gemellocattivo.com

Which means "Evil Twin". Lets see your projects where you change boring into fun or create the fun from scratch.
It is currently Fri Sep 19, 2025 7:10 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 1670 posts ]  Go to page Previous  1 ... 43, 44, 45, 46, 47, 48, 49 ... 167  Next
Author Message
PostPosted: Tue Apr 07, 2015 1:33 pm 
Offline

Joined: Thu Jan 01, 2015 6:47 pm
Posts: 4687
When I was laying out my pin counts and used up all the analog inputs the ECU has, I was forgetting that DWB uses 2 sensors on the pedal and throttle so I'm 2 short :(

The knock pins would work and I was thinking if I could use them to measure cylinder O2 but now that it looks like that won't work I'd like to save the pins for future knock sensors.

The ECU has 6 temp inputs of which I need 3 so 3 are available but they have a 1k ohm pull-up resistor on them making them less than ideal for voltage meaurements.......hmmmmm.......I spent some time looking the ECU board over under a microscope today and I'm pretty sure I've found the pull-up resistors and #5&6 are off by themselves and should easy to pop off the board which would convert them back to normal analog inputs.

Another possible option is to use custom firmware to read the WBO2 over the serial connection and the FW guy is looking into that for me......so 1 way of the other I'm getting 2 more analog inputs :)


Attachments:
2015-04-04 006.JPG
2015-04-04 006.JPG [ 311.47 KiB | Viewed 9919 times ]
Top
 Profile Send private message  
 
PostPosted: Tue Apr 07, 2015 4:21 pm 
Offline

Joined: Fri Jan 02, 2015 6:42 pm
Posts: 104
When I grow up I will understand electronics and ECUs


Top
 Profile Send private message  
 
PostPosted: Tue Apr 07, 2015 7:53 pm 
Offline
User avatar

Joined: Fri Jan 02, 2015 1:12 pm
Posts: 172
a1exander wrote:
When I grow up I will understand electronics and ECUs



:lol:


Top
 Profile Send private message  
 
PostPosted: Thu Apr 09, 2015 6:57 am 
Offline

Joined: Thu Jan 01, 2015 6:47 pm
Posts: 4687
Pizzaman wrote:
a1exander wrote:
When I grow up I will understand electronics and ECUs



:lol:


Me too......

I have 6 AT(Analog Temp) inputs and only found 6 1k resistors on the whole board so I'm pretty confident and decided to go ahead and pop 2 resistors off the very expensive ECU circuit board. Those parts are TINY! I used 2 soldering irons as tweezers to heat and lift so as not to damage anything and it seems to work nicely....so AT 5&6 should now be effectively AV (AnalogVolt) 18&19 and I'm good to go.....I think.


Attachments:
AT.JPG
AT.JPG [ 39.9 KiB | Viewed 9879 times ]
AV.JPG
AV.JPG [ 36.8 KiB | Viewed 9879 times ]
2015-04-08 001.JPG
2015-04-08 001.JPG [ 212.89 KiB | Viewed 9879 times ]
Top
 Profile Send private message  
 
PostPosted: Thu Apr 09, 2015 7:12 am 
Offline

Joined: Thu Jan 01, 2015 6:47 pm
Posts: 4687
Yesterday the 2 quieter mufflers I ordered WAY back finally arrived and they are just beautiful and WAY nicer than I was expecting for under $120 each. They're made to order in Alabama and appearently one of the late winter stores froze the shop so they were backed up. These are the old school perforated core design but heavy gauge SS so they should last way longer than my lifetime.

http://www.stainlesssteelmufflers.com/350mufflers.htm

The plan is to put these in parallel (notice the ECU speak :) ) with the loud borla racing muffler and ECU controlled valves on the borlas so at about the 300hp point so all normal driving is normal noise.

These are their "muffle car" design which are supposed to have decent rumble at idle but quite down nicely by 2000 or so. I went with 2.25" OD which should mean they are good for ....300hp-350hp maybe. Sizing is kind of important because it's the flow that does the muffling...too big and they'll be loud, too small and they whistle and choke the engine, but I can fix that by by opening the bypass valves early so better small than big I think.

So, as soon as I finish the brakes I think I'm ready to get back to exhaust.


Attachments:
2015-04-08 002.JPG
2015-04-08 002.JPG [ 223.05 KiB | Viewed 9881 times ]
Top
 Profile Send private message  
 
PostPosted: Thu Apr 09, 2015 9:38 am 
Offline

Joined: Sat Jan 03, 2015 5:40 am
Posts: 208
mk e wrote:

I have 6 AT(Analog Temp) inputs and only found 6 1k resistors on the whole board so I'm pretty confident and decided to go ahead and pop 2 resistors off the very expensive ECU circuit board. Those parts are TINY! I used 2 soldering irons as tweezers to heat and lift so as not to damage anything and it seems to work nicely....so AT 5&6 should now be effectively AV (AnalogVolt) 18&19 and I'm good to go.....I think.


Mark, when/if you ever sell this car, you ought to consider offering a lifetime consulting contract for the new owner. He's probably going to need it....... :)

I remember the old saying: "man designed it, man built it, man can fix it". But I think all bets are off on this one unless you're writing one helluva detailed journal, and making as built drawings, schematics, bills of materials with suppliers, etc.


Top
 Profile Send private message  
 
PostPosted: Thu Apr 09, 2015 10:24 am 
Offline

Joined: Fri Jan 16, 2015 12:23 am
Posts: 157
cribbj wrote:
mk e wrote:

IMark, when/if you ever sell this car, you ought to consider offering a lifetime consulting contract for the new owner. He's probably going to need it....... :)

I remember the old saying: "man designed it, man built it, man can fix it". But I think all bets are off on this one unless you're writing one helluva detailed journal, and making as built drawings, schematics, bills of materials with suppliers, etc.


It's already documented online with pics included. The new owner just needs to subscribe to fchat, flife and here.


Top
 Profile Send private message  
 
PostPosted: Thu Apr 09, 2015 12:06 pm 
Offline

Joined: Thu Jan 01, 2015 6:47 pm
Posts: 4687
kkrace wrote:
cribbj wrote:

IMark, when/if you ever sell this car, you ought to consider offering a lifetime consulting contract for the new owner. He's probably going to need it....... :)

I remember the old saying: "man designed it, man built it, man can fix it". But I think all bets are off on this one unless you're writing one helluva detailed journal, and making as built drawings, schematics, bills of materials with suppliers, etc.


It's already documented online with pics included. The new owner just needs to subscribe to fchat, flife and here.



LOL...I need to finish getting everything moved here


Top
 Profile Send private message  
 
PostPosted: Thu Apr 09, 2015 9:10 pm 
Offline

Joined: Thu Jan 01, 2015 6:47 pm
Posts: 4687
Nothing really photo worthy tonight....but there are brake lines front the parking master to the rear wheels. Getting close.


Top
 Profile Send private message  
 
PostPosted: Sat Apr 11, 2015 8:27 pm 
Offline

Joined: Thu Jan 01, 2015 6:47 pm
Posts: 4687
Still nothing photo worthy but Lana ran to the store and I ran to the shop and got a line run from the parking master to the front. Tomorrow on car day I'll master connected, bled and the brakes should work....hopefully.

In other news I realized it should be possible to use the o5e code base to create an adapter to force the motec to read my O2 sensors. The coding is a bit above my level but I have a tentative yes from someone who should be able to do it. That would be nice. I tried to shame motec into just adding an analog signal O2 option but I think I failed so a $25 adapter is the next best thing I guess and WAY better than the $844 motec solution.


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1670 posts ]  Go to page Previous  1 ... 43, 44, 45, 46, 47, 48, 49 ... 167  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 361 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group