recommendations? 7747 help

[Zefyr]

This is what I have so far. Truck has been thru a lot lately, but I'll spare the details for now. What I have is a 355 SBC with LT1 roller cam, 90lb @13psi injectors, 454 TBI, early 80's Z28 Fbody 4bbl intake, Z28 exhaust manifolds, Dart sportsman II heads, 1.6 roller rockers, and 747 TBI. Looking for advice with my code, this is a street/offroad truck. It is an '89 S10 blazer 4x4 with 700R4, NP231 Tcase, 3.73 axles, sitting on 31"s right now. After doing a few rough tunes and fixing a few things I can't figure out why it is backfiring thru the intake when making rapid throttle increases. I have attached a short log as well as my bin, I started with AKAJ code as it was what I had available that seemed closest. Any and all input is welcomed. I am also curious as to why in tunerpro the 'spark advance from hack' seems to act as a counter between 0 -100. I am pretty concerned seeing advance above 50 and up to 100.

[EagleMark]

AKAJ was superceeded to AMUR. That said for most 1227747 I use ADSU for auto trans.

I am also curious as to why in tunerpro the 'spark advance from hack' seems to act as a counter between 0 -100. I am pretty concerned seeing advance above 50 and up to 100.

Until you apply the hack to the bin file and use it your looking at O2 cross counts.

Open TunerPRo and in Parameter Tree choose category, Open the Hack folder and apply BPW and Spark Advance hacks. Burn new chips and data will be there. These hacks take place of Prom ID and O2 cross counts in Data Stream. Do not use TPS% unless you are tracking something because it stops knock from working.

After doing a few rough tunes and fixing a few things I can't figure out why it is backfiring thru the intake when making rapid throttle increases.

Need way more AE, sometimes double or more then stock with built engines. AE - TPS PW is short term and AE - MAP Long term.

Take a look at this thread.
http://www.gearhead-efi.com/Fuel-Inj...odified-engine

[EagleMark]

Not much in tat one log I looked at is going to help with all those error codes set.

[34blazer]

"To datalog Spark Advance to data stream change 00BA to 0067. You must also use associated ADX file to veiw Spark Advance: $42-1227747-V4.adx
Thanks to gregs78cam at GearHead-EFI.com
This hac takes place of O2 cross counts in data stream!

Thanks to RBob:
http://www.thirdgen.org/techboard/tbi/210908-tuning-issue.html"


At what address? it doesnt say?

makes sense that the hack guage counts up though.

*edit* nevermind, duh. I seem to always answer my own question LOL

[EagleMark]

Pretty cool, don't need hex address, the parameter is the hex address! It's there if you want to know, right click and Edit XDF.

[34blazer]

Pretty cool, don't need hex address, the parameter is the hex address! It's there if you want to know, right click and Edit XDF.

yeah I saw that right after I posted the question LMAO. also, where is the error codes in this adx? been awhile since ive messed with $42 and this adx is new to me.

[EagleMark]

Item Lists and you have four choices, one is Error Codes.