Replaced the KS last night since I was getting the code and have noticed a nice increase in power throughout the range. However, the low end improved the most especially the smoothness of power delivery.

A friend of mine on the org (speedemn) has an OBD2 scanning tool that can log dynamic ECU parameters, one being ignition advance. I ran WOT in 4th and timing was steady at 12 then moving up to 19 as higher RPM's were reached.

My question is what is normal?

 

That sounds low for a stock ecu. At what rpm were you getting 19 degrees?
What octane fuel are you running and what was the ambient temp?

The red curve below is what I logged for a stock 96 ecu (GXE). All the data was recorded during 3rd gear WOT runs with 94 in the tank and ambient temps of 40F or less.

 

19 was the higher 5200RPM+ range, 94 octane, about 22 degrees

 

yup your timing seems way off

 

Is this at WOT?

Readings at part throttle aren't really of any use.

My 02 doesn't go above 17 at WOT in all gears.

 

Wanna know why some VQ35's have more power than others?

 

The data in the curves above are all from WOT runs. Part throttle cruise advance is around 45 deg.

 

Mine are all at WOT aswell, today yielded some 10-12 steady then creep to 18ish in the higher RPM's again.

Is there any kind of computer system that can let me adjust all timing specs and essentially bypass the KS?? I am getting sick of this KS crap.

 

When you replaced the KS how tight did you torque it? Overtightening will make it too sensitive...

 

Hmmm probably a little more than 15-20 ft-lbs. I will check and rerun..

 

I believe 14-16 is the proper tq, but I don't remember.

 

Well retightened it to approx 15-20 and it worked momentarily seeing about 17-25 degrees then fell back to 9-14 for the remainder of my trials. POS! lol

 

Update: So now I clear the KS code which has come back GRRR and it comes back one second later. The KS is definately having problems. Anyone know if I can pick up a new KS harness??

 

Ok found the KS harness from courtesyparts but they don't ship to FRIGGIN CANADA!!

 

www.courtesyparts.com and JRnissan.

 

Neither Courtesy Nissan or JR Nissan ship to Canada.
I have been buying all my parts from Pinnacle Nissan in Scottsdale, AZ.

http://www.trademotion.com/partlocat...96&catalogid=1

 

I got my STS from Courtesy Nissan... they sent it via USPS IIRC...

Chris, are you sure it's a harness you need? No matter the part I can get you 15-20% discounts at Kitchener Nissan. Ask Anish about it I've helped him out a few times. But Pinnacle's KS prices seem very good too. You'd have to figure it all out with shipping etc.

 

OK thanks Dan, I am going to hopefully try another new KS that Anish has. I really need something to compare to in order to rule out the KS sensor being bad. Will the Emanage Ultimate completely bypass the KS allowing me specify all timing values??

 

And undertightening it will f*ck it up. Saturday, 2 weeks ago, I was running low 14's at 101-102 mph. I stayed for Sunday and retightened the bolt some. Right off the bat the car pulled a 104.28 mph trap speed, and went on to a best of 105.29, with 2 other 105's and a whole bunch of 104's. It was hotter outside than Saturday. And it really felt like it was pulling hard, so I'm 99% sure the timing went back up to normal.

 

Been tightening to various tq ranges and still throwing the code and sucking some hard ***. Initially I can get the 25 degrees in 2nd gear the very first time I hit WOT after tightening... hit 3rd and everything dies out to about 11-12 degrees. Feels like a 16 second car right now.

 

Are you sure this KS is good? Did you try the other new one Anish has? I've run into it a couple times where a KS will measure to spec just fine when cool but as soon as it's heat stressed (ie after the engine gets hot) it fails. Is this the only code you're getting?

 

Have not had the chance to test Anish's as he has to see if his car is throwing the code right now. Also getting the VSS code but the KS code is nearly instantaneous after clearing.