but I think this is a good start. Feel free and ask questions you may have and I can help answer them best I can.