Pizzicato

Newly istalled chip for my KO4+FMIC+5BFPR
It seems to sputter or stutter under smooth acceleration but is fine at AWOT ?
WTF?

snwguy

I thought chip is designed to work with stock 1.8T , perhaps your mods are causing problems ?

Pizzicato

This GIAC Chip is specificly designed for a KO4+FMIC+5BFPR

xr4tic

check the long term fuel trim on block 032, and also watch the short term FT on block 033.

Spec for LTFT is +/- 10%, but ideally it should be as close to 0 as possibly. STFT should oscillate within +/- 10%. If under part throttle acceleration, you see it go over 10%, then you might have a hole in the fuel map. Negative % means rich, positive % means lean.

Also check your BPV. I have a Forge BPV, and it will flutter a little on low-boost acceleration.

Pizzicato

I got a program unit not finnished code
02 sensor code
battery code
After clearing the codes only the programing unit not finnished code came back !!

xr4tic

what are the actual DTC numbers?

Program unit not finished code sounds like a bad chip.

pointby

What year A4? If its a '97 you will need the OLD software program.

Pizzicato

was diagnosed,Right now its all running well !!