First post other than my intro, lurked and searched for a while now. I'm coming from the Mazda DISI in my Speed3. I've seen much of the research done by the Mazda guys posted in the forum, the Mazda community really has their mod path down to a science mainly because the engine has been in production for so long. I am trying to get a quick feel for the 3.5 Ecoboost so I know what direction to head.
Quick rundown of where the DISI 2.0 is. We essentially do not have fueling issues on the stock turbo. You are able to max out the turbo with nothing more than CAI, HPFP internals, remove the secondary cat and an E85 tune. We can't run over 50/50 mix E85/87 without risk of what we call black sticky death, though there are some work arounds. No need on the stock turbo as 50/50 is more than enough to tap it out. After a larger turbo you will run out of fuel "50/50" around 400whp, then we use aux systems much like what is talked about for the ecoboost.
From what I gather the Ecoboost falls short on fuel pressure quickly when running E85 and it seems most opt for meth injection, though I hear the 2013+ is better. From what I understand its actually the two LPFP's that are the weakness. I was unable to determine if the HPFP falls victim to the same black sticky death that we have on the Mazda when running more than a 50/50 mix. I do see some people running 15-20% E85 mixes, but not a lot of tuning involved, seems the ECU can adjust and people are getting some impressive gains with a few gallons and nothing eles. E85 being prevalent in my area I would prefer to run an E85 mix over meth injection, but if I can't get the same performance without having to upgrade the LPFP I think it would be easier and more cost effective to use meth. Any input on this would be appreciated.
Last question, and this dead horse has been beaten over and over, Livernois vs someone with SCT. Seems to be absolutely no doubt Livernois is the leader. The only thing that sets me back is that their tuner does not log. Seems fine if you have a predefined upgrade path, but anything outside of the usual upgrade paths will require dyno tuning "meth or E85" and if I understand correctly only Livernois can do this with their tuner. If you go SCT you can log and monitor as well as utilize tuners all over the country, or yourself if you know what you are doing "not me". On the filp side of that I have a Bluetooth OBD2 reader and the torque app, it doesn't have the resolution of the SCT but I could at least sleep sound at night being able to check KR and fuel pressure. Thoughts?
Thanks to anyone that took the time to read all this crap
Scott
