Boost, Stumbling, No Power - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 03-09-2012, 09:30 AM   #21
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,009
Total Cats: 583
Default

Can't see your vid. If the intake you're talking about is on the suction side of the compressor, then your theory is plausible. Can you swap it out and test?
hornetball is offline   Reply With Quote
Old 03-09-2012, 06:24 PM   #22
Newb
Thread Starter
 
Join Date: Jun 2011
Posts: 27
Total Cats: 0
Default

It is on the suction side.
Straight off the compressor, 130' then straight pipe to filter.

I will try and figure out a way to lose the silicone.

Wish i had off thought of this a week or so ago..... UGHH!!

Will report back results..

Might take plug gap back to 0.030 also.
dweezle is offline   Reply With Quote
Old 03-09-2012, 07:26 PM   #23
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,009
Total Cats: 583
Default

Yeah, run the biggest gap you can without engine miss.
hornetball is offline   Reply With Quote
Old 03-09-2012, 10:27 PM   #24
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Dwell dude
Faeflora is offline   Reply With Quote
Old 03-09-2012, 10:47 PM   #25
Newb
Thread Starter
 
Join Date: Jun 2011
Posts: 27
Total Cats: 0
Default

Quote:
Originally Posted by Faeflora View Post
Dwell dude
??????

hah I'm lost
dweezle is offline   Reply With Quote
Old 03-10-2012, 04:55 AM   #26
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

You CAN put something in the pipe.... like a pvc section to stop it sucking closed, but it MUST NOT be able to fit into the compressor, ive seen a brand new GT35 killed this way.

Dann
nitrodann is offline   Reply With Quote
Old 03-11-2012, 03:51 AM   #27
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,009
Total Cats: 583
Default

Quote:
Originally Posted by dweezle View Post
??????

hah I'm lost
Fae means ignition dwell. If it's not set correctly, you'll have a weak spark.

However, your approach is better. 9 times out of 10, it's messing up because you messed it up, not because something randomly failed. So, think back to when it was running right and try to remember what you did (wrong).
hornetball is offline   Reply With Quote
Old 03-11-2012, 05:09 AM   #28
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by nitrodann View Post
You CAN put something in the pipe.... like a pvc section to stop it sucking closed, but it MUST NOT be able to fit into the compressor, ive seen a brand new GT35 killed this way.

Dann


Wow that is super fails!!!


Dude just replace the flex fail section with hard pvc pipe. For the intake, it is legit.
Faeflora is offline   Reply With Quote
Old 03-21-2012, 12:55 AM   #29
Newb
Thread Starter
 
Join Date: Jun 2011
Posts: 27
Total Cats: 0
Default

update..

Lost the silicone joiner but still had stumbling and No power.
Whacked a 2.5" Exhaust with a new Cat on and issue was still there.
For ***** and giggles we added some more fuel to the REQ FUEL, Issue got worse.
So we incrementally went down.
Was at 6.5 with my 450cc injectors.
Went 6.3, 6.0, was getting better and better, all the way to 5.6.
Now it pulls quite strong the whole way.
My LC1 Gauge reads alot leaner, still safe but am assuming the LC1 Sensor needs to be recalibrated.
Perhaps the calibration was lost and then when autotuning it just went to town FUEL wise and was over fuelling to death.

So will get the LC1 out and recalibrate and see how i go.
dweezle is offline   Reply With Quote
Old 03-29-2012, 12:15 AM   #30
Newb
Thread Starter
 
Join Date: Jun 2011
Posts: 27
Total Cats: 0
Default

so finally got a chance to pull the LC1 out and recalibrate.

Issue is obvious once i looked in LOGWORKS.
I am getting the wrong readings at the analogue gauge and Tunerstudios.



I am actually running at least 1.4 leaner than what TS and the gauge thinks.
Explains why it idles so well at 15.. oops.

So am now trying to get Tunerstudios and my G5 gauge to read what LOGWORKS does.
Attached Thumbnails
Boost, Stumbling, No Power-2012-03-29102322.jpg  
dweezle is offline   Reply With Quote
Old 03-29-2012, 02:18 AM   #31
Senior Member
 
Join Date: Mar 2006
Location: Schwarzenberg, Germany
Posts: 1,497
Total Cats: 81
Default

Picture says you are richer...

BUT - why do you trust one reading over 2 other readings? Just a thought...
Zaphod is offline   Reply With Quote
Old 11-14-2014, 04:17 PM   #32
Newb
 
Join Date: Nov 2014
Posts: 4
Total Cats: 0
Default

I have very similar problem with my 1.8 turbo miata NA, so i don't create new topic.

The problem began when my car don't start at all one day, starter was spinning flywheel but engine don't evan cough, after one hour engine start whitout any problems, i don't do practicly anything, it was running at idle very well, but when i start moving it run very bad, idle goes teribbly low, when i put trottle down there was exhaust shooting.

After night engine run perflectly well and i drove around 40 miles without any issues.

Suddenly during driving engine stop and the same story, engine wont start for one hour. In this time i checked gauges in Tuner Studio and all was fine and i swaped a CAS from my friend car, it didn't start with the swaped CAS and my CAS works in friend's car.

After one hour engine started and stay in this condition to this day. Huge lack of power when boost is rasing above 0, acceleration is worst than standard N/A. it is running quite normal when i'm adding trottle gently in low range of RPMs (max 3000 RPM).

I changed also MapSensor from dual 400kPa, to singel 250kPa, couse i saw in log that boost is incredibly high in low RPM (120kPA in 2500RPM). After Map Sensor change log looks better, engine runs better at idle, at full trottle still have the same lack of power, but it don't shoot from ehaust so much.

Here is link for MS logs
http://www.pagadesign.net/logs.zip

I checked also fuel pump, i swaped it, but nothing changed. I checked also wiring for CAS and stuff like that, all good.

Have you any adviced?

Dweezle how you story with your problem end?
autopaga is offline   Reply With Quote
Old 11-15-2014, 08:53 AM   #33
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,662
Total Cats: 1,560
Default

Patryk, I looked at your logs. Something is definitely wrong. Is it actually going into boost or is your MAP reading off? It is going WAY rich under acceleration.

What part of the world are you from?
sixshooter is online now   Reply With Quote
Old 11-15-2014, 09:13 AM   #34
Newb
 
Join Date: Nov 2014
Posts: 4
Total Cats: 0
Default

I'm from Poland.

Please download again zip package.

I uploaded wrong file 'new map sensor driving.msl' yesterday, now it's correct.

Boost in this file seams real in my opinion.
autopaga is offline   Reply With Quote
Old 11-16-2014, 07:21 AM   #35
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,662
Total Cats: 1,560
Default

At 1826.422 it goes super rich under acceleration, just like I saw on the other logs. That is not good at all.

Then it looks like it hits the overboost protection at 1826.562, which makes it the computer cut the fuel off. Do you have the overboost protection set for around 200kpa or 14-15psi?
sixshooter is online now   Reply With Quote
Old 11-16-2014, 09:18 AM   #36
Newb
 
Join Date: Nov 2014
Posts: 4
Total Cats: 0
Default

yes i have overboost protection at 200kPa.

What could be a cause of this super rich moments?

Here is my msq file, from time when car was working properly. Now it has changed ASE and idle section in fuel and spark, but it doesn't matter in this case.

http://www.pagadesign.net/msq.zip
autopaga is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
6ULs for Sale in Green Bay JStoops Miata parts for sale/trade 0 09-28-2015 06:35 PM


Thread Tools

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 09:15 AM.