tss Posted November 7, 2012 Report Share Posted November 7, 2012 Forgive me if this is a repeat question, but what is our factory Boost PSI? For some reason I thought it was 10 PSI. Is that correct? Quote Link to comment Share on other sites More sharing options...
Crash712us Posted November 7, 2012 Report Share Posted November 7, 2012 i thought it was the 9-12psi range. Quote Link to comment Share on other sites More sharing options...
tss Posted November 7, 2012 Author Report Share Posted November 7, 2012 I was asking because I just read that LMS 4 adds 2.5-3 PSI (posted by Rick a few years back on a now dead forum before the 4+ tune). So, I was kind of trying to figure out the base line and see, percentage wise, how much the boost increases. I understand Ford's rationale re: limited wear on engines, but still find it hard to believe our engines have so much untapped potential released with our tunes! Man I love my "post-tuned" Ecoboost...... Quote Link to comment Share on other sites More sharing options...
Crash712us Posted November 7, 2012 Report Share Posted November 7, 2012 Thats about right then Tss. The 4+ tune peaks out at about 14-15psi. Oh and your right there is much untapped potential, and yet there is even more power yet to be unleashed. I have heard from a few different sources from inside fords that worked on developing this engine have seen it produce nearly 750hp. Quote Link to comment Share on other sites More sharing options...
bpd1151 Posted November 7, 2012 Report Share Posted November 7, 2012 I recently learned (while on my tour of the Chicago Assembly Plant) that the reason why FORD detuned these EcoBoost engines SO MUCH, was entirely due to insurance industry regulations and/or pressures from same. Apparently, FMC would've had an incredible uphill battle trying to market the Taurus SHO as a true family sedan if it allegedly exceeded 400HP. I heard specifically that the original intentions of the SHO trim level was to produce / market them at around 415 crank hp. The current, 365 crank hp rating was a "compromise" between FMC and the regulator's of various major insurance bureau's. I also confirmed that these EcoBoost motors, as currently designed, handled just over 700 crank hp, before "issues" began popping up as it relates to drivetrain, etc. So yes TSS, Crash712us is correct and accurate in his reply post to you. Quote Link to comment Share on other sites More sharing options...
larrylu Posted November 7, 2012 Report Share Posted November 7, 2012 I heard specifically that the original intentions of the SHO trim level was to produce / market them at around 415 crank hp. The current, 365 crank hp rating was a "compromise" between FMC and the regulator's of various major insurance bureau's. I also confirmed that these EcoBoost motors, as currently designed, handled just over 700 crank hp, before "issues" began popping up Interesting stuff. Any one know if there has ever been a consensus as to what crank HP the 4+ tune is developing? I think I remember Hennessy was touting their package at something like 430 HP. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Paulford8 Posted November 7, 2012 Report Share Posted November 7, 2012 WOW! So no wonder we keep holding our breath wondering if we have reached the limit and nothing happens. Larry I have have seen dyno numbers normally around 330/360 give or take with stage 4. That would put you a little over 400 crank with just the tune. Quote Link to comment Share on other sites More sharing options...
tss Posted November 7, 2012 Author Report Share Posted November 7, 2012 Good information. So it sounds like perhaps boost is increased 30 percent or so, sound right? Also, Rick told me that he questions whether the 10~12 MKS really has 10 less horsepower, as they have not been able to find any differences at all between the 2. And they are both rated the same for torque. And the 2013 MKS is actually rated now the same as the SHO for stock horsepower. He thought maybe Ford folks wanted to SHO to be rated top dog performance wise, and the Lincoln folks really didn't care so much about that. Quote Link to comment Share on other sites More sharing options...
steve142857 Posted November 7, 2012 Report Share Posted November 7, 2012 WOW! So no wonder we keep holding our breath wondering if we have reached the limit and nothing happens. Larry I have have seen dyno numbers normally around 330/360 give or take with stage 4. That would put you a little over 400 crank with just the tune. I think when I dynoed my car last year, stock was 287 at the wheels and then it was about 10hp added per stage. So if I remember well 319hp was stage 4... If we calculate a driveteain loss of 21.4% (287 hp vs stated 365), that would give 405 hp at crank. But one strenght of LMS tuning is the area under power curve is greater (not just a peak). I am actually going tomorrow with the same guy who dynoed it last year to compare eith same dyno. He uses a dyno that is plugged instead of the wheels... Apparently quite accurate but it seemed at that time to read under LMS dyno... What matters to me is to measure the additional power compare to last year... I will report back for sure Quote Link to comment Share on other sites More sharing options...
Crash712us Posted November 8, 2012 Report Share Posted November 8, 2012 That sound about right looked at BDP's dyno chart, stock number was 277HP. And my dyno run with stage 4+ meth SCT tune was 350hp, stage 5 meth mycal tune 403hp. Not to shabby 126hp over stock. Quote Link to comment Share on other sites More sharing options...
steve142857 Posted November 8, 2012 Report Share Posted November 8, 2012 That sound about right looked at BDP's dyno chart' date=' stock number was 277HP. And my dyno run with stage 4+ meth SCT tune was 350hp, stage 5 meth mycal tune 403hp. Not to shabby 126hp over stock.[/quote'] Chris, you are better with numbers than grammar ! lol! I am looking forward to my apointment tomorrow... I may have to change my 500hp... if numbers are under, I'll leave it as is, but if over, I will have to boost the numbers! lol! But no worries, I won't put SHO550R, you guys put me back on the right track... : ) So, the magic number, considering a drivetrain loss of 21.4%, would be 393hp at the wheels. My hope is to be 404hp or more, just to be ahead of Chris' numbers hahaha! We shall see! Quote Link to comment Share on other sites More sharing options...
Crash712us Posted November 8, 2012 Report Share Posted November 8, 2012 Lol! We totally forgot we where going to put SHO550R on the side Darrell's car for LMS's customer appreciation day. Just for you, lol! Quote Link to comment Share on other sites More sharing options...
steve142857 Posted November 8, 2012 Report Share Posted November 8, 2012 Lol! We totally forgot we where going to put SHO550R on the side Darrell's car for LMS's customer appreciation day. Just for you' date=' lol![/quote'] Hahaha! That would have made me laugh a lot! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.