Is the Livernois tune as good as people say?

[BiGMaC]

Thanks, BiGMaC.  I do not want to hijack this thread around terminology, but your description sounds like what I have always thought of as pre-ignition - the ignition of the fuel/air mixture occurring too soon and slamming into the piston on it's way up.  This is often due to overly advanced timing and/or plugs in too hot a heat range.  Anyway, regardless of terminology, we know it is bad and, thankfully, the best tuners help us avoid it!   

Right on Bro!   Wish we could get one "language" ... maybe knock?  Anyway we do all know we don't want it!

[DJE624]

I don't like that the LMS XV1 tune has been put off either for a long time, or possibly forever with out meth. I'd buy support mods if needed to run it. I just want to run boost to redline my SHO leaves me wanting on the highway after 5k rpms. Maybe that will change with the release of larger direct injection fuel injectors possibly this year and some other fuel deliver modifications. Seems like there's just not enough demand for our cars to justify the additional time to work on our tuning. 

You may want to check on a 3 bar tune.  That's next in store for me.  I thought that the latest tunes for 13-14's were equivalent to the Stage 4+.  4+ will hold the boost out longer. Our turbos are controlled by torque demand.  If you are boosting over 14.5 the ECU can't read it and holds steady.  With a 3 Bar sensor, your ECU can read boosts above 14.5 and supply more fuel.  That may get you where you want to go.

[68_GT]

I don't like that the LMS XV1 tune has been put off either for a long time, or possibly forever with out meth. I'd buy support mods if needed to run it. I just want to run boost to redline my SHO leaves me wanting on the highway after 5k rpms. Maybe that will change with the release of larger direct injection fuel injectors possibly this year and some other fuel deliver modifications. Seems like there's just not enough demand for our cars to justify the additional time to work on our tuning. 

You may want to check on a 3 bar tune.  That's next in store for me.  I thought that the latest tunes for 13-14's were equivalent to the Stage 4+.  4+ will hold the boost out longer. Our turbos are controlled by torque demand.  If you are boosting over 14.5 the ECU can't read it and holds steady.  With a 3 Bar sensor, your ECU can read boosts above 14.5 and supply more fuel.  That may get you where you want to go.

my understanding is that is what the XV1 was supposed to do.

[SRT82ECOBOOST]

I could be absolutely wrong on this, but it was my understanding that the 3 bar really does nothing for you as we do not push high enough boost levels without meth to supplement fuel delivery. If I am wrong and I am leaving something on the table for performance, I will order the 3 bar immediately.

[DJE624]

Depending on what tune you are running, I believe the stock turbos will run up to 17 psi.  Anything above 14.5 will not be read by the 2 Bar.  Run Torque and see if you are pushing that limit with your tune.  If so, it may be worth trying the 3 Bar. 

[68_GT]

who and how is anyone runing above 14.5 PSI ? meth ?

I don't understand why there are claims the 13 fuel system is more capable, but also unable to tune the 13 for higher rpms and higher boost with out meth ?

[BiGMaC]

I could be absolutely wrong on this, but it was my understanding that the 3 bar really does nothing for you as we do not push high enough boost levels without meth to supplement fuel delivery. If I am wrong and I am leaving something on the table for performance, I will order the 3 bar immediately.

As I understand it.... LMS tunes can be modified to increase the boost.  The 2bar sensor can't read (send) info above 14.5psi boost to the ECM... so when more torque is asked for and boost levels reach 14.5 the ECM holds it steady.  With a 3BAR and an adjusted tune the benefit of providing 15-17 psi boost can be translated into performance because the 3BAR can read it and send info to the ECM.  So you don't necessarily need meth to benefit from a 3BAR... This per Dan at LMS (their tuner) in a discussion with DJE that he related.

I am strongly considering trying this... at $130 or so it's a relatively cheap mod that may make my smile even bigger.
Testing on stock turbos give me the idea that they aren't capable of more than about 17psi. Others can chime in here.

So you need a modified tune also (this is posted in in the Livernois vendor area I think)

[SHOdded]

If you are looking to increase boost using the 3bar, make sure you keep an eye on all those pipes & clamps if they are stock!

[BiGMaC]

If you are looking to increase boost using the 3bar, make sure you keep an eye on all those pipes & clamps if they are stock!

Great Point.... 
BTW, I have a set of thermal coated PPE Hotpipes ordered.

[yowen]

If you are looking to increase boost using the 3bar, make sure you keep an eye on all those pipes & clamps if they are stock!

Definitely, It may be worth a guide on here on clamps that should be checked from time to time. Although I assume it's somewhat obvious once you peak into the engine bay.

[68_GT]

I understood differently that 3 bar MAP with LMS was only for the XV1 they were working on and the current stage 3 or 4 whatever 93 tunes are maxed out already ? If not why wouldn't they be ?

I never heard them say anything about get a 3bar MAP and we can turn up your boost / power with your stage 3 or 4 tunes ??

[BiGMaC]

I never heard them say anything about get a 3bar MAP and we can turn up your boost / power with your stage 3 or 4 tunes ??

They didn't Dave (DJE) has been modifying his tune working with Dan at LMS.  His tune is highly modified from their canned versions. Service after sale! 

[68_GT]

Anthony told me this in an email response today..... I assume that means they will add more boost, but he didn't specifically say that I'm waitign on a response to clarify if they add boost with a 3 bar MAP in.

The 3 bar map sensor allows for greater tuning capabilities due to the vehicle being able to recognize boost higher than 14.5 psi.  It is also a requirement for running methanol injection or upgraded turbos. 

[bigmoneycloser]

I have a new tune from LMS for my XSport to utilize my 3bar map. They are not adding more boost. Just re-writing the tunes to incorporate the 3bar.  It allows the computer to monitor the higher boost levels. But they are not turning up the boost. This is how Anthony explained it to me. But anytime you want to return to stock, you have to swap the 2bar back in place.....

[BiGMaC]

Interesting.  I'd love to hear your impressions and see what boosts you get from it.