on my current tune I have been running 30 deg of timing up top and 25 mid range, my MAF Vlts are 3.2- 4.41 at up top. AF's are solid High 12's right to 7700.

The hard thing about that is your probably going to go past your MBT before you encounter knock, especially if you are running good fuel.

Thats what makes it hard to road test especially a engine running good fuel that wont knock before MBT, there is no real indication you pasted MBT unless you can monitor the power output. If you go past MBT then that power loss is going straight to your rods, pistons, and head gaskets all the while being unannounced to you.

When your boosted or running bad fuel then a set of knock headphones will be adequate as your going to knock well before MBT anyways so there is no threat of running the timing to aggressive with respect to MBT.

Thanks guys.

I am taking my car to a dyno shop on Wednesday, will post the final result with the logs once its all done.

Any tips on VVEL tune or is it even necessary with NA running stock cams?

My tuner , Tuned my VVEL, :) Will see what happens when I hit the dyno next weekend. :)

My tuner has been tuning VVEL for awhile now. He seems to get pretty good results from it NA but I cannot speak personally as he didn't tune mine again until I went FI.

Just got back from a dyno shop.

Their reading is quite a bit lower than dynapack etc used in the states.. so comparing numbers wont work unfortunately. But you can see the before and after (which is more important that bragging numbers) figures here. Also increased the rpm by 200rpm

Their A/F reading is quite different than what I see from logging too, so I ignored thier A/F reading (sniffer at the exhaust tip). The car actually runs close to 12.5:1.

The car did not knock at all, and even though I wanted to run more timing up top, it was not allowing me to go any higher than 30~31deg. Tried both burntime table and VHR timing tables, they don't seem to take it any higher.

Overall 5% gain, I am happy with it. Have not played with the VVEL because I was not sure what to do with it yet. Apparently VVEL C table is what is used when WOT. Anyone wanna share VVEL tuning techniques?

I will post up the screenshots of my tune later today, and do another data logging (forgot to save the log after the tune..).

Screenshot of my current tune.

running stupid amount of numbers hoping to add some timing, but it does not go over 31deg.

There wasnt any knock, at least not audible using the headset, still would not add timing to my liking.. perhaps the ecu is much more sensitive? The knock threshold table is there but not sure what to do with it..

Just done another logging after the tune, the A/F went leaner than before by about 0.3~0.5 overall, I think its to do with colder air temp at night.. its about 10degC cooler now.

Hopefully those of you wanting to tune the car yourself will find this useful.

You can see that it is running considerably more timing than the last map, hence the power gain. The MAF reading seems slightly high also, probably reflecting the power gain there also?

In short, what I did was just adding stupid amount of number into the VHR timing map, it does not add more timing after certain amount, and the car did NOT knock AT ALL.

I am guessing that for NA, dyno tune may not be really necessary, just try and run as much timing as possible and call it the day.

I was expecting to hear the knock or see the power dropping off, but none of these happened. Each timing increase also resulted in power gain and I kept on adding numbers wanting to run more timing, it hit the wall and would not go up any higher, so I just called it the day.

I think I should have played with the VVEL C table more. Apparently this is exactly the same as what the log shows. Should try increasing/decreasing the entire value by 10deg or so and do the power run and compare the differences..

Interesting, I really wish uprev had a better idea of what is going on with the knocking algorithm in the ECU. You could try increasing those knock tables and see if you can make the car knock with your headphones hooked up.

Its funny because with my FI car I can make the thing knock like crazy if I wanted to, there seems to be no knock detection (or maybe its because my timing is below a certain threshold?) Again its all just guesses with uprev.

Sorry for the newb question but where is the knock monitor on UPREV, When I data log it's not an option box? How can I see if my car is knocking, Tossed a few codes yesterday, P0011 intake cam advanced to far, and P0300 Radom misfire. I did however find a vacuum leak at the intake manifold. I fixed before I cleared them.

You cant log it. You can see the timing pulled as a result to knock, you really cant see anything but the overall timing retarding itself for what would seem like no reason. I believe it was watchable in the 350Z but that didnt come over to us. Essentially the only way to watch it would be to hook up some headphones and see if anything you hear corresponds to a lower overall timing.

If you log it using rom editor instead of cipher, there is this 'knock strength' figure you can record. dont really understand it though, it seems to move up and down slightly regardless of the resulted ignition timing.

Just made a new map with increased knock thresholds by 1000 overall, will do another run tonight and see if the timing changes.

Goodluck! Im glad to see someone else playing with Uprev.

my experience playing with it was that there is nothing, NOTHING you can do to get rid of the timing dip from 4500-6200 so if you figure something out great. On the VVEL side for S's and G's I ran a table C that was a straight line at 85 w/e units uprev thinks it is and the log showed the exact same VVEL opening curve so good luck there, who know maybe it only actually works on certain rom's I told it to set cam timing to 0 across the board as well and that did nothing. I can make the car run 7:1 but timing, cam advance, and vvel tuning are cheap guesses at best if not outright lies, that or it is super picky about changes which means uprev hasn't figured enough of it out yet to actually make it effective.