Settings for V2 low end torque (like 1.47)?

yahtzee · 01-04-2008, 10:17 AM

I miss the low end burst of speed with 1.47....I certainly appreciate the overall power that V2 provides, I just dont use the top end that much. Im a quick vs. fast kinda guy...what settings can I tweak with to get it closer to that?

sflgator · 01-04-2008, 10:24 AM

Are you running 93 octane? If so, what are your TQ Curve settings across the board?

I'm running at 94% TQ Curve settings across the board (14.7-15psi max) and with the newer v2.0.2 maps (12-19-07 or later), you'll see much improved low-end TQ.

yahtzee · 01-04-2008, 10:26 AM

Quote:

Originally Posted by sflgator

Are you running 93 octane? If so, what are your TQ Curve settings across the board?

I'm running at 94% TQ Curve settings across the board (14.7-15psi max) and with the newer v2.0.2 maps (12-19-07 or later), you'll see much improved low-end TQ.

I believe it is currently 91 octane but am about to fill up with Premium shell. Currently at 62 miles at 90%.

sflgator · 01-04-2008, 10:29 AM

Quote:

Originally Posted by yahtzee

I believe it is currently 91 octane but am about to fill up with Premium shell. Currently at 62 miles at 90%.

Do you know which v2.0.2 map you have loaded up?

If it's the 12-19-07 or later v2.0.2 map, then you should datalog a couple runs (refer to Shiv's instructions on the Vishnu PROcede Forum), and try bumping up the TQ Curve values (if running 93 octane) by 1-2% to see if you're running between 14.5-15.0psi max @ 5,500rpm. With 93 octane, many of us have ended up ~ 94% across the board.

yahtzee · 01-04-2008, 10:32 AM

Quote:

Originally Posted by sflgator

Do you know which v2.0.2 map you have loaded up?

If it's the 12-19-07 or later v2.0.2 map, then you should datalog a couple runs (refer to Shiv's instructions on the Vishnu PROcede Forum), and try bumping up the TQ Curve values (if running 93 octane) by 1-2% to see if you're running between 14.5-15.0psi max @ 5,500rpm. With 93 octane, many of us have ended up ~ 94% across the board.

I have the latest map.......I ran this most recent data log at 90%.

How long should I run at each uptick in % once I set it?

sflgator · 01-04-2008, 10:39 AM

Quote:

Originally Posted by yahtzee

I have the latest map.......I ran this most recent data log at 90%.

How long should I run at each uptick in % once I set it?

Try datalogging a couple runs when you increase the TQ Curve settings across thew board by 1-2%, until you see your max boost at 14.5-15psi @ 5,500rpm. Make sure you datalog your runs @ WOT to redline in at least 2 & 3rd gears...then check your datalogs to see the max boost @ 5,500rpm and up to redline.

yahtzee · 01-04-2008, 10:42 AM

Quote:

Originally Posted by sflgator

Try datalogging a couple runs when you increase the TQ Curve settings across thew board by 1-2%, until you see your max boost at 14.5-15psi @ 5,500rpm. Make sure you datalog your runs @ WOT to redline in at least 2 & 3rd gears...then check your datalogs to see the max boost @ 5,500rpm and up to redline.

WOT - Wide Open Throttle?

Once I do a run at 92% and check it, I can immediately bump it up to 94% if it needs it?

sflgator · 01-04-2008, 11:26 AM

Quote:

Originally Posted by yahtzee

WOT - Wide Open Throttle?

Once I do a run at 92% and check it, I can immediately bump it up to 94% if it needs it?

Exactly; good luck and enjoy!

NPDAN · 01-04-2008, 11:28 AM

Quote:

Originally Posted by sflgator

Are you running 93 octane? If so, what are your TQ Curve settings across the board?

I'm running at 94% TQ Curve settings across the board (14.7-15psi max) and with the newer v2.0.2 maps (12-19-07 or later), you'll see much improved low-end TQ.

Agree 100%..... I run full 100 octane and have my setting at 96% across the board. It definatley has the tq of the 1.47 in the low end now...

slubu · 01-04-2008, 12:32 PM

What if you are on 91 oct, are you out of luck?

sflgator · 01-04-2008, 12:38 PM

Quote:

Originally Posted by slubu

What if you are on 91 oct, are you out of luck?

Shiv said it's all about running 14.5-15psi max @ 5,500rpm, so if you're seeing that boost level @ 90% TQ Curve values when running 91 octane, then yes, you should leave it as is. I'm sure Shiv will be tweaking some things for v2.0.3 though.

rambino · 01-04-2008, 01:13 PM

I run 94.7 octane here in germany...

Think its safe to run 96% across the board. why not dip into 100% down low?

Also when i do my data logging. What is the max PSI that should be safe for my car to run.. 15?

OpenFlash · 01-04-2008, 01:19 PM

You're not seeing 14.1psi at 90%. You're cursor is on the boost spike that occurs when you lift off the throttle. Your real boost pressure is a bit less (don't know exact because there is no boost reading on the way Y-axis in the graph you posted up). Also, you'll notice that that boost dip in the midrange has absolutely no effect on engine torque (as seen by the smooth, constant slope in the RPM graph). The dip is caused by a valve phase change. Boost drops but engine torque doesn't. If we attempted to shove in more boost to keep the boost curve flat, you'd get a torque bump in the midrange.

shiv

yahtzee · 01-04-2008, 03:08 PM

Quote:

Originally Posted by shiv@vishnu

You're not seeing 14.1psi at 90%. You're cursor is on the boost spike that occurs when you lift off the throttle. Your real boost pressure is a bit less (don't know exact because there is no boost reading on the way Y-axis in the graph you posted up). Also, you'll notice that that boost dip in the midrange has absolutely no effect on engine torque (as seen by the smooth, constant slope in the RPM graph). The dip is caused by a valve phase change. Boost drops but engine torque doesn't. If we attempted to shove in more boost to keep the boost curve flat, you'd get a torque bump in the midrange.

shiv

So what is the proper way to take and post a boost log so that I can get (and provide) an accurate reading? Is there no way to tell what PSI i had in this most recent reading?

yahtzee · 01-04-2008, 10:25 PM

Quote:

Originally Posted by shiv@vishnu

You're not seeing 14.1psi at 90%. You're cursor is on the boost spike that occurs when you lift off the throttle. Your real boost pressure is a bit less (don't know exact because there is no boost reading on the way Y-axis in the graph you posted up). Also, you'll notice that that boost dip in the midrange has absolutely no effect on engine torque (as seen by the smooth, constant slope in the RPM graph). The dip is caused by a valve phase change. Boost drops but engine torque doesn't. If we attempted to shove in more boost to keep the boost curve flat, you'd get a torque bump in the midrange.

shiv

Here is another data log that was taken on my way home this evening after bumping up to 94%. What does this one say vs. the earlier one? I notice my peak boost is at 5122rpm and measure 14.6psi.....suggestions?

yahtzee · 01-05-2008, 02:06 PM

I'd really appreciate some feedback..Not understanding why my psi isnt climbing....I made a couple more runs this morning. Here are those two data logs..13.8 and 14.4psi....

I then filled up with Shell 93 (I only had ~20 miles left on reserve 91 octane) and drove approx 15 miles before running this last data log...13.8psi

01-04-2008, 10:17 AM	#1
yahtzee El Capitan 138 Rep 699 Posts Drives: fast Join Date: Sep 2007 Location: Virginia iTrader: (1)	Settings for V2 low end torque (like 1.47)? I miss the low end burst of speed with 1.47....I certainly appreciate the overall power that V2 provides, I just dont use the top end that much. Im a quick vs. fast kinda guy...what settings can I tweak with to get it closer to that?
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01-04-2008, 10:24 AM	#2
sflgator Major General 148 Rep 5,389 Posts Drives: '09 MB C63 AMG & '08 MB GL450 Join Date: Oct 2006 Location: U.S. iTrader: (1)	Are you running 93 octane? If so, what are your TQ Curve settings across the board? I'm running at 94% TQ Curve settings across the board (14.7-15psi max) and with the newer v2.0.2 maps (12-19-07 or later), you'll see much improved low-end TQ. __________________ \|2009 RENNtech MB C63 AMG \| Black/Black Leather/Black Maple \| Premium II \| MultiMedia \| iPod \| \| TeleAid \| Charcoal Filter Delete \| BMC High-Flow Air Filters \| High-Flow Secondary Cats \| Clear Side Markers \|
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01-04-2008, 12:32 PM	#10
slubu Never Go Full Retard 182 Rep 1,851 Posts Drives: White Lightning Join Date: Oct 2005 Location: Agrestic iTrader: (2)	What if you are on 91 oct, are you out of luck? __________________ 2008 335i
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01-04-2008, 01:13 PM	#12
rambino M Master 74 Rep 551 Posts Drives: M6 / X6M Join Date: Jun 2007 Location: SoCal / Florida iTrader: (3)	I run 94.7 octane here in germany... Think its safe to run 96% across the board. why not dip into 100% down low? Also when i do my data logging. What is the max PSI that should be safe for my car to run.. 15?
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01-04-2008, 01:19 PM	#13
OpenFlash 1737 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	You're not seeing 14.1psi at 90%. You're cursor is on the boost spike that occurs when you lift off the throttle. Your real boost pressure is a bit less (don't know exact because there is no boost reading on the way Y-axis in the graph you posted up). Also, you'll notice that that boost dip in the midrange has absolutely no effect on engine torque (as seen by the smooth, constant slope in the RPM graph). The dip is caused by a valve phase change. Boost drops but engine torque doesn't. If we attempted to shove in more boost to keep the boost curve flat, you'd get a torque bump in the midrange. shiv
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01-05-2008, 02:06 PM	#16
yahtzee El Capitan 138 Rep 699 Posts Drives: fast Join Date: Sep 2007 Location: Virginia iTrader: (1)	I'd really appreciate some feedback..Not understanding why my psi isnt climbing....I made a couple more runs this morning. Here are those two data logs..13.8 and 14.4psi.... I then filled up with Shell 93 (I only had ~20 miles left on reserve 91 octane) and drove approx 15 miles before running this last data log...13.8psi
	Appreciate 0 Quote