I contacted uprev. Let's see if they join the conversation.
I know Jared has been posting here so he might chime in.

 

would be great...

 

They replied with a request to fill out the support form.
I think it's better that you will do it so the description is as accurate as possible.

Fill out the form from the link below
http://www.uprev.com/supportform.html

 

All right, I've sent them filled form with link to this thread... we'll see maybe they help us...

 

Ok so i've been reading this and need a little bit of help with ignition timing. Can any one give me general idea of what I should set my timing to for a 04 G35 with a procharger 12psi pulley 11:1 compression 7200 rev limit 91 oct with 10% ethanol added.

 

My timing drop to -3, -7.. for 1 seconde when the engine load raise too fast.. On dyno everything is fine because tuner snap gas pedal at 2000 rpm and load raise smoothly..

I have tried many thing for troubleshoot this problem and after 2 dyno tuning with 2 differents tuner i still have this trouble.

I have tried new wideband, cam sensor, put or remove timing/fuel..same trouble with oem maf, but now i run with Uprev maf.. i have a knock sensor connected but not on bloc so he cant see if my engine really knock but didn't solve my problem..

I wonder now if my maf is well positioned right after a 75deg. bend..
I thing i'll try to put my maf on green spot (see my pic)
GTM twin turbo kit STG2
Sorry for my english

 

Show your timing map and upload full log spreadsheet.
IMO maf is wrong positioned but if you are able to keep AFR on desired level and measurments are repetable I wouldn't touch it.
You probably had knock in this area and tuner retarded timing.
Do you have dyno graph?
Intake Air Temp is in F or C degrees?

 

Have not knock and intake temp is in F so it's nearly 29C.
My dyno graph are smooth and everything seem good on dyno because load raise smoothly



I'll check for find dyno graph and post it.

 

This log you uploaded looks like idle calibration and have a look at AFR bank 1 and 2 differences... ~14,7 vs 11,25??? It's not good. It doesn't show IGN TIMING values and top engine speed is 2500... it's not this what you mentioned before...



This timing map you shown looks rather OK but it's not a map from log screenshot you pasted before... In area of ~5200 RPM and BFS ~14 your timing is -7 deg... I would expect value ~20 in timing map in one cell somewhere in this area but you have 46...

 

What would the reason for the A/F to be off between banks like that at idle? I have a similar issue with A/F correction between banks at idle being off similar to this.

 

Bank 2 swing like this at idle/low load and I do not know why, new wideband and I also changed the cam sensors & check for leak.. i have brand new DW850cc but same problem with other injectors (RC650) ?!?
Every injectors have the same compensation (100).

Sorry, I posted the wrong log ...
You need to scroll up to line 7390 to see timing drop with big load.

46 isn't the degree of timing but burning time..maybe this is not the right mapping because i seen 2 different tuner but mapping are very similar..i can do new log just to show you but i have the same problem at high load since i have installed tt kit..same trouble with oem maf and i changed to Gt maf because they maxed out (over 4.7V)

 

First of all IMO MAF and fueling are uncalibrated...If you see AFR 11,25 your real AFR might be much lower...maybe 10...but your wideband is not able to measure below 11,25...check MAF table and injector settings like latencies and minimum PW.

Im not sure but some part of your logs show something like maybe clutch slip or traction problem...Maybe that's why ECU retard ignition in these areas and you cant calibrate this.



I know how to read IGN Tables... I meant that to see -7 deg of timing in log you should have value approx 20 in the table...

 

I have no idea what is being said in this thread, but I wish I understood tuning. The users on this thread are rocket scientist for sure.

 

I am disappointed to see that many tuner trusts too much on wideband to adjust the fuel & maf table.. I'll go to see another one this summer ..

At this time, i run with lower timing to avoid knock..

I also installed another knock sensor attached to an electrical harness to be sure that my problem is not with the knock sensor under the intake..same trouble.

And that's a problem of traction.. it's not a problem on dyno but when I datalog in the street, it happens ..

thanks for help!

Next week i'll do another log, you think i need to log other sensor?

 

You can rely on widebands on car but you must be on target AFR.
Your target at high load is 11,98 but you dont know what you really have because your wideband doesn't measure below 11,25...play with MAF tables...

I think the best way for you is to attach new knock sensor and connect it to PC to record how your engine is running. Do some pulls and then upload mp3 file here...if you dont know what to listen for...
If you know, connect knock sensor to set of headphones through amplifier.

How much boost you running? Engine is forged or not?

 

help me plz .... i have infiniti g37 ... 2012 with little modification ...
- magnaflow cat-back system
- afe cold air intake systems

i need some help with electronic throttle adjustment plzzz

 

Micho196; forged with Wiseco 96mm & Eagle combo, stock head. runing16psi but same problem at low boost..nearly 7psi
You use the knock amplifier sold by Uprev?

 

I use FIIO E6 as amplifier and I built filter using uprev schematic so I can say that I use their solution...

 

Can someone tell me how to use djamps MAF tool? Are the values that appear in the AFR 1/2 (Cor.) column after you upload your log values that you need to multiply your existing MAF values with?

So in the 1.8V MAF table row, I need to multiply the value by .95 (or .94)?

Also, when I try clicking the button for "Fuel Table" and hit recalculate, the table that populates is completely blank. Any tips on how to get this to populate correctly?

Thanks,

 

Yea multiply it by that number.