3 Bar sensor

[DJE624]

I assume there is no reason / benefit to install my 3 bar until LMS has their XV1 tune ready right ? I mean there's no benefit with out the new tune so why bother asking them to tweak my current stage 3 or 4 tune just to run it for no reason in the mean time ?

I would just wait until I had the tune.

[68_GT]

I would just wait until I had the tune.

that's what I thoght just wondered becasue I see others putting them in now. Maybe they have different tuners that are already benefitting from installing their 3 bar MAP's ??

[EcoBrick Bob]

Some of it is just hype!  "I gots me a 3 bar sensor installed and the extra boost is crazy good:... LOL 

I was actually the first to run one from what I understand.  Then Darreli got one, even though Livernois didn't think he needed it ( back in late 2010 - early 2011).  The problem with allowing the stock turbos to produce higher boost levels is the FRP.  If you combine the 3 bar with Meth injection which in effect adds fuel, you have less fueling issues.  Hopefully the new tune being developed will somehow get around that issue, but  it may be fueling issues that are delaying the new tune's availability.  Livernois doesn't want to sell something that may cause issues.  They wouldn't give me their methanol tunes without having my system dyno'd in house... and  I felt that was a very reasonable decision on their part. In fact it only came up because Rick knew I was spraying, when I asked for their 4+ to go with the other 2 bar tunes I had earlier purchased.

[68_GT]

I always talk to Anthony with LMS about my LMS tunes and I beleive he told me they have been runing the XV1 on ecoboost vehicles in house and it only required the 3 bar MAP and a thermostat to run that tune due to it carrying the higher boost closer to the shift point or rev limiter. It made sense to me. Sounded like they may have it ready to release to everyone by the end of the year I'm excited about it I can definately feel the power fall off after 5k rpms after the boost bleeds off.

[EcoBrick Bob]

My boost didn't bleed off with Torrie's custom tuning.  In fact that's probably why my FRP dropped as low as it did at high RPM in 2nd gear. That's also where my boost peaked.

[68_GT]

FRP ?

[DJE624]

FRP ?

Fuel Rail Pressure.

[68_GT]

Fuel rail pressure oh wow....

was that the stock fuel system running out of fuel after a WOT run then ??

[DJE624]

4Dr is much more qualified to get into the nuts and bolts of fueling than I.  Check for his write-ups.  Basically it boils down to more boost=more fuel needed.  Especially at higher RPMs.

[Josephm]

More boost= More air= More fuel being demanded and our engines run the leanest at the TOP of 2nd thus the reason Mr. Bob said earlier explaining how he leaned out in the top of 2nd.

[FoMoCoSHO]

4Dr is much more qualified to get into the nuts and bolts of fueling than I.  Check for his write-ups.  Basically it boils down to more boost=more fuel needed.  Especially at higher RPMs.

2013's seem to have higher FRP.

LPFP runs 10 PSI higher.

More info in the consolidated fueling thread

[BiGMaC]

FMCS... Do you have a gauge ion the car or is it on a tuner.  If it's a gauge where did you get it? This could be useful.

[68_GT]

4Dr is much more qualified to get into the nuts and bolts of fueling than I.  Check for his write-ups.  Basically it boils down to more boost=more fuel needed.  Especially at higher RPMs.

I understand hence my prior question hopefuly it's not an issue with the 13's as I'm anxiously awaiting the Xv1 tune but I wont do it if I have to worry about a high rpm lean condition under high boost !!!!!!!!!!!!!! yikes !!!!!

maybe part of LMS's delay in releasing the tune to everyone.

[DJE624]

I understand hence my prior question hopefuly it's not an issue with the 13's as I'm anxiously awaiting the Xv1 tune but I wont do it if I have to worry about a high rpm lean condition under high boost !!!!!!!!!!!!!! yikes !!!!!

maybe part of LMS's delay in releasing the tune to everyone.

Could be. 

[BiGMaC]

I want to go LMS for the tune....  But this issue needs to be solved. Even if the FRP is higher on the 2013 3.5s as some have reported, I'd worry about burning up the engine if the throttle cut out from the ECU was disabled.