P0335 code

[wcs]

Yes.

Start reading about 5 posts back

[Xandroxs]

Alright so i let the car sit overnight and it's cold in the garage (70F) and in key on mode it's still setting P0335 the same as before.

Just tried flashing back to my initial "new" tune with only dwell changed. And it is NOT setting the P0335 code.

So I've got 2 tunes where one is just further modified compared to the begining tune and the later tune has a permanent P0335 set.

So as an experiment, I've done the following:

My tune generated with the "new" button and only dwell changed, will call this T0. It does NOT set P0335
I took T0 and then changed AFR, MAF and idle. I'll call this T1. This tune DOES set a permanent P0335 (but drives fine)

1) So now I've taken T1 and copied all values back to T0 values and flashed it to see if it's a table value doing it or just the general tune file when it gets saved multiple times (perhaps some hidden bits are being changed: NO p0335

2) Take T0 and copy just AFR tables 1 and 2 from T1: No P0335

3) Take this modified T0 and copy T1's ignition timing table over: No P0335

4) Take this modified T0 and copy T1's maf calibration: Sets P0335 that i can't clear

5) Take this modified T0, undo the MAF changed and copy T1's idle tables (all of them): No P0335

6) So since this appears to stem from the MAF table being modified, i tried copying in the values from my T1 tune, but left the 2 corners unmodified (i.e. left first and last cell as stock values and copies the guts): No P0335

7) This is weird. So let's try modifying the first cell (the last cell was same as stock already. Never touched it in T1). So i rolled the MAF table back to stock and changed only the first cell to T1's value (slightly higher than stock) but left all other cells in the table stock: Sets P0335 that i can't clear

8) Last test, i take the T1 tune, and only change the first cell of the MAF cal back to stock values but leave all my other modifications: No P0335


So it appears that this issue stems from only the FIRST cell in the MAF calibration table.

So the work around for S1 guys: when tuning the MAF curve, DO NOT MODIFY THE FIRST CELL from stock value, which for me is 0.2574.

Do you mind sharing a screenshot of how the cells look on your MAF curve?

[wcs]

Do you mind sharing a screenshot of how the cells look on your MAF curve?

I know you were asking @jlvaldez for a response but it doesn't look like they have been active since July 2022 ...
So FWIW here is a screen shot of mine, incase they don't respond.

image_2024-01-16_073039482.png (15.58 KiB) Viewed 307794 times

image_2024-01-16_073142529.png (12.88 KiB) Viewed 307794 times

image_2024-01-16_073812139.png (22.16 KiB) Viewed 307793 times

[Monstermills]

Hey I’m back! I have been running the tune with the updated map now for the last two years. Everything is smooth. Guys please keep in mind for future, if you ever have any vac leaks or problems that have been fixed with ignition always do a full reset with the 20 brake stomp method and clear fuel trims by disconnecting battery and killing the system. I fixed a vac leak and then didn’t reset my fuel trims, it was running too rich and causing a slight misfire as I ran high rpm. Always do a reset anytime anything is fixed! Hope this helps! Keep in mind it takes some time to relearn at startup, being a series 1 I also had to reset the AC function so that the ac would properly work too!

[Sparkyroxem]

Hi,
By any chance can you have your tune download able I'm having the same issue and did every kind of servicing ie. Changing the crank sensor cleaning the oem maf and pressing the pedal 20x times.

Thank you!

[Cycasm_Strife]

This is confirmed to work on 12/12/24. I set the parameters to the ones provided on the chart posted above for the first two MAF sensor configurations. I also did the 20 foot brake stomp after the flash.
Thank you all for the solution to the pesky p0335 code. (I did clean it before and still got the code) So for me it was the MAF triggering it.

2006 Shinka (trim) Black

[Nor10]

Does anyone know if there is a freely downloadable tune that fixes this issue? I am constantly getting po335 with the 1.14 tune for revi intake, full exhaust, bhr coils. I dont have the ability to change on my own.

[mAto424]

Does anyone know if there is a freely downloadable tune that fixes this issue? I am constantly getting po335 with the 1.14 tune for revi intake, full exhaust, bhr coils. I dont have the ability to change on my own.

So you have a lite version of VT which does not allow you to change those MAF calibrations?

[Nor10]

That’s correct.