[ultimateendz]

New to the whole V4 thing here fellas, swapping the v4 and jb3 back and forth seeing whats best on these EPL turbo units of mine. I was wondering if anyone was feeling the same way I do about autotune. Its great for daily driving around when im not on the dragstrip or feel like driving aggressively and also keeps the engine somewhat safe. But outside of that when i want Max boost i find it somewhat hindering...my logs seemed fine without autotune on but autotune on would tune my normal 16-17psi down to 14-15.5 almost all the time...its on 93 pump from shell. I will post some logs after lunch today to show you what i mean.

[Alan l.]

I noticed the same thing. With autotune on my boost usually lowers from its initial set target during the summer heat since i'm still on my stock fmic and dp's.

Now i have both my map 1 and 2 set exactly the same with the only difference being one is with autotune on and the other map with it off for the times where I want to have MAX power available.

[Jeff@TopGearSolutions]

Change the aggression level if you feel its too conservative for your setup. Just be aware of the risks.

I'm getting aggression levels of .2 (not 2) at 17 PSI Max with this cold weather. Welcome to Meth.

You have to remember autotune default settings are not set for MAX power, its set for a happy medium for daily driving. It's also set up for every customer vishnu has, around the world, it needs to be conservative and be able to cover a broad range of people in different elevations,weather, ETC

The settings can be adjusted for a reason....

[ultimateendz]

this log is with autotune OFF

[ultimateendz]

one more with it off

[cn555ic]

Dude you need to have Matt install the meth on your car already!

[ultimateendz]

Originally Posted by cn555ic

Dude you need to have Matt install the meth on your car already!

lol....i gotta get these settings working right first...

[DefactoM6]

Just set autotune on, no point in messing about with it if you're about to put meth in.

[cn555ic]

Originally Posted by ultimateendz

lol....i gotta get these settings working right first...

YOu should PM JPsimon as he should be very familiar with the settings with upgraded turbos...PM him privately

[scottp999]

What are your settings with auto-tune on? How much boost do you expect out of 93 octane without having timing events? What are all your mods, for those of us that don't know?

16-17 PSI with 93 octane only, looks the same to the motor whether you have upgraded turbos or not. You could set autotune to max PSI of around 15-16 for 93 octance only. Raise it to 17-18 with meth. I personally think that anything about about 17.5 you should be using meth and race gas. I set my max psi to 17 with 93 octane and meth.

[edo]

My autotune tunes boost to 17PSI on pump gas (stock turbos). I'm really happy with it.

[Irishace]

Originally Posted by ultimateendz

lol....i gotta get these settings working right first...

I would not waste your time, with meth your results will be dramatically different and its where you really should focus your energy. You really should be running meth with upgraded turbos, you desperately need the octane.

[enrita]

Originally Posted by DefactoM6

Just set autotune on, no point in messing about with it if you're about to put meth in.

plus 1000 , let autotune be on.
i have now UT45 and max boost 16 on map 1 with IC 50% . This is plenty of power for 93 octane.

Run that map for many WOTs . log and see where you are at with the autotune settings. you can than get them much closer for quicker adaptation/autotuning when you switch maps.
And yes hit JpSimon since he has the same turbos.

[ultimateendz]

Originally Posted by cn555ic

YOu should PM JPsimon as he should be very familiar with the settings with upgraded turbos...PM him privately

o i do...all the time....just wondering what other people ere doing thats all...ill try setting my aggression to 3 from 2 and see what happens.

Originally Posted by Irishace

I would not waste your time, with meth your results will be dramatically different and its where you really should focus your energy. You really should be running meth with upgraded turbos, you desperately need the octane.

true... i know im doing snow performance but thats all i really know...i just fund the car and watch...and then drive it like i stole it....

[ultimateendz]

Originally Posted by enrita

plus 1000 , let autotune be on.
i have now UT45 and max boost 16 on map 1 with IC 50% . This is plenty of power for 93 octane.

Run that map for many WOTs . log and see where you are at with the autotune settings. you can than get them much closer for quicker adaptation/autotuning when you switch maps.
And yes hit JpSimon since he has the same turbos.

im gonna turn it on for my ride back to work and post the logs...

[scottp999]

Originally Posted by Irishace

\You really should be running meth with upgraded turbos, you desperately need the octane.

Agree. It really does not matter if you have upgraded turbos or not. Upgrading the turbos helps make boost easier with less strain on the turbos. A PSI is a PSI to the engine whether you have upgraded turbos or not.

There is plenty of anecdotal evidence about where the limits of boost are before you are going into a high risk area for the engine internals without the proper octane levels to avoid knock or detonation.

Keep on logging and get some meth flowing before running >16PSI (my two cents).

[Irishace]

Originally Posted by scottp999

Upgrading the turbos helps make boost easier with less strain on the turbos. A PSI is a PSI to the engine whether you have upgraded turbos or not.

There is plenty of anecdotal evidence about where the limits of boost are before you are going into a high risk area for the engine internals without the proper octane levels to avoid knock or detonation.

Keep on logging and get some meth flowing before running >16PSI (my two cents).

+1000

[ultimateendz]

Originally Posted by JPSlick

Change the aggression level if you feel its too conservative for your setup. Just be aware of the risks.

I'm getting aggression levels of .2 (not 2) at 17 PSI Max with this cold weather. Welcome to Meth.

You have to remember autotune default settings are not set for MAX power, its set for a happy medium for daily driving. It's also set up for every customer vishnu has, around the world, it needs to be conservative and be able to cover a broad range of people in different elevations,weather, ETC

The settings can be adjusted for a reason....

seems changing the aggression level from 2 to 3 did the job for me...now im sustaining the boost i want...here is a log with autotune ON

[ultimateendz]

one more

[OpenFlash]

Changing the aggression targets will effectively make the tune run more or less boost. The question should be why you need to increase aggression target to run more boost. If the default aggression target results in a boost level of 15+psi in other cars and only 12psi in your car, why is that the case? What is making your car knock more frequently than others? That's the question that need to be answered and addressed before you start running more boost.

[scottp999]

Also, when you dyno'd you implied you were on 93 octane only and with autotune on the car went to 18.2 PSI (post from October 2nd). Why now will it just go to 14-15.5? Did someone add race gas while you were not looking?

Something does not add up, not saying you are not stating the facts, just the behavior seems strange.

From the post on your dyno day:

Originally Posted by ultimateendz

i let the V4 decide what was safe to use...what i used on the dyno to get that is the same setting im using as my daily...autotune will increase or decrease as it sees fit....16 was the highest the car was willing to go on pump pre turbo...now it was 18.2, either way its an imporvement...and as far as peak numbers go...dynojet i dont care about...these are uncorrected mustang numbers...i wanna see a stock turbo car hit close to that at 18.2 psi, then u have a case, which im sure you wont

http://www.e90post.com/forums/showth...=437799&page=2

BTW - 15.5 PSI on 93 octane sounds safe to me. I also don't like your logs when you bumped up the aggression level.

[ultimateendz]

Originally Posted by scottp999

Also, when you dyno'd you implied you were on 93 octane only and with autotune on the car went to 18.2 PSI (post from October 2nd). Why now will it just go to 14-15.5?

Something does not add up, not saying you are not stating the facts, just the behavior seems strange.

From the post on your dyno day:



http://www.e90post.com/forums/showth...=437799&page=2

i think you miss interpreted it...when i said it was on 18.2 psi...autotune as definitely off....it wouldnt go beyond 16.5 with it on