Attached are the log file of my 4th gear WOT and other file and screenshots. There were some knocks when boost peak and I removed them by lower the timing by 1. This is a 4th gear pull as you can see the speed is 113 mph up top.

Please view it and let me know your suggestions that may help improve my tune.

This is for 05 MR with the basics bold-ons:
tbe (test pipe), hallman mbc, K&N filter, HKS 272s, PTE 780cc, Walbro fuel pump on straight Mobil 91 gas. The boost is peak at 24 psi and tapped down to 20 as you'll see in the log.

I included the flash file so that those with similar mods can check it out. The car idle great, daily driving good, reasonable good at WOT (see log). All done by myself so don't worry about vendor issue or anything like that. Let share and gain knowledge. Please note that the zipped file was splitted into 2 parts so make sure to remove the file extension from the "91 oct-map.z01.zip" to "91 oct-map.z01" in order to unzip

Thank for looking and any suggestion.


UPDATED: Please look at my updated fuel map on page 2 for reference. I'm no longer using this map that you see here.

 

What the heck is going on with your fuel map?

 

the pull looks fine. Pull 1* @ 3000/240 load, and 3500/260load.
Fuel map is all over the place! Did you scale the injectors, or you avoiding that, by adjusting the fuel map?
You might wanna consider adding a 250 load column to your map, as youre at 250 load @ peak +. (less interpolation) take out 70 load and add 250.

 

hmmmmm....

me's confused.

what scaling are u using for your injectors?? we use PTE 780s alot...

cb

 

Get tuned by someone who knows what they're doing. Your fuel map looks like ***.

 

My injectors scaling is set as 522. The latency values are
4.69 3.504
7.03 2.184
9.38 1.320
11.72 0.840
14.06 0.528
16.41 0.350
18.68 0.240

What is wrong with my fuel map? I know it may not looks pretty as expected but I was paying most of my attention on the log when adjusting it.

So how is the so called "ideal" fueld map should be looked like?

 

I did just what you said before posting this and it fixed those knock.
thank for the suggestion. Now I'll have to read the load column scaling to do that.

 

It should look similar to stock in the way it flows, you are jumping all over the place w/ your fuel values.

 

Thanks! That make sense. So if it looked well on the data log but out of place in the map means the global scaling is not optimized?

 

Trust me! I'm one of the first who got the car tuned by someone suppose to "know" what they're doing and got burned out of my cash bad. I know not every one the same but I decided to learn the thing and help others who may need it.

 

I haven't had to scale 780's but my guess is that you should up the global scaling and then work on your STFT / LTFT's by dialing in latencies. Your map's target AFR don't need to match your wideband, it's just a value. You should attempt to adjust the map so it makes gradual transitions as the car moves through the rev range (RPM) and load range.

 

Thanks. Good info. I was jumping directly into tuning the WOT after minor adjusting the fuel scale value and injector latencies from some threads I read here. For the last 4 months, when I have the times, I logged and tuned the car trying to "precfecting" it. It's great now. Reasonable timings, very minimal knocks and the car pull all the way to 7800 RPMs. Daily driving great, idle good. However, I'll try the different approach or method from your suggestion so it maybe even better.

 

Its obvious, the injectors could be dialed in a lil better by the look of your fuel map. Like we have said, ur fuel map is all over the place. The values in your Fuel map are just values, not actuall AFR, but if you have the scaling/latencies dialed in, it should be very close to actuall AFR ~ -.5 difference.
The way you have it, it might give you the AFR in your logs that ur looking for, but the ecu has to do all kinds of work to keep it in range. Confirm what is in the injector scaling thread for your injectors, and maybe try that scaling/latency... not sure if your scaling/latencies from there...
And yes, you can tell if your scaling is off, just by the look of the map. It will look linear when your scaling and latencies are dialed in.

 

ur fuel map needs some redoing.

for some reason i cannot see your logs or get em off the website


feel free to PM me and i can have a look.

 

I have seen worse fuel tables!!!!!! If there was a comedy map section I would post a couple.
He'll get the his fuel sorted out with the suggestions others have made.