First Data Log with the 13T's, Got questions.

[Jasbo]

Originally Posted by lawdogg

What is your SAFC set at?

Throttle is 30% low - 50% high

-33, -33, -30 remaining across the board High
-35, -40, -33 remaining across th board Low

-33 being the correction for the 550's, but its still running too rich.. Ive trimmed it out some abd it seems to be running a little better but I havent been able to log again yet.

I just added a muffler inline to quiet this mess down and now im feeling a good bit of back pressure slowing things down.. I need to do another log tonight and see how things stand.. I'll e-mail that one to you Chris when I get itmoved over to my home PC.

Maybe I should just turn up the boost some and see how the added air leans things out.

Now the injector duty cycle is something else... Isnt that what the ECU thinks is going on for the STOCK injectors? Therefore it wouldnt apply to the 550's?

[lawdogg]

Originally Posted by Jasbo

Throttle is 30% low - 50% high

-33, -33, -30 remaining across the board High
-35, -40, -33 remaining across th board Low

-33 being the correction for the 550's, but its still running too rich.. Ive trimmed it out some abd it seems to be running a little better but I havent been able to log again yet.

I just added a muffler inline to quiet this mess down and now im feeling a good bit of back pressure slowing things down.. I need to do another log tonight and see how things stand.. I'll e-mail that one to you Chris when I get itmoved over to my home PC.

Maybe I should just turn up the boost some and see how the added air leans things out.

Now the injector duty cycle is something else... Isnt that what the ECU thinks is going on for the STOCK injectors? Therefore it wouldnt apply to the 550's?

That seems right to me. Are you sure you're looking at your o2 voltage and not your IDCs?

A 100% IDC means the injector stays open one full stroke (I believe). So you will get more fuel if a higher flowrate injector stays open the same amount of time. afaik.

[Jasbo]

Originally Posted by lawdogg

That seems right to me. Are you sure you're looking at your o2 voltage and not your IDCs?

A 100% IDC means the injector stays open one full stroke (I believe). So you will get more fuel if a higher flow rate injector stays open the same amount of time. afaik.

IDC = the amount of time required for the injector to start opening... sustain open for a period, and the amount of time for the injector to fully close.

these 550's shouldnt be anywhere near what the logger was reporting but then i realized the logger is reading what the ECU "thinks" is its doing based on air flow from the mass air. Its reporting IDC's based on the stock injector size not based on the modified signal sent from the SAFC. If this were the case, they would be 33% less based on the correction shown for the given RPM. Im betting the true IDC's are around 70% peak @ 13psi.

[lawdogg]

Originally Posted by Jasbo

IDC = the amount of time required for the injector to start opening... sustain open for a period, and the amount of time for the injector to fully close.

these 550's shouldnt be anywhere near what the logger was reporting but then i realized the logger is reading what the ECU "thinks" is its doing based on air flow from the mass air. Its reporting IDC's based on the stock injector size not based on the modified signal sent from the SAFC. If this were the case, they would be 33% less based on the correction shown for the given RPM. Im betting the true IDC's are around 70% peak @ 13psi.

http://stealth316.com/2-calc-idc.htm check that out.

[Jasbo]

Originally Posted by lawdogg

http://stealth316.com/2-calc-idc.htm check that out.

ok this is good stuff... my peak IDC's were 59% according to Stealth316. That sounds much better =)

[lawdogg]

Originally Posted by Jasbo

ok this is good stuff... my peak IDC's were 59% according to Stealth316. That sounds much better =)

... but it still doesn't fix your rich rich rich o2 voltage.

Do you have a pressure tester?

[Jasbo]

Originally Posted by lawdogg

... but it still doesn't fix your rich rich rich o2 voltage.

Do you have a pressure tester?

Nope... no pressure tester.. Im going to build one though here sometime in the near future.

ok I just Logged a new run tonight.. O2's are down to .95 and .97v front and rear. The car pulls solid through 6500 rpms where I let out of it and AFTER I let out, There were 4 counts of knock. Previous run before that was identical and counted 2 counts of knock after I let out as well. Boost was approx 11.5 psi or so.

Im still a little confused of why my timing looks like it does.. I figured it would atleast show a steady increase in advance or a jump and remain steady. Instead it seems to be a little wavy but im not used to looking at timing like this.

At 6500 rpms, I see 35 degrees timing. As the RPMs rise starting at 2000, I See the timing advance from 41 degrees down to 27 degrees at around 4300 rpms... after that it retards back to 35 degrees by the time I get to 6500.

Does this sound normal?

[DJAuggie]

Originally Posted by RobBeck

I would go for .88v-.92v unless you are getting excessive knock then go for .94v. My old WB02 was showing pig rich .94v or above.

NB02 suck.

.88 would be 13+AFR on my car.

Anyhow, OP, just post a 3rd gear datalog instead of trying to explain the numeric values.

[Jasbo]

ok heres a couple logs...

http://members.cox.net/rudasill1/Jason%20VR4%20log%202.session
http://members.cox.net/rudasill1/Jas...og%202.session

Ofcourse you will need the HHH Software to view these...

I noticed in the 2ns log there are up to 26 counts of knock in a pull. I didnt have enough room at the time to pull out all of 3rd gear...

ill try to get a full pull tomorrow.

Jason

[DJAuggie]

Convert that file to a readable source such as CSV.