Every wonder why your Max WGDC only reads 90.2%?

crystal_Imprezav · 02-10-2007, 12:56 PM

This has bugged me for long enough so I spent the day look into why it does this. There is code in the ECU that limits the max WGDC to 90%. I was able to find it today and will be testing it out shortly. Here is an example and some screen shots: It should be noted that the ECU will not take more than 99.5% inputed into this table...

crystal_Imprezav · 02-10-2007, 01:32 PM

Ok here are the results, and they were quite successful if I might add. The only problem I had was getting it to use enough WGDC since its about 30* outside and my compensation tables kept pulling a ton of WG. The only way I got it to show any results was to park it still and let the IAT temps rise then hit the throttle. Check it out:

daemon · 02-10-2007, 04:27 PM

I assume they set that to help protect the solenoid from frying.

R4ND0M_AX3 · 02-10-2007, 07:09 PM

Quote:

Originally Posted by daemon

I assume they set that to help protect the solenoid from frying.

+1
I think solenoids like high duty cycles.

crystal_Imprezav · 02-10-2007, 11:12 PM

Personally I run an aftermarket EBCS so I have no worries about frying it. Honestly me and wolf have been arguing this for a good time, and I am happy to pick up the extra 10% WGDC for an extra 1psi at redline. Oh yea an on some 16bit ecu's I have seen 100% WGDC's before.

WolfPlayer · 02-11-2007, 10:48 AM

^ Agreed if you are a DIY guy. I have no worries about frying my GM BCS. I can pick up a new one locally for under $20. So, if it fries, so be it. However, if I can hold more at redline - so be it

Good catch on the WGDC. I guess you are liking IDA Pro

t

flatthump · 02-11-2007, 11:01 AM

Oh neato...thanks.

crystal_Imprezav · 02-11-2007, 11:32 AM

Quote:

Originally Posted by WolfPlayer

^ Agreed if you are a DIY guy. I have no worries about frying my GM BCS. I can pick up a new one locally for under $20. So, if it fries, so be it. However, if I can hold more at redline - so be it

Good catch on the WGDC. I guess you are liking IDA Pro

t

Haha yea, I am finally getting the hang of it. Let me know if you want the xml for that. I like being able to run another 10% wgdc muhaha. When ru going to start your master hacking skills!

daemon · 02-11-2007, 11:59 AM

I certainly wasn't saying one shouldn't do it, just stating a general note of caution for anyone that wasn't aware of a potential issue.

06stiman · 02-11-2007, 07:58 PM

So I take it that this "primary wastegate maximum" is not a modifiable parameter using Cobb StreetTuner?

crystal_Imprezav · 02-12-2007, 07:38 AM

Quote:

Originally Posted by 06stiman

So I take it that this "primary wastegate maximum" is not a modifiable parameter using Cobb StreetTuner?

Nope, neither is this... I will be testing it out as soon as I can get my hands on a 3 bar MAP:

lackskill · 02-12-2007, 08:28 AM

Quote:

Originally Posted by crystal_Imprezav

Nope, neither is this... I will be testing it out as soon as I can get my hands on a 3 bar MAP:

t3h ub3r l33t h4x0r! Keep up the good work man.

TheMadScientist · 02-12-2007, 08:48 AM

Quote:

Originally Posted by crystal_Imprezav

Nope, neither is this... I will be testing it out as soon as I can get my hands on a 3 bar MAP:

Ohh snap.
Been waiting for this for a while now. 3bar MAP here we come.

TMS

crystal_Imprezav · 02-12-2007, 08:58 AM

I just need to figure out the conversion for these numbers... Any ideas as to whether or not it would follow the same logic as the UTEC?

TheMadScientist · 02-12-2007, 09:04 AM

I wouldn't count on it. It might, but I would be VERY suprised if it did.

TMS

02-10-2007, 12:56 PM	#1
crystal_Imprezav Spec C Club Car: Slow 05 STi Fav Mod: Loping Idle Location: Chewy's Garage Posts: 1,878 Join Date: Mar 2005 Trader Rating: (12)	Every wonder why your Max WGDC only reads 90.2%? This has bugged me for long enough so I spent the day look into why it does this. There is code in the ECU that limits the max WGDC to 90%. I was able to find it today and will be testing it out shortly. Here is an example and some screen shots: It should be noted that the ECU will not take more than 99.5% inputed into this table... This ad is not endorsed by this member. Please register or login to hide this ad.

02-10-2007, 11:12 PM	#5
crystal_Imprezav Spec C Club Car: Slow 05 STi Fav Mod: Loping Idle Location: Chewy's Garage Posts: 1,878 Join Date: Mar 2005 Trader Rating: (12)	Personally I run an aftermarket EBCS so I have no worries about frying it. Honestly me and wolf have been arguing this for a good time, and I am happy to pick up the extra 10% WGDC for an extra 1psi at redline. Oh yea an on some 16bit ecu's I have seen 100% WGDC's before. Last edited by crystal_Imprezav : 02-11-2007 at 10:42 AM.

02-12-2007, 09:04 AM	#15
TheMadScientist Professional STI Racer Posts: 601 Join Date: Apr 2004 Trader Rating: (0)	I wouldn't count on it. It might, but I would be VERY suprised if it did. TMS This ad is not endorsed by this member. Please register or login to hide this ad.

02-10-2007, 01:32 PM	#2
crystal_Imprezav Spec C Club Car: Slow 05 STi Fav Mod: Loping Idle Location: Chewy's Garage Posts: 1,878 Join Date: Mar 2005 Trader Rating: (12)	Ok here are the results, and they were quite successful if I might add. The only problem I had was getting it to use enough WGDC since its about 30* outside and my compensation tables kept pulling a ton of WG. The only way I got it to show any results was to park it still and let the IAT temps rise then hit the throttle. Check it out:

02-10-2007, 04:27 PM	#3
daemon The Next Petter Solberg Car: 2004 STi Location: Florida Posts: 865 Join Date: Feb 2004 Trader Rating: (0)	I assume they set that to help protect the solenoid from frying.

02-11-2007, 10:48 AM	#6
WolfPlayer Moderator & ECU Tech Car: 05 CGM STI Fav Mod: mo boostaz Location: Fredneck, MD Posts: 3,703 Join Date: Jun 2004 Trader Rating: (6)	^ Agreed if you are a DIY guy. I have no worries about frying my GM BCS. I can pick up a new one locally for under $20. So, if it fries, so be it. However, if I can hold more at redline - so be it Good catch on the WGDC. I guess you are liking IDA Pro t

02-11-2007, 11:01 AM	#7
flatthump Enginerd Car: The Spaze Mobile Fav Mod: Tuning Location: South O.C., Ca Posts: 13,020 Join Date: Jan 2006 Trader Rating: (5)	Oh neato...thanks.

02-11-2007, 11:59 AM	#9
daemon The Next Petter Solberg Car: 2004 STi Location: Florida Posts: 865 Join Date: Feb 2004 Trader Rating: (0)	I certainly wasn't saying one shouldn't do it, just stating a general note of caution for anyone that wasn't aware of a potential issue.

02-11-2007, 07:58 PM	#10
06stiman Senior STI Driver Car: 06 Evo IX SE Location: Southern CA Posts: 330 Join Date: Jan 2006 Trader Rating: (0)	So I take it that this "primary wastegate maximum" is not a modifiable parameter using Cobb StreetTuner?

02-12-2007, 08:58 AM	#14
crystal_Imprezav Spec C Club Car: Slow 05 STi Fav Mod: Loping Idle Location: Chewy's Garage Posts: 1,878 Join Date: Mar 2005 Trader Rating: (12)	I just need to figure out the conversion for these numbers... Any ideas as to whether or not it would follow the same logic as the UTEC?