ESS-625 Self-install, DCT GTS Software and TX vs SoCal shops
I know I am late to the party, but here is my supercharger story for those interested =)
I mod my car in steps. I like enjoying every new mod I do and when I get bored again I do yet another mod =)
My modding path was largely track oriented, but I came to a point when NA motor power levels were just not enough… With the usual full list of NA engine mods, I did ‘SAE’ 387 RWHP, 279 torque on EAS dyno, 91 pump gas on EAS dynojet. Attached here (first out of three).
After much debate, I decided to give supercharger a try. Roman @ ESS gave me a good deal. Initially, I opted for VT2 ESS-575, but while my kit was in transit, I promptly called ESS and upgraded to 625 kit. Roman sent me a new pulley and belt.
When I lived in California I was fortunate to be close to EAS, R’s tuning and the rest. It was so great to be part of the huge tuning scene in SoCal. After my recent move to Houston, it amazes me how small tuning scene around here for European cars and so is the amount of tuning shops… I went to see the ALMS race on Circuit of the Americas in Austin a few weekends ago and bought BMW car coral parking tickets. Well, there were like 20 BMW’s maybe all together, only about half of them were M cars, mostly stock. (I am yet to see an M3 in Houston with at least exhaust LOL) I was probably the most ‘modified’ guy out there… =) The track is amazing though!
I installed supercharger myself with a buddy of mine in his garage. I am still building a house here and don’t have my own garage yet. The install is not very complicated. It took us two full days and about 20 hrs of work. We were not trying to set the record and enjoyed the process.
After proper 400 mile break-in, I started driving it like it was meant to. The acceleration is impressive starting at about 5000 RPM quickly turning into ass rape intensity at higher RPMs.. First gear is all wheel spin, so I like to punch it in second or even third. Power delivery is linear, but maybe not quite as linear as NA, largely because of the amount of power.
One thing that annoyed me in the beginning is bypass valve whistle (at least I think it was BPV) cruzing at 3000 RPM. I even tried another valve and messed with the adjustment screw a little. Then I made my peace with the noise, well, strangely enough after about 500 miles the whistle went away. I am still perplexed about what it was. Now I am happy with the noise my engine makes and nothing annoys me any more.!
I also feel like I needed upgraded DCT software. First, I was sick of jerkiness coming to a stop and, second, I definitely feel the need for quicker and firmer shifts at WOT due to power levels. I decided to go with Alex@Alpine motorsports and his GTS software. The software is amazing in combination with the supercharger, when at WOT the shifts are very quick and at the same time smooth. The new software largely cured the issue of 2nd gear jerk when coming to a stop in high gear. I recommend Alex and his services. Great guy and awesome price!!
OK, on to the dyno runs. Houston crowd on M3post recommended me two places where I ended up going. I went to Driver’s Source in Houston first, since they had a dynojet. Someone here local to Houston told me that their dyno reads 10% lower, but I went nevertheless. I was very disappointed by the numbers, I felt like their dyno wasnt worth a crap - SAE 476 RWHP and 318 torque. WTF?! There was no way in hell my car was making this little power. I trust my ass dyno! The guy also showed me the other 2 (two!!) supercharged M3’s they had dynoed in the past… Almost the same numbers..
So, I went to another place – Eurocharged off of I-10. These guys seemed better equipped. The results were much better – 530 RWHP and 350 torque! I think knowledgeable guys like Steve @ EAS would have extracted more power on their dyno. The guy who was doing pulls wasn’t all that confident, I had to tell him to spin the engine to the redline. They all drive AMG’s and are not used to over 8K redline and he kept cutting it off at 7700 or something. LOL
The rest in pictures..
ESS VT2-625 | Akra Evo | KW Clubsport | StopTech ST-60/ST-40 | 18x9.5, 18x10.5 TE37SL | 265,285/35/18 RS-3 | Project Kics R-40 lugs | Macht Schnell Studs | GTS DCT software | Bosch Mini Lightweight Battery | Schroth Mini 4-Point Harness (track) | Pagid Yellow RS-19 (track pads) | Solo laptimer (track) |Verstrabe DCT Shift Paddles | OEM Performance Steering Wheel, Rear Spoiler, Mirror Caps, Grills | IND Hood Vents| ModeCarbon GTS V1 Lip
Last edited by thorny; 10-11-2013 at 10:25 PM.