17 Degree timing adv. Question
04-12-2005, 10:00 AM
#1
Senior Member
Thread Starter
Join Date: Oct 2001
Posts: 242
17 Degree timing adv. Question
Ok, to those of you whom have had your timing advanced, where does the 17 Degrees come from? I ran the other day on the expressway with my Auterra and watched my timing. I ran anywhere from -7 Deg. (start- coast)up to 34 Degrees at WOT. If you advance to 17 Deg, does that mean you can hit say 45 Degrees Advance at WOT? Since the computer is always adjsuting it, I guess my question is what good is the advance?
Thanks.
Thanks.
04-12-2005, 10:31 AM
#2
Senior Member
Join Date: Feb 2005
Posts: 119
Originally Posted by VQ30GTR
Ok, to those of you whom have had your timing advanced, where does the 17 Degrees come from? I ran the other day on the expressway with my Auterra and watched my timing. I ran anywhere from -7 Deg. (start- coast)up to 34 Degrees at WOT. If you advance to 17 Deg, does that mean you can hit say 45 Degrees Advance at WOT? Since the computer is always adjsuting it, I guess my question is what good is the advance?
Thanks.
Thanks.
BTW how do you like the Auterra? Any dislikes with it?
04-12-2005, 10:41 AM
#3
Supporting Maxima.org Member
Join Date: Oct 2002
Posts: 1,042
Originally Posted by skeetch
It has to do with advancing the base timing. Stock is (15 +/- 2 deg. BTDC) for 00+. So if you advance 2 deg BTDC that puts you at 17 deg base. Therefore, you will not see 45 deg WOT but 36 deg. 45 deg is way too advanced. I am not too familiar with the 3.0L and modding it yet so I don't know how you go about advancing the base timing. I am guessing this can only be done by programming/chipping the ECM or adding a piggy-back system. Can anyone enlighten me on this?
I can personally report that the torque and HP increase has done bad things for my tire life...
04-12-2005, 10:46 AM
#4
Senior Member
Join Date: Feb 2005
Posts: 119
I figured as much since the system is distributorless. Wouldn't you see more benifits if the EGR system is removed. When I turbo my other car I removed the EGR (had to cause I installed headers) and advanced my base timing 2 deg as well.
BTW I saw a Consult II on ebay a while back and those suckers are quite expensive!
BTW I saw a Consult II on ebay a while back and those suckers are quite expensive!
04-12-2005, 11:04 AM
#7
Senior Member
Join Date: Jul 2004
Posts: 489
Originally Posted by Maximax2
Advanced timing can be done by the dealer, or other shop with an OBDC II scan tool. I know it's up to 17 degrees on a 2k2/2k3, think it's up to 20 degrees on a 2k-2k1?
I can personally report that the torque and HP increase has done bad things for my tire life...
I can personally report that the torque and HP increase has done bad things for my tire life...
04-12-2005, 11:10 AM
#8
^^^ Only using a consult II.It's the base ignition, so 15*BTDC is stock. I'm dynoing this on an automatic this weekend. Butt dyno is pretty noticeable, but that doesn't say ANYTHING at all, one thing tht was noticeable was the engine sound has changed.
Basically spark advances to 17* before top dead center, and allows for more complete combustion when high grade fuel is burned.
04-12-2005, 11:12 AM
#9
For every degree, you gain roughly 5hp to the wheels. 2-degrees = 10WHP. It's the best mod you could possibly do to your car. And it's free...I remember feeling the difference as soon as I went back on the highway. I typically floor my car when merging onto highways, so when I floored my car going around 30...I got this insane surge of power that I've never felt before.
To this day I like to feel the advance timing go into work. Best mod ever.
To this day I like to feel the advance timing go into work. Best mod ever.
04-12-2005, 11:14 AM
#10
Senior Member
Join Date: Feb 2004
Posts: 292
Originally Posted by NYPD-Arnold
For every degree, you gain roughly 5hp to the wheels. 2-degrees = 10WHP. It's the best mod you could possibly do to your car. And it's free...I remember feeling the difference as soon as I went back on the highway. I typically floor my car when merging onto highways, so when I floored my car going around 30...I got this insane surge of power that I've never felt before.
To this day I like to feel the advance timing go into work. Best mod ever.
To this day I like to feel the advance timing go into work. Best mod ever.
04-12-2005, 11:23 AM
#11
Originally Posted by NYPD-Arnold
For every degree, you gain roughly 5hp to the wheels. 2-degrees = 10WHP. It's the best mod you could possibly do to your car.To this day I like to feel the advance timing go into work. Best mod ever.
But I do predict this will add some area under the curve when I dyno this Saturday. The engine sound is different as well. Keep in mind NYPD is a 3.0 and I'm a 3.5L, so it's beneficial on both spectrums.
04-12-2005, 11:27 AM
#12
Supporting Maxima.org Member
iTrader: (3)
Join Date: Apr 2003
Location: the OC & Silicon Valley
Posts: 2,586
if only dealerships around here weren't so b!tchy. anyone in socal done this let me know, as far as i know dealerships pretend like they dont even know what youre talking about when you mention it!
04-12-2005, 11:42 AM
#13
Talk to the service manager, I live in a pretty rural area, so I had my doubts about the delaerships around, and both places I checked would do it, only one does it regularly though, the otehr one I had to explain in a little detail, but as far as finding one, I figure in your area shouldn't be too hard. Or just buy a consult II, probably be worth it in the long run.
.
04-12-2005, 12:18 PM
#20
Senior Member
Join Date: Feb 2004
Posts: 292
lucky.......i'm gunna look into that i gotta get in soon to stealer cuz my driver's window shorted, and keeps blowing the fuse.......which is the same curcuit as the sunroof, power seats, locks, etc, so right now i can't do anything except drive it........well my heated seats still work, i'd be more motivated to get it in if they didn't lol
04-12-2005, 12:59 PM
#25
Member
Join Date: Aug 2003
Posts: 297
i literally just had my timing advanced from stock 15 degrees to 17. I had this done with my oil change and i also had them check my throttle position while it was on the machine, came to 42.50 for the timing and throttle...here is what it said on the reciept
customer request
re-set ignition timing to 17 degrees. verify operation of throttle-position sensor.
re-set base ignition timing with "consult". checked specifications on T.P.S. switch. (with normal range)
(note: ecu will alter all engine specifications in accordance with sensor inputs. (including "detonation" sensor which is affected by fuel octane.)
and i knew about the "note" the ecu will know if i start to put ****ty gas in/not 93 and alter the specs.
and looking at the "re-set base ignition timing" i'm hoping they forgot to say 17 degrees, because that's what i asked them to do...anyway my car felt much smoother at idle and felt more responsive especially when i was getting on the highway heading home.
customer request
re-set ignition timing to 17 degrees. verify operation of throttle-position sensor.
re-set base ignition timing with "consult". checked specifications on T.P.S. switch. (with normal range)
(note: ecu will alter all engine specifications in accordance with sensor inputs. (including "detonation" sensor which is affected by fuel octane.)
and i knew about the "note" the ecu will know if i start to put ****ty gas in/not 93 and alter the specs.
and looking at the "re-set base ignition timing" i'm hoping they forgot to say 17 degrees, because that's what i asked them to do...anyway my car felt much smoother at idle and felt more responsive especially when i was getting on the highway heading home.
04-12-2005, 01:30 PM
#26
Bob Moore here in Norman wanted 80 bucks to do it. Needlesss to say I told them they were nuts and that it only takes literally 3 minutes to do. So I have decided I am going to give my connection in the service dept at Sewell Infiniti in Dallas a call and see if he will do it for me for cheaper the next time I am down in DFW.
04-12-2005, 02:55 PM
#29
Member
Join Date: Aug 2003
Posts: 297
Originally Posted by vsamoylov
man i want to do this but its going to be tricky for me trying to tell them about my car. did you guys just go to the service depratment and ask them to advance your timing to 17 degrees or what?
04-12-2005, 03:08 PM
#31
Originally Posted by NmexMAX
0-$95 I've heard. Some charge an hr, some charge .25 hour, and hr rates are different so 
Depends where you're at and how you ask them I guess.
Depends where you're at and how you ask them I guess.
04-12-2005, 03:09 PM
#32
Member
Join Date: Aug 2003
Posts: 297
Originally Posted by vsamoylov
yeah i really want to get this done to my max. i am using the 2k2 ecu. basically everything is 2k2 except the body. i just need to find a dealer that will do this. how much do they usually charge?
04-12-2005, 03:27 PM
#33
Most service people have no idea what I am talking about. Local Nissan dealer says "we are not allowed to make any unauthorized modification to the car without factory approval". Did he just read that **** out of some book while I was on the phone with him? F@cking ignorant weaklings.
04-12-2005, 03:35 PM
#37
We will see this on Saturday, as I am planning on dynoing but i have a 3.5. 2 degrees is usually the max they recommend. It's hard to swallow the whole 5hp/degree deal, I've read 2 hp/degree but still. Iw ant to see what it does for myslef and ahsre resutls.
Larrio. you're back
Larrio. you're back
