The car:
2007 E90, full weight with a 15" subwoofer in the trunk. 105k miles!
6MT, Spec SMFW, BMW 550i clutch
BMS DCI
CP-e charge pipe with Tial BOV
VRSF 7" FMIC
1 step colder plugs
Riss Racing downpipes
Corsa exhaust
Fuel-it Stage 2 LPFP
Fuel-it Protoype Supplemental Fueling System (stage 1)
Vargas Stage 2+ Turbos (19t/unclipped)
E60 fuel
First, Tony was awesome to deal with. I ordered some stage 2's back long before they would be ready, and I knew this. Tony kept in contact with me and when the delays came, he with no questions asked if I wanted a refund. He was courteous, no BS, and extremely knowledgeable on the turbo side of things. My background is most recently as a test engineer working on turbine engines; Tony clearly knows his stuff. I will say that I had no issue with the delays as I ordered turbos before mine were completely dead. When the 2+'s were offered as an upgrade, I couldn't say no. Since I like ripping around and am not super concerned with 1/4 mile or trap speed, we decided on 19t compressor and unclipped turbines. If I were to do it again I might go clipped, because spool on these things is fantastic.
Second, in full disclosure, I've been working as part of the Fuel-it! team for upwards of a year on the engineering side of things. The car has the Fuel-it! prototype supplemental fueling system on it. I'm sure you guys are going to have some questions on this, as you should. I'm going to be light on details, but on E60 and a solid HPFP (which has over 40k miles on it) we were able to run up to 25 psi while targetting upper 11's A/F ratio. An actual sample from in-tank measured at E62.
As far as the tune goes, I went to my standby, Bren of Brentuning. He's been involved in tuning N54's since 2008 (DIMSPort open source back then). He really does have a ton of experience and he's been my go-to since my Subaru days. I told him I wanted something that was fast, fun, but kept in mind my car has over 100k miles on it, and I do like thrashing the car somewhat severely. Using a Cobb V3 and some wizardry, he ended up giving me a map that's running 25 psi tapering down to 16-17 at redline. Timing ramps to 13.5 degrees. The DME is not blind to the boost, but it is tricked -DME won't read above 22.5 psi (although I have one unicorn log that it read 22.6). As far as power output goes, I don't have the holy grail of N54 dynos (dynojet), I use Virtual Dyno. I will say, that I use the same stretch of track, with the same start point, and the same weight for the car (and even endeavor to have the tank within 1/4 tank each time). I did do a 60-130 using Steve's VBOX and with very little idea of what I'm doing (i.e. no FFS, no tailwinds/max acceptable downslope) ran 8.96s. I am 300 lbs. On a stock timing/boost target map, but running all of my mods, I put down 302/292. On my best FBO stock turbo E50 map I was 407/450. My most recent map revision on the VTT 2+'s is 500/555. Anyway, looks like I'm at about 500 whp with lots of torque. When Tony sends the upgraded turbo inlets, we're revisit this and see if we can open up a little more on the top end. I'm sure Bren could have gotten more out of them on a more aggressive map, but that was not my goal. Of course I want it all, but it's gotta be sane and handle daily driving thrashing. Log (I added "actual boost" based on testing):
http://www.datazap.me/u/scgt/bretuni...solo=3&mark=75
Overall I'm very happy with the results. The car sounds and feels awesome, it's very fast, and it's very responsive -I'm nomally pretty sensitive to turbo lag and really don't like the feel of the average big-turbo car. These spool super quick, so much so that were I to do it again I'd really consider going clipped. The few people that I've had ride with me have normally commented on how different the engine sounds (Bren's VANOS magic) and then that's usually followed by "holy s&%$!" I love it.
The next progression of things will be to add inlets, then change to 100% E85 and see where we're at.
Thanks!
Chris
2007 E90, full weight with a 15" subwoofer in the trunk. 105k miles!
6MT, Spec SMFW, BMW 550i clutch
BMS DCI
CP-e charge pipe with Tial BOV
VRSF 7" FMIC
1 step colder plugs
Riss Racing downpipes
Corsa exhaust
Fuel-it Stage 2 LPFP
Fuel-it Protoype Supplemental Fueling System (stage 1)
Vargas Stage 2+ Turbos (19t/unclipped)
E60 fuel
First, Tony was awesome to deal with. I ordered some stage 2's back long before they would be ready, and I knew this. Tony kept in contact with me and when the delays came, he with no questions asked if I wanted a refund. He was courteous, no BS, and extremely knowledgeable on the turbo side of things. My background is most recently as a test engineer working on turbine engines; Tony clearly knows his stuff. I will say that I had no issue with the delays as I ordered turbos before mine were completely dead. When the 2+'s were offered as an upgrade, I couldn't say no. Since I like ripping around and am not super concerned with 1/4 mile or trap speed, we decided on 19t compressor and unclipped turbines. If I were to do it again I might go clipped, because spool on these things is fantastic.
Second, in full disclosure, I've been working as part of the Fuel-it! team for upwards of a year on the engineering side of things. The car has the Fuel-it! prototype supplemental fueling system on it. I'm sure you guys are going to have some questions on this, as you should. I'm going to be light on details, but on E60 and a solid HPFP (which has over 40k miles on it) we were able to run up to 25 psi while targetting upper 11's A/F ratio. An actual sample from in-tank measured at E62.
As far as the tune goes, I went to my standby, Bren of Brentuning. He's been involved in tuning N54's since 2008 (DIMSPort open source back then). He really does have a ton of experience and he's been my go-to since my Subaru days. I told him I wanted something that was fast, fun, but kept in mind my car has over 100k miles on it, and I do like thrashing the car somewhat severely. Using a Cobb V3 and some wizardry, he ended up giving me a map that's running 25 psi tapering down to 16-17 at redline. Timing ramps to 13.5 degrees. The DME is not blind to the boost, but it is tricked -DME won't read above 22.5 psi (although I have one unicorn log that it read 22.6). As far as power output goes, I don't have the holy grail of N54 dynos (dynojet), I use Virtual Dyno. I will say, that I use the same stretch of track, with the same start point, and the same weight for the car (and even endeavor to have the tank within 1/4 tank each time). I did do a 60-130 using Steve's VBOX and with very little idea of what I'm doing (i.e. no FFS, no tailwinds/max acceptable downslope) ran 8.96s. I am 300 lbs. On a stock timing/boost target map, but running all of my mods, I put down 302/292. On my best FBO stock turbo E50 map I was 407/450. My most recent map revision on the VTT 2+'s is 500/555. Anyway, looks like I'm at about 500 whp with lots of torque. When Tony sends the upgraded turbo inlets, we're revisit this and see if we can open up a little more on the top end. I'm sure Bren could have gotten more out of them on a more aggressive map, but that was not my goal. Of course I want it all, but it's gotta be sane and handle daily driving thrashing. Log (I added "actual boost" based on testing):
http://www.datazap.me/u/scgt/bretuni...solo=3&mark=75
Overall I'm very happy with the results. The car sounds and feels awesome, it's very fast, and it's very responsive -I'm nomally pretty sensitive to turbo lag and really don't like the feel of the average big-turbo car. These spool super quick, so much so that were I to do it again I'd really consider going clipped. The few people that I've had ride with me have normally commented on how different the engine sounds (Bren's VANOS magic) and then that's usually followed by "holy s&%$!" I love it.
The next progression of things will be to add inlets, then change to 100% E85 and see where we're at.
Thanks!
Chris