Drift Office Tune vs Visconti Tune
 

Introduction

So Bob over at Drift Office LLC and me decided to compare Visconti Tune, FA20Club Tune (was not able to load the tune because I did not get the most up to date tune, and the older tune was not loadable through the newer ecutek software), and the Drift Office tune for the Automatic BRZ. The AT tune from Drift Office is based on @brzranger 's tuned AT.

Setup

So here are the variables we tried to keep consistent across the two tunes

1. Each run was from a fresh flash, meaning the ECU was not given the chance to learn the new tune. So when I came in I reflashed the Visconti tune to keep it fair. Also given the time frame it was not reasonable to try and have the ecu learn after every flash.

2. We let the car idle for a few minutes after a new flash to let it adjust the cam timing.

3. A fan was blowing at the engine bay with the hood up.

4. My mods that can affect the dyno results are:
- Airraid Intake
- Motegi M125 wheels
- Works resonated AxleBack

5. Each pull was done at 4th gear, 3 times with the best runs compared


Results:

From a dyno standpoint I think Visconti and Drift Office Tune are neck to neck with the Drift Office tune slightly ahead. However these variances are negligible to daily driving and the occasional autoX and track days.

I decided to go with the Drift Office tune because it is a smoother curve from the dyno sheet.

Notes:

At the first few runs my AFR was not smooth and out of whack, which did not make sense since we did a shootout last year and my AFR was fine with the earlier tunes from FA20 and Visconti as well as having the Airraid intake. Upon further inspection it was because my exhaust was not equally flowing, the passenger side of my exhaust had more air flow than the driver side (to which I dunno why, maybe bad design?) We checked the AFR from ecutek and the numbers were what we expected coming from the ECU. The AFR you see is from the passenger side exhaust readings.

Honestly not seeing any significant difference here in regards to power and the AFR for visconti's tune seems slightly better on the high end

I'm a little bit confused by your statement. The graph shows the very slight advantage to Drift Office. I wouldn't trust those AFR's due to my exhaust (which is throwing off the sensor)

Are you gonna update with fa20 tune?

Well not sure how to be clearer :iono: peak horsepower is < 1 which is not significantly greater (definately cannot be felt) and may not even be statistically significant.In addition the curves are almost in line with each other for the most part. I would say they are equal in regards to power generated.

The differences between the two graphs may be within the margin of error for the dyno.

What i do see is the Drift Office AFR curve dipping below 12 above 6000 rpm. which may be a bit to lean for the car. If you dont trust your AFR however (not sure y?) then u can ignore the AFR's. The difference between the AFR curves however is more significantly different than the torque and power graphs IMHO

Would have been nice to have seen stock tune on graph as well. Waiting to see where the Drift Office tune comes in $$$ wise.

This x10. I've seen same tune, same car, same dyno vary by more power than the difference here. So these tunes can be considered identical, power wise.

Now, the AFR curve shows drift office being richer than 12 at high RPMS. It appears that Visconti's AFR curve is a tad flatter and more consistent throughout the entire RPM curve.

Also, that dip you notice at high RPMs on the drift office dyno is a bit concerning. Either you let off the gas or the ECU pulled timing from knock...

Someone please correct me if I'm wrong, but AFR is Air/Fuel. The HIGHER the number, the LEANER the mix (there is more air per fuel). the LOWER the number, The RICHER the mix (there is less air per fuel)... Right? If so, dipping below 12 means its richer, not leaner.

Sounds like your confused. :)

In any which case, this was supposed to be a fun 3 way 'shootout' but it turns out that FA20 club elected not to send the OP an updated calibration, why I'm not sure...

Regards,


Bob @ Drift-Office, LLC

Alas yes it was an error on my part. Lol
My apologies

But still I think u will agree the two tunes make basically the same power.

Sure, based on those two charts, that's pretty apparent.

Now that the OP has installed his stock intake back on, we'll see if we can't get FA20 club to send him an updated tune as well and then we'll shoot for yet another apples - to - apples comparison in the near future.

Cheers!


Bob @ Drift-Office, LLC

That's surprising, given the rave reviews of how fast FA20club responds to customer requests for tunes.

That's what I thought too...

FA20 has been dealing with sick kids......FYI....I'm sure he'll get it to ya as soon as he can