domyz

iTrader: (6)

About setting up boost to get the fastest spool possible, I really want to use the "WGDC 100% under load" table but it's really annoying for drivability and throttle modulation. The car boost way too much at part throttle when using this table. If you always used WGDC 100% under 200load i.e. , try zeroing it you will understand what is good part throttle drivability.

The issue is that using this table prevents the TPS WGDC% correction to work as intended. The best of both world would be if the TPS WGDC% would be the master table applied after ALL other corrections. I would pay some disassembly geek if he can do a ROM mod like this.

It would be 40xtimes better for tuning and performance if going WOT and at 100% WGDC in every possible situtation, but only when your TPS WGDC table value is allowing it.

jedibow

iTrader: (1)

Domyz I see what you are saying, but I just set my WGDC 100% below load lower than others and then the base WGDC tables take over, might be worth a shot for you?

domyz

iTrader: (6)

I don't think you get it sorry: I already set this table at zero, for the exact reason I explained in the opening post

jedibow

iTrader: (1)

Have you tuned the WGDC upward correction limit vs. TPS table?

domyz

iTrader: (6)

I leave it at zero like almost everyone to avoid overshoot when spooling

jedibow

iTrader: (1)

I don't have an overshoot issue with mine? But I have the WGDC tables set lower than most people so that I cannot overshoot... I have my max WGDC adder table set to progressively increase after 60% throttle percentage, as well as my throttle cable correctly adjusted (mechanically) and I have no issues what so ever with my throttle or boost response? However like all things automotive it is set to where I like it so, to you I may have issues LOL

George

charlie.tunah

iTrader: (7)

So Im assuming the way it works is:

WGDC under load -> TPS WGDC -> WGDC Map

Whereas it doesnt matter what your WGDC map or TPS WGDC is set to, it will run 100% WGDC until over the load threshold defined in the WGDC under load table. Then applies the TPS % to the WGDC map. Although Id think that most of the time if you've surpassed the WGDC under load table, youre already at 100% tps so that table becomes useless.


You want:
TPS WGDC -> WGDC under load -> WGDC map

Whereas the TPS WGDC table will always have an affect on the other maps.


Ive battled this as well, seeking smooth part throttle for autocross. Ive got my 100% WGDC under load table at 100 (basically zeroed out). And a soft TPS % table where it doesnt use 100% of the WGDC table until around 80% TPS. And 0% TPS = 0% WGDC.

Ive also got my upwards correction zeroed out to alleviate overshoot. The only way to full utilize that table is with a desired PSI table that matches what your turbo is capable of. Mine is set to my peak boost value from 4k rpm all the way down.


If this was an easy fix, Im definitely interested too.

domyz

iTrader: (6)

Yes this will help for sure, but even with a desired PSI table set at what the turbo is capable, you are still not at 100%WGDC on transitions. So between spring opening pressure (about 12psi) and full boost, there is exhaust loss in the wastegate (not a lot but still some power loss)