Timing Advance - Definitive Proof
#1
Timing Advance - Definitive Proof
It is something I have always wanted to see but to this day I do not think it existed. I wanted to see dyno proof of any increase the 2 degree timing advance would show.
Last week when I dynoed, I recorded just this data.
Let the commenting begin.....
Last week when I dynoed, I recorded just this data.
Let the commenting begin.....
#2
As you can see, it was about 3 hp and 2.5 tq.
The dynos were done back to back. I did two at 15 degrees and two at 17 degrees (back to back).
The other mods that were involved:
K&N Filter
Place Racing CAI
Big Bore MAF Housing (76.2mm ~ 3") with 2k1 MAF Sensor with IAT Swap
Polished TB
Polished Elbow
Ported & Polished Non-VI Upper Plenum
Ported & Polished Lower Plenum
Z33 Injectors
2 Degree Base Timing Advance
Cattman Gen II Headers
Rear O2 Sensors Simulated
LSA Test Pipe (No Cats)
Stock B-Pipe and Muffler
15.9 Lb Konig Traffik Wheels with BF Goodrich Drag Radials
The dynos were done back to back. I did two at 15 degrees and two at 17 degrees (back to back).
The other mods that were involved:
K&N Filter
Place Racing CAI
Big Bore MAF Housing (76.2mm ~ 3") with 2k1 MAF Sensor with IAT Swap
Polished TB
Polished Elbow
Ported & Polished Non-VI Upper Plenum
Ported & Polished Lower Plenum
Z33 Injectors
2 Degree Base Timing Advance
Cattman Gen II Headers
Rear O2 Sensors Simulated
LSA Test Pipe (No Cats)
Stock B-Pipe and Muffler
15.9 Lb Konig Traffik Wheels with BF Goodrich Drag Radials
#3
For those of you who would like to see the runfiles, they can be found at the link below:
http://hsvracing.com/upload/6spd_Hay...Dyno/Runfiles/
For those who know Excel, all data, charts, and analysis can be found at the link below:
http://hsvracing.com/upload/6spd_Hay...-26%20Dyno.xls
http://hsvracing.com/upload/6spd_Hay...Dyno/Runfiles/
For those who know Excel, all data, charts, and analysis can be found at the link below:
http://hsvracing.com/upload/6spd_Hay...-26%20Dyno.xls
#5
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I always thought when the base timing is bumped 2 degrees, it bumps the whole curve 2 degrees, even at WOT. This confirms it.
Elon, you need to add some more timing at WOT though, there is more power left in that thing.
Elon, you need to add some more timing at WOT though, there is more power left in that thing.
#8
Even though it seems to go against what we used to believe, I must say I totally believe this. With my Auto Enginuity I can advance the timing upto 17 degrees and I can retard it all the way down to zero or less. When I do this, the car feels like total garbage and it isn't just at the low end. The entire band feels weak.
#9
Originally Posted by SR20DEN
Even though it seems to go against what we used to believe, I must say I totally believe this. With my Auto Enginuity I can advance the timing upto 17 degrees and I can retard it all the way down to zero or less. When I do this, the car feels like total garbage and it isn't just at the low end. The entire band feels weak.
I guess I should go edit all my old posts
#10
Also we should remind everyone that he only did a 2º timing bump. The 2k3, 2k3 cars are supposed to be at 15º from the factory but none of them are. They are all at 14º stock. So it would really be a 3º bump.
#11
Originally Posted by SR20DEN
Also we should remind everyone that he only did a 2º timing bump. The 2k3, 2k3 cars are supposed to be at 15º from the factory but none of them are. They are all at 14º stock. So it would really be a 3º bump.
#12
Originally Posted by nismology
Whether the starting point is 15° or 14° the consult II/Cipher can only do +/- 2°, correct?
My Auto Enginutity can take the timing down to 0º, so long as it is connected. The ECU holds anything from 13º to 17º.
#13
Originally Posted by nismology
Whether the starting point is 15° or 14° the consult II/Cipher can only do +/- 2°, correct?
#20
Originally Posted by redls1
Well I paid like a fool and he left a log file that I posted in another thread. Can someone decipher it for me and kinda explain it a little?
#21
explain how this can be done on a 6th gen since there is no distributor *spelling?*
my friend who owns a shop said he did it for me a few weeks ago when i was gettting some stuff done on the car... but when i went to another mecahnic today that i am close with, he said he had no idea how ppl were doing it if there is no distributor...
can someone explain how to do it on a 6th gen so i can explain to him..
my friend who owns a shop said he did it for me a few weeks ago when i was gettting some stuff done on the car... but when i went to another mecahnic today that i am close with, he said he had no idea how ppl were doing it if there is no distributor...
can someone explain how to do it on a 6th gen so i can explain to him..
#22
explain how this can be done on a 6th gen since there is no distributor *spelling?*
my friend who owns a shop said he did it for me a few weeks ago when i was gettting some stuff done on the car... but when i went to another mecahnic today that i am close with, he said he had no idea how ppl were doing it if there is no distributor...
can someone explain how to do it on a 6th gen so i can explain to him..
my friend who owns a shop said he did it for me a few weeks ago when i was gettting some stuff done on the car... but when i went to another mecahnic today that i am close with, he said he had no idea how ppl were doing it if there is no distributor...
can someone explain how to do it on a 6th gen so i can explain to him..
It can be done the same way it is done on years 00+.
Ask !Prjmax!, he has it, as well as a slew of others. Take it to the dealer, or use OBDII capable software (i.e. AE, Cipher etc)
Last edited by NmexMAX; 09-26-2007 at 09:13 AM.
#26
Nah, I got this done like 2-3 years ago. I knew a guy who worked for the local dealership and he called a mechanic to tell him what was going on. The mech was cool with it and did it quick, I offered a 20 and he said no thanks. They arent really doing much, just hooking up their scan tool for about 3 minutes.
#27
yeah hook up the scan tool, press the screen 3 or 4 times cant remember and then its done lol..still nice to leave tip if they are doing it for free. the tech could potentially get in **** if they are caught working for free lol..
#33
I wouldnt recommend going up to the service desk and asking one of them...
#38
I can confirm this in Cipher as well. I had a buddy hook it up and it showed -1*. He was able to set it to +2 which is a total of 3* advance. Too bad I've since changed my battery so I need to flash it again. I'm willing to bet the gains are about 5 whp for the full 3*.
#39
FlawleZ> I think the ECU saves the timing advance even if you disconnect your battery (someone correct me if i'm wrong). The timing would only go back to 15° if you get a new ECU.
I went to Nissan this morning to flush and refill my transmission. (I tried to do it myself but the drain plug was so tight I almost rounded it. I don't know what Nissan engineers were thinking using those allen bolts for the plug, they are notorious for rounding up).
I paid the tech guy $40 to advance the base timing to 17°, and in return, he charged me only half an hour for the gear oil change instead of an hour. I ended up paying $45 for the gear oil change + $40 cash for the tech, where a full hour of labor would have been around $100.
In the end, I gained 3hp and saved $15
I went to Nissan this morning to flush and refill my transmission. (I tried to do it myself but the drain plug was so tight I almost rounded it. I don't know what Nissan engineers were thinking using those allen bolts for the plug, they are notorious for rounding up).
I paid the tech guy $40 to advance the base timing to 17°, and in return, he charged me only half an hour for the gear oil change instead of an hour. I ended up paying $45 for the gear oil change + $40 cash for the tech, where a full hour of labor would have been around $100.
In the end, I gained 3hp and saved $15
#40