Just a note, at first turn off all tephra mods and only copy over the necessary fuel, timing and boost maps. If you copy ALL maps then you could cause other issues.

 

Thanks for the tip. Immob, inj scaling, maf scaling, boost limit, timing, target RPM idle (neutral/drive/ac), jdm map, and 2 bytes (for the new rom id) are the only things I have modified from stock that I'm copying over. Those should be okay, right?

 

If you are moving the MAF scaling because you have modified it then should be good. The 2 byte logic is your preference, I think the 1-byte load is the preferred method now.

 

Hey guys.. Just a quick question.. Why does 96260009 ROM does not have Knock Sensor Filter Map table?? Is this going to cause any problems?? Im looking at upgrading from 96260007..

 

That ROM took care of the CEL flash issue! Thanks Tephra!

Also, I retained the immobilizer, the process for 94170015 was the same as it is on the wiki for the other ROM (add XML to old ROM to get the immob hex address, add XML to enter the immob hex address in the new ROM, copy value from old to new, remove the XMLs so you don't screw it up on accident, and have a )

 

Sweet another successful convert!!

 

Only problem is I have no LTFTs, they're stuck at 0.1. Is this due to the rear o2? I tried setting the periphery to 0 and 1 and neither one works. What's the solution to that? I am going to read up more on WB02 controlled AFRs, but I don't know anything about it yet....

 

Give your LTFT's a bit more time to work. Check your STFT and front O2 sensor voltage. If they are moving then it just hasn't registered with your LTFT. Let your call idle for 20 minutes and see if they change.

 

What is youe MAF Hz reading at idle? If it is above 40Hz your LTFT Low won't adjust. MAF scaling is in order.

 

Over 2 hours of logs and it hasn't moved once. I do have changing values for sensor1, sensor2, and o2feedback, though.

Ah, I think you've got it. It barely reaches 38 a few times, but is almost always over 40 Hz. I wonder why the difference between this rom and the 94170015 though? MAF scaling is exactly the same, but trims were cycling on the USDM rom. I need to dig into this some more... thanks!

 

You should try to smooth the MAF signal to below 40Hz. I found that if you reduce air flow after the MAF creates the greatest effect. Also, there is a little rubber plug under the MAF. Removing the rubber exposes a phillips head screw. By turning out the screw you will see changes in MAF Hz value quite easily.

Depending on your intake tube the MAF can be rotated to smooth the flow as well. It is a PITA to find the "sweet spot" but the end result will be worth it.

Sorry to hyjack the thread.

Back on topic.....

Any luck in figuring out why 94170015 has severe knock issues?

 

Wow, hey Paul. Does this mean no more MAF scalings ?

 

You're using 96530006 instead of 94170015 ?

 

knock problems have so far been attributed to people using the "boost enhancement" crap that is included in 9417 xml's - but wrong...

 

Ha...I wish.

I know the scalings are the biggest problem to get a car to idle. Once cams and hard pipes are installed the stock Hz of about 20 jumps easily to 40+. From various tests I figure the switching point from low to mid occurs at about 40Hz. The goal is to get the MAF to read below it to get the LTFT Low to adjust. I have not found where LTFT high switches over. Mine won't change.

Several hours of tinkering and I have Revolver cams, HKS hard pipes, and an FP Green idleing great. Sounds like lope, lope, lope, lope. Everyone thinks my car has something wrong because it idles so hard. The joys of high lift cams. But I have no stalling issues at all. Some MAF scaling adjustment were necessary.

OK...so back on topic....

Might there be an issue with the 006 ROM vs the 015 when it comes to trim positions?

And what about the crazy knocking we are getting with the 015 after several flashes?