An in-depth talk about FL5 ECU tuning

[Vito.FL5]

Quick update:

Benn working overnight for the past 3 weeks lol. Adding all sorts of custom functions to the code, mostly for fun.

But soon will have map switching and a bunch of other features available

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[Jester04]

Quick update:

Benn working overnight for the past 3 weeks lol. Adding all sorts of custom functions to the code, mostly for fun.

But soon will have map switching and a bunch of other features available

You are doing the lords work @Vito.FL5

I can’t wait for live tuning its so cumbersome to flash on the dyno.

 

[Vito.FL5]

I'm practicing reverse engineering because I have A LOT of requests for this on Porsche and other platforms, and 991.2 use the same processor so not very different even being a continental ECU.

I'ts going great, I figured a lot of stuff out, and it feels good not to hit a dead end when you cant fix something using what the oem software can do.

Apart from all the usual multimap, rolling antilag and all, I want to figure out how to control port injection with the stock ECU.

Doing the math and splitting the fuel mass between Di and MPI is easy, just need to figure out how to use a free memory location to put injection ms there, then send it to the can tranceiver, then picking it up on the can bus later.

easier said than done but 300% doable.

 

[Vito.FL5]

Now some cool stuff lol.

Got the time to finish the launch control + rolling antilag tables.

it works 2 ways:

launch:
R MODE ON
+80% throttle
+80% clutch
-5mph speed

OR

Rolling antilag
R MODE ON
Cruise control button pressed

Its fun

 

[Jester04]

Now some cool stuff lol.

Got the time to finish the launch control + rolling antilag tables.

it works 2 ways:

launch:
R MODE ON
+80% throttle
+80% clutch
-5mph speed

OR

Rolling antilag
R MODE ON
Cruise control button pressed

Its fun

Very cool!

 

[ForeverCar]

Rolling antilag is cool stuff. Be kind to your cats though (if you run one).

 

[Vito.FL5]

I dont. But I have many failsafes just to save me from myself lol. One of them being egt

 

[ThreeD]

Still following your thread with a lot of interest, you have so much depth of knowledge and fun to see you playing with the electronic systems with deft.

I have been driving the car stock and have been getting a bit bored. Engine for me is "fine" but wish the chassis was more playful. Would be fun to have an e-brake to slide it around and back it into corners.

If you were thinking about adding on an e-brake do you think it would be possible to modify electronic systems to use the e-brake already present as an electronic "hydro"?

 

[Vito.FL5]

Still following your thread with a lot of interest, you have so much depth of knowledge and fun to see you playing with the electronic systems with deft.

I have been driving the car stock and have been getting a bit bored. Engine for me is "fine" but wish the chassis was more playful. Would be fun to have an e-brake to slide it around and back it into corners.

If you were thinking about adding on an e-brake do you think it would be possible to modify electronic systems to use the e-brake already present as an electronic "hydro"?

that never crossed my mind lol.

btw, testing flatshift last night and setting some base 100-200kph times on a friend´s car

this tune is our base for trackdays, will probably push 30psi on a street tune to see if it can get to mid to high 7´s

Also maybe 100rpm more and we could do it with 1 shift only

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