Wanted: UpRev Tuning DIY - Tuning 101?
Hi,
need to know flow capacity of the stock VQ35DE and DW600 injectors, so I can calculate K factor. Both values should be at the same base fuel pressure rate.
Thanks in advance!
Found this so far:
"The stock VQ 35DE comes with injectors from various manufacturers. The injector brands are installed at the factory randomly. What ever the factory had in stock is what your car received. You may notice that your stock injectors are a different color than your friends. Regardless of color or manufacturer they are the same size and performance. They are all high impedance injectors flowing 320CC per min @ the stock 52psi of fuel pressure or 3.5bar."
So for my math should I use 300 cc/min as a stock and 600 cc/min for DW injectors?
edit: according to the http://www.deatschwerks.com/products...-0600-6-detail deatschwerks flows 617 at 43 PSI. So DW600@52PSI flows 679 cc/min.
Numbers for the formula are 320 for old and 679 for new injectors.
need to know flow capacity of the stock VQ35DE and DW600 injectors, so I can calculate K factor. Both values should be at the same base fuel pressure rate.
Thanks in advance!
Found this so far:
"The stock VQ 35DE comes with injectors from various manufacturers. The injector brands are installed at the factory randomly. What ever the factory had in stock is what your car received. You may notice that your stock injectors are a different color than your friends. Regardless of color or manufacturer they are the same size and performance. They are all high impedance injectors flowing 320CC per min @ the stock 52psi of fuel pressure or 3.5bar."
So for my math should I use 300 cc/min as a stock and 600 cc/min for DW injectors?
edit: according to the http://www.deatschwerks.com/products...-0600-6-detail deatschwerks flows 617 at 43 PSI. So DW600@52PSI flows 679 cc/min.
Numbers for the formula are 320 for old and 679 for new injectors.
Last edited by tcode; Feb 27, 2013 at 11:09 PM.
What is Load Point Scaler in fueling section?
Found that one to. Thanks
"Load point scaler: I think we're going to pull this one out of the editor. What it does is rescale the BFS axis on EVERY table that uses BFS for load. We though this would be a quick way to rescale and keep everything in line, but the problem has been that there are dozens of other tables in the ROM that we don't know about yet and their lookups get altered as well. It worked fine on the older 350Z and Titans, but it seems to be problematic on the VVEL cars. The issue we've seen on the VVEL cars is that they don't maintain idle very well once you've tweaked this value."
Found that one to. Thanks
"Load point scaler: I think we're going to pull this one out of the editor. What it does is rescale the BFS axis on EVERY table that uses BFS for load. We though this would be a quick way to rescale and keep everything in line, but the problem has been that there are dozens of other tables in the ROM that we don't know about yet and their lookups get altered as well. It worked fine on the older 350Z and Titans, but it seems to be problematic on the VVEL cars. The issue we've seen on the VVEL cars is that they don't maintain idle very well once you've tweaked this value."
Last edited by tcode; Feb 28, 2013 at 10:45 PM.
Did not read properly. Thanks
This one can't figure by myself. What's Injector Priming Pulse by RPM table for? I'm hoping it's sort of acceleration enrichment since it's in relation with RPM. If it is, why is located in Cranking section?
What's for 2nd one too?
Also, need help with Fuel Target. This is how I currently set it.
Now, the problem is that according to the log file, whenever I hit WOT after 3000 rpm (both open loop conditions I guess), target AFR in log file is always lowest value in table (11,76), although tracer in ROM editors showing different, leaner, cell in Target AFR table. Since I'm N/A at the moment, I never hit more than 10-11 BFS, so target AFR shouldn't be lower than 12,54 or I'm missing something here? It's open loop and I set AFR with MAF table where I want it to be, but I'm curious why I'm getting wrong Target AFR value in my log files.
What's for 2nd one too?
Also, need help with Fuel Target. This is how I currently set it.
Now, the problem is that according to the log file, whenever I hit WOT after 3000 rpm (both open loop conditions I guess), target AFR in log file is always lowest value in table (11,76), although tracer in ROM editors showing different, leaner, cell in Target AFR table. Since I'm N/A at the moment, I never hit more than 10-11 BFS, so target AFR shouldn't be lower than 12,54 or I'm missing something here? It's open loop and I set AFR with MAF table where I want it to be, but I'm curious why I'm getting wrong Target AFR value in my log files.
?
injector prime is how much fuel is spit into the motor before it cranks over. helps with cold starts. Thats why its under cranking
what are your AF ratios when you hit WOT past 3000. closer to 13 or closer to 12?
what are your AF ratios when you hit WOT past 3000. closer to 13 or closer to 12?
.AF ratios are closer to 13, exactly where I want it to be. Tracer on the Fuel Target shows cell with AFR 13 too, but Target AFR in log is 11,76. So strange.
it is definitely not accel enrichment. that is based on delta TPS.
The targets can be set for whatever, but if your fuel map is way off past the 20% closed loop correction or you are open loop, then it doesnt look at that table.
The targets can be set for whatever, but if your fuel map is way off past the 20% closed loop correction or you are open loop, then it doesnt look at that table.
I see, thank you!
I have one more question..
Is it normal to have such a oscillation in MAF signal, as well in AFR (sometimes +-0,5)?
I'm suspecting that my MAF sensor isn't very healthy.
I have one more question..
Is it normal to have such a oscillation in MAF signal, as well in AFR (sometimes +-0,5)?
I'm suspecting that my MAF sensor isn't very healthy.
Last edited by tcode; Mar 17, 2013 at 06:56 AM.
Anyone have any info on cam tuning? I have a non rev with JWT S1 cams running on the stock cam tables.
I just feel there is more on the table not tuning my cam tables for my cams and longtube headers. My tuner will not mess with the cam timing even though I state that I'm cammed.
Chiper log is "standard" Comma Separated Values type of data (.csv). You can open it with any .csv viewer, even MS Excel will work.
You can dl and install latest MegaLog Viewer from here:
http://www.efianalytics.com/MegaLogViewer/
You can dl and install latest MegaLog Viewer from here:
http://www.efianalytics.com/MegaLogViewer/
After installing supercharger, MAF signal smoothed. Probably because air delivery is more consistent now. However, MAF sensor maxed out at 5k rpm (5.12V). Ordered PMAS HPX, hopefully won't be too hard make it work properly at idle.
It takes alot of finessing to get the idle stabilized. I ended up flattening the table in the idle area below 1.1V or so and let the ECU regulate idle via closed loop and it's pretty much dead on now. There just isn't enough resolution to be useful to fine tune that area, you'll end up with a surging idle +/- 50rpm or so. Be prepared to pretty much do a full retune as well.
Last edited by djamps; Apr 8, 2013 at 08:56 AM.
It takes alot of finessing to get the idle stabilized. I ended up flattening the table in the idle area below 1.1V or so and let the ECU regulate idle via closed loop and it's pretty much dead on now. There just isn't enough resolution to be useful to fine tune that area, you'll end up with a surging idle +/- 50rpm or so. Be prepared to pretty much do a full retune as well.