iE TrueFlex Sensor Kit For Audi B9 S4, S5, SQ5

2019 Audi S5 B9

Stage 1+ Flex tune

Stage 2 TCU

Great integration with app. Not sure if it **** dyno effect but it seems to deliver more consistent performance when WOT at all the various speeds.

I am NOT a gearhead, most ive done is install intakes and oil changes. For my skill level I wish I would have been patient for a pro to be available but I was able to do it myself!

Some tips, may be specific to my car.

I HIGHLY recommend getting a wiper arm removal tool. The kind that needs a wrench ti apply down pressure. I doubt the hand twist ones will do the job. You dont need it but it is a PITA to do it without the tool.

My car has a driver side hidden compartment in the kick stand area. I was unavle to fully remove it because there are cables clipped on the side and back. I just moved it around to see around the firewall area

Regarding the fuse in the dead pedal area, as someone else said you will need some snips to trim the plastic moulding surrounding it so it can sit flush.

The screws on the clamps used for the fuel line is a tad small, I struggled mightily getting the clamp to sit over the gas line. once its on its secured.

The evu cable cutting was nerve racking felt like I was defusing a bomb lol. For b9 my cables were orange and green. They were twisted together like network cables so made it easy to identify which ones to get.

Finally support is outstanding as usual.

Installation went very smoothly. Had a TPMS light after install which was cleared with OBDeleven. Runs strong as expected. Customer svc/tech support top notch as has always been the case

So nice to have this option. I honestly think the tune runs better now through the FlexFuel programming. I am HPFP, FMIC, DP, intake so I think IE calls that 2+. Update to app was seamless as always.

Couple of install notes for B9 S4: when adding the two fuses that go into the fuse jumper, these are extremely stiff. The fuse jumper dose not fit well in the dead pedal fuse area and make sure you trim fuse box side to help this process accounting for wire leadout. When tying into the main harness, take your time. In retrospect I would have used a high quality vampire connector. Once you cut the harness wire, it is under tension, and therefore will no longer be long enough to reconnect and then you will be soldering extensions on.