Attn: turbo guys

blackonorange · 04-12-2012, 10:41 PM

Whats your wot afr? Mine is 11.5-11.7 is this lean ?

blackonorange · 04-12-2012, 11:17 PM

Also can some one fill me in on how our car "rides" the knock sensor?

Dembflyr · 04-13-2012, 12:55 AM

Not sure about the knock sensor question but I know that 11.5 is a nice safe AFR at wot. That's right where I am.

blackonorange · 04-13-2012, 01:04 AM

Do you know what your timing is at at wot?

Brazilbro · 04-13-2012, 01:05 AM

You're all good , now turn boost to 12psi

Dembflyr · 04-13-2012, 01:20 AM

Quote:

Originally Posted by blackonorange

Do you know what your timing is at at wot?

Not sure. My hard drive on my laptop died recently and I lost everything. My data logs from last year were in there.

seymore4 · 04-13-2012, 02:42 AM

Right around 11:1 is perfect, i'd be cautious of anything over 11.7 but that should be alright

Baer383 · 04-13-2012, 08:35 AM

Quote:

Originally Posted by seymore4

Right around 11:1 is perfect, i'd be cautious of anything over 11.7 but that should be alright

Sam told me he wasn't worried about 12:1,being @ 11:1 is going to be a little rich.

esfourteen · 04-13-2012, 09:18 AM

Generally speaking, 11.3-11.8 is what most run with boost. apparently the widebands in the Z read 1 point richer in cipher so if you are looking at those you might see 10's.

As for the "riding" the knock sensor, are you asking how the ecu uses it in regards to timing? Our ecu will use a few sensors to determine if it can advance/retard timing, knock is one of them. If the ecu detects knock it will retard timing, but when you are making 500whp it cannot respond fast enough to realistically prevent damage. When people tune the Z using uprev for boost, they will retard the timing tables a bit to prevent the ECU from getting as aggressive as it does from the factory which is too much for boost.

Essentially this limits how far the ecu can advance timing, but it will still advance/retard timing within those limits based on IAT, knock etc.

blackonorange · 04-13-2012, 10:06 AM

Quote:

Originally Posted by esfourteen

Generally speaking, 11.3-11.8 is what most run with boost. apparently the widebands in the Z read 1 point richer in cipher so if you are looking at those you might see 10's.

As for the "riding" the knock sensor, are you asking how the ecu uses it in regards to timing? Our ecu will use a few sensors to determine if it can advance/retard timing, knock is one of them. If the ecu detects knock it will retard timing, but when you are making 500whp it cannot respond fast enough to realistically prevent damage. When people tune the Z using uprev for boost, they will retard the timing tables a bit to prevent the ECU from getting as aggressive as it does from the factory which is too much for boost.

Essentially this limits how far the ecu can advance timing, but it will still advance/retard timing within those limits based on IAT, knock etc.

I've done some research and if your timing dips 4-5 degrees during wot acceleration you detonated, I haven't seen my timing do this so I'm not worried just for ease of mind , thanks for your info

04-12-2012, 10:41 PM	#1 (permalink)
blackonorange A True Z Fanatic Join Date: Jul 2011 Location: Saskatchewan Posts: 1,078 Drives: 09 370z Rep Power: 16	Attn: turbo guys Whats your wot afr? Mine is 11.5-11.7 is this lean ?

04-13-2012, 12:55 AM	#3 (permalink)
Dembflyr Track Member Join Date: Feb 2010 Location: Indiana Posts: 886 Drives: G37S Sedan Rep Power: 16	Not sure about the knock sensor question but I know that 11.5 is a nice safe AFR at wot. That's right where I am. __________________ 2012 G37S Sedan 6MT - Project Practicality 2009-6MT-Sport/Touring-Dembflyr's Journal-TT Build Thread-CAR IS SOLD

04-13-2012, 01:05 AM	#5 (permalink)
Brazilbro A True Z Fanatic Join Date: Mar 2009 Location: Indianapolis, IN Posts: 1,131 Drives: Juke/240Z Rep Power: 848	You're all good , now turn boost to 12psi __________________ Juke AWD/240Z SR20 08 Evo 10(Stage 2) SOLD Fastest Sport 6spd 370Z 11.8 @126.5SOLD

04-13-2012, 09:18 AM	#9 (permalink)
esfourteen A True Z Fanatic Join Date: Mar 2010 Location: LI, NY Posts: 1,375 Drives: 40th TT Rep Power: 18	Generally speaking, 11.3-11.8 is what most run with boost. apparently the widebands in the Z read 1 point richer in cipher so if you are looking at those you might see 10's. As for the "riding" the knock sensor, are you asking how the ecu uses it in regards to timing? Our ecu will use a few sensors to determine if it can advance/retard timing, knock is one of them. If the ecu detects knock it will retard timing, but when you are making 500whp it cannot respond fast enough to realistically prevent damage. When people tune the Z using uprev for boost, they will retard the timing tables a bit to prevent the ECU from getting as aggressive as it does from the factory which is too much for boost. Essentially this limits how far the ecu can advance timing, but it will still advance/retard timing within those limits based on IAT, knock etc. __________________ Build Thread \| GTM TT Install Thread \| Engine Build Thread

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04-12-2012, 11:17 PM	#2 (permalink)
blackonorange A True Z Fanatic Join Date: Jul 2011 Location: Saskatchewan Posts: 1,078 Drives: 09 370z Rep Power: 16	Also can some one fill me in on how our car "rides" the knock sensor?

04-13-2012, 01:04 AM	#4 (permalink)
blackonorange A True Z Fanatic Join Date: Jul 2011 Location: Saskatchewan Posts: 1,078 Drives: 09 370z Rep Power: 16	Do you know what your timing is at at wot?

04-13-2012, 02:42 AM	#7 (permalink)
seymore4 Track Member Join Date: Nov 2010 Location: West coast Age: 41 Posts: 560 Drives: 2010 nismo Rep Power: 6727	Right around 11:1 is perfect, i'd be cautious of anything over 11.7 but that should be alright