Shuiend tries built motor #4, lets see how I break this one - Page 29 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Build Threads Building a motor? Post the progress here.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-29-2011, 01:44 PM   #561
mkturbo.com
Thread Starter
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,718
Total Cats: 1,086
Default

Quote:
Originally Posted by TurboTim View Post
What's those jagged spikes/drops in the duty cycle/pulse width?
The AFR changes a little bit. Goes from 11.5:1AFR to 12.1AFR briefly and that caused the spikes. The tune still needs a lot of time spent on it.
shuiend is online now   Reply With Quote
Old 03-29-2011, 02:18 PM   #562
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,458
Total Cats: 244
Default

Soo it's closed loop feedback that's making the changes?

I'm scared to run closed loop at WOT. I did it once and got something similar to your spikes but more violent, fortunately I let off before any damage.
TurboTim is offline   Reply With Quote
Old 03-29-2011, 02:19 PM   #563
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,510
Total Cats: 1,710
Default

closed loop should be off in boost...
Braineack is offline   Reply With Quote
Old 03-29-2011, 02:20 PM   #564
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,458
Total Cats: 244
Default

I'll tend to agree...Larz?? Something's causing those injector pulse widths to change.
TurboTim is offline   Reply With Quote
Old 03-29-2011, 02:26 PM   #565
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,008
Total Cats: 398
Default

those pulsewidth block changes are accel enrichment. raise the thresholds for MAP and TPS sensitivity.

incidentally, I love running closed loop in boost. y'all too paranoid.
y8s is offline   Reply With Quote
Old 03-29-2011, 03:13 PM   #566
mkturbo.com
Thread Starter
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,718
Total Cats: 1,086
Default

I really think it has to do with how the 4 fuel cells that it is passing through at those points are tuned. Right now they are really rough and that is causing it to go slightly lean. Below is what my fuel table currently looks like. The 4 boxes that are grey are where it is when those spikes occure. I think the one that has 177 in it just needs a little bit more fuel.

I was also AutoTuning with VEAL on during this time.

shuiend is online now   Reply With Quote
Old 03-29-2011, 03:33 PM   #567
Junior Member
iTrader: (1)
 
Join Date: Aug 2008
Location: Granada, Spain
Posts: 336
Total Cats: 2
Default

check for bit 7/8 in mlv, those flags indicate when the accel enrichments kicks in
ismael_pt is offline   Reply With Quote
Old 03-29-2011, 03:43 PM   #568
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,008
Total Cats: 398
Default

MAP based enrichment was kicking in. we had him set accel to 100% TPS based to avoid MAP noise causing enrich/enleanments.
y8s is offline   Reply With Quote
Old 03-29-2011, 04:43 PM   #569
Elite Member
 
Join Date: Jul 2005
Posts: 6,443
Total Cats: 80
Default

He needs my "2 pole" MAP filter circuit.
JasonC SBB is offline   Reply With Quote
Old 03-29-2011, 04:58 PM   #570
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,510
Total Cats: 1,710
Default

the software has built in filtering, he just needs to apply it.
Braineack is offline   Reply With Quote
Old 03-29-2011, 07:23 PM   #571
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by shuiend View Post
I really think it has to do with how the 4 fuel cells that it is passing through at those points are tuned. Right now they are really rough and that is causing it to go slightly lean. Below is what my fuel table currently looks like. The 4 boxes that are grey are where it is when those spikes occure. I think the one that has 177 in it just needs a little bit more fuel.

I was also AutoTuning with VEAL on during this time.

What happens if you smooth those cells out? That's a pretty big hole.
Faeflora is offline   Reply With Quote
Old 03-29-2011, 08:13 PM   #572
Junior Member
iTrader: (1)
 
Join Date: Aug 2008
Location: Granada, Spain
Posts: 336
Total Cats: 2
Default

Quote:
Originally Posted by Braineack View Post
the software has built in filtering, he just needs to apply it.
I have found that filtering only applies to the MAP value but not for the mapdot, wich triggers the enrichments when they are MAP based. Unless this was fixed in MS3, the quickest way to fix the problem is using a small fuel filter to damp the fast changes in MAP signal.

http://image.made-in-china.com/2f0j0...lter-GF61-.jpg
ismael_pt is offline   Reply With Quote
Old 03-30-2011, 11:46 AM   #573
mkturbo.com
Thread Starter
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,718
Total Cats: 1,086
Default

I just had Tim order me a new black BOV. Hells Yah.
shuiend is online now   Reply With Quote
Old 03-30-2011, 11:56 AM   #574
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,510
Total Cats: 1,710
Default

bling. hows thats part time job working out for you?
Braineack is offline   Reply With Quote
Old 03-30-2011, 12:01 PM   #575
mkturbo.com
Thread Starter
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,718
Total Cats: 1,086
Default

Quote:
Originally Posted by Braineack View Post
bling. hows thats part time job working out for you?
It provides ramen noodles for food and absurdflow goodness for my car. Everyone can see where my priorities are.
shuiend is online now   Reply With Quote
Old 03-30-2011, 12:08 PM   #576
Senior Member
iTrader: (6)
 
Join Date: Aug 2009
Location: Charlotte, NC
Posts: 924
Total Cats: 16
Default

^ LOL so theyre the same as my priorities then!
Gryff is offline   Reply With Quote
Old 03-30-2011, 12:46 PM   #577
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,458
Total Cats: 244
Default

Quote:
Originally Posted by shuiend View Post
I just had Tim order me a new black BOV. Hells Yah.
Those are wastegates bud. You want this, right? Ask Trey what spring to get.

TurboTim is offline   Reply With Quote
Old 03-30-2011, 12:50 PM   #578
mkturbo.com
Thread Starter
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,718
Total Cats: 1,086
Default

Quote:
Originally Posted by TurboTim View Post
Those are wastegates bud. You want this, right? Ask Trey what spring to get.

Wow Tial totally has the wrong picture sitting on their website for the Tial Q BOV for available finishes. That is where I stole the picture from.
shuiend is online now   Reply With Quote
Old 03-30-2011, 07:20 PM   #579
mkturbo.com
Thread Starter
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,718
Total Cats: 1,086
Default

Yes or no to mounting my MS3 on the rear shelf?
shuiend is online now   Reply With Quote
Old 03-30-2011, 07:24 PM   #580
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,765
Total Cats: 2,494
Default

Quote:
Originally Posted by shuiend View Post
Spool on the ChinaCharger is definitely a little slower then I would like. In a 4th gear pull in my 6speed I have 100kpa at 2800rpms and get to 200kpa at 5800rpms. It makes me a little sad. But damn does it still pull. I do not have VVT up and running yet so hopefully when I get that setup it helps the spool out a good bit.
HOLY FAIL BATMAN
I don't know wtf is up with that churbo of yours, but something aint right
18psi is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
330whp/343wtq 2005 MSM - $16,500 - CO 05pearl Cars for sale/trade 21 05-17-2017 08:12 AM
Making my daily, less of a daily 96morbst Meet and Greet 11 04-16-2016 03:08 PM
2000 Miata brain built MS3. Idle issues/ give my tune a look? sickmiatabra MEGAsquirt 0 04-13-2016 09:54 PM
Engine refresh plan beatle Engine Performance 13 03-06-2016 02:07 PM


Tags
patsmx5 is dumb

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:25 PM.