GalantVR4.org The Mitsubishi Galant VR-4 Forum
Galant VR-4 Forums » Galant VR-4 » Newbies » WOT 5k stutter w/ new evo 3 16g
Previous thread Next thread

WOT 5k stutter w/ new evo 3 16g


dillon233
Newbie
967/2000


Galant VR-4 org Post #: 1138390 posted 08/30/13 01:40 AM     Remind Me!  Send Private Message   Edit Post      
Hey there!

I just installed an Evo III 16g in my gvr4. Everything runs great, boost gauge holds at 15 pounds WOT, but at 5.5k it has a small stutter (engine just looses power, no noticeable sounds or anything) and then pulls slowly. I haven't held it to see if it will go to redline, kinda worried about harming anything. Can't figure out why it is doing this. I cleaned out the TB, checked all connections, seafoamed car, oil change, even switched out the wastegate actuator from my small 16 to see if that was the issue. Still the same problem.

Any help will be appreciated. I will do a boost leak test in the morning and post results.

Thanks!

Posts: 23 | From: Denver, CO | Member Since: 05/20/13 | IP: (107.2.203.41) | Report this post to a Moderator

LIV4PSI
dyslexic 1051
1501/2000


Galant VR-4 org Post #: 1138391 posted 08/30/13 01:45 AM     Remind Me!  Send Private Message   Edit Post      
Chances are that the boost leak test will answer your question.



-Craig
1501 Build Thread



Edited by LIV4PSI (08/30/13 01:46 AM)

Posts: 1762 | From: O-H-I-O | Member Since: 11/24/11 | IP: (66.87.115.169) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1138413 posted 08/30/13 10:07 AM     Remind Me!  Send Private Message   Edit Post      
Stock diverter valve could be opening. Like mentioned, do a boost leak test to determine. Start there.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

G Galant VR4.org Moderator
JDM Unit
486/1000


Galant VR-4 org Post #: 1138416 posted 08/30/13 10:30 AM     Remind Me!  Send Private Message   Edit Post      
What injectors are you running? Stock mas?



www.japanesenostalgiccar.com
www.nostalgic.co.jp

Posts: 8896 | From: zompton | Member Since: 02/24/04 | IP: (50.193.76.5) | Report this post to a Moderator

slugsgomoo
god hates stupid people
461/1000


Galant VR-4 org Post #: 1138418 posted 08/30/13 10:56 AM     Remind Me!  Send Private Message   Edit Post      
Do you have a logger? Since you don't mention other mods, my first inclination goes towards fuel cut.



-andrew
{witty signature}
#461 Kensington Grey - 2.4L/T67/etc
2015 Triumph Tiger 800 XCx
2014 Ford Focus ST

Posts: 3724 | From: Tacoma, WA | Member Since: 10/16/03 | IP: (67.168.182.28) | Report this post to a Moderator

tyeler18
Junior Member
736/2000


Galant VR-4 org Post #: 1138527 posted 08/31/13 01:14 AM     Remind Me!  Send Private Message   Edit Post      
I agree with possible fuel cut. Have a boost gauge? Could definitely be creeping and fuel cutting, however, that generally feels like a wall. Other possibilities are a boost leak, fouled plugs etc. More than likely a boost leak.



736/2000- FP Red, buschur turbo back, Evo 8 ecu, FIC2150, modified 1g Mishimoto X-line, evo 9 JIC coilovers, Powerstop Z26 brakes, and a trunk full of groceries.

Posts: 94 | From: Casa Grande, AZ | Member Since: 07/16/12 | IP: (174.17.49.20) | Report this post to a Moderator

dillon233
Newbie
967/2000


Galant VR-4 org Post #: 1138533 posted 08/31/13 02:36 AM     Remind Me!  Send Private Message   Edit Post      
Sorry, thought my build would show up on my post. I have a Tial BOV, so not stock diverter. Aftermarket boost gauge holds at 15psi. Running stock injectors and mas. Before turbo upgrade, car ran to 7.5k with no stutter at all. No logger, but my custom EPROM cancels the fuel cut. I have new plugs & wires. Didn't get a chance to boost leak test today, had to replace crush washers on turbo due to coolant leak. Will boost test tomorrow. Thinking I might have messed up with re tightening fmic piping after cleaning intercooler. Thanks for the help so far.

Posts: 23 | From: Denver, CO | Member Since: 05/20/13 | IP: (107.2.203.41) | Report this post to a Moderator

LIV4PSI
dyslexic 1051
1501/2000


Galant VR-4 org Post #: 1138568 posted 08/31/13 12:55 PM     Remind Me!  Send Private Message   Edit Post      
You are running a setup that is wrong. You shouldn't be running a vented "diverter valve" on a stock MAF. Setup this way, your car will never run right, and always make less power than it should.



-Craig
1501 Build Thread



Edited by LIV4PSI (08/31/13 01:33 PM)

Posts: 1762 | From: O-H-I-O | Member Since: 11/24/11 | IP: (66.87.94.137) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1138576 posted 08/31/13 01:50 PM     Remind Me!  Send Private Message   Edit Post      
What? Are you saying non recirc valves cause a loss in power? How so?

It will die coming to a stop, and run rich during shifts, but a loss of power?

OP:
You mention a chipped ecu. Is it a tuned eprom, or just a fuel cut eliminator? You may also what to try closing the gap on your plugs to .24" and see what happens.



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (24.230.93.110) | Report this post to a Moderator

LIV4PSI
dyslexic 1051
1501/2000


Galant VR-4 org Post #: 1138579 posted 08/31/13 02:02 PM     Remind Me!  Send Private Message   Edit Post      
Running rich takes away power, although I understand most people find it to be insignificant. It matters enough to raise your E.T. when racing



-Craig
1501 Build Thread


Posts: 1762 | From: O-H-I-O | Member Since: 11/24/11 | IP: (75.89.183.89) | Report this post to a Moderator

MX4
Member +++


Galant VR-4 org Post #: 1138603 posted 08/31/13 07:57 PM     Remind Me!  Send Private Message   Edit Post      
Do you have stutterbox on your new EPROM? If the speed sensor is faulty you won't be able to rev past the stutterbox rev point



Mitsubishi Galant VR4
12.692 @ 107.40 mph

Posts: 767 | From: New Zealand | Member Since: 04/09/01 | IP: (203.109.223.108) | Report this post to a Moderator

Diego
Mad Hatter Suite Touche Debackle Guage filled by Justin
1309/2000


Galant VR-4 org Post #: 1138671 posted 09/01/13 02:07 PM     Remind Me!  Send Private Message   Edit Post      
Since you're in Denver, you need to hit up Bryan. His handle is galantvr4559, or I'm not sure if Justin is around on these forums anymore, can't remember his handle.... Jon(Toybreaker) lives in the springs he has a plethora of knowledge and there is GeorgeBillings as well as Mike Texiera the Denver list is pretty big. He ahold of Bryan and take the Galant to Willies garage and they will look it over for you.
They are great guys and have tons of experience and are great help.

Diego



"I love blackjack. But I'm not addicted to gambling. I'm addicted to sitting in a semi circle."

91 nile black vr4, 1309/2000

Posts: 2132 | From: In a van down by the river, Io... | Member Since: 12/09/07 | IP: (67.61.29.246) | Report this post to a Moderator

dillon233
Newbie
967/2000


Galant VR-4 org Post #: 1138716 posted 09/02/13 12:39 AM     Remind Me!  Send Private Message   Edit Post      
I have a recirculated bov, it's not a wrong setup. It doesn't die at a stop or run rich. It's a tuned EPROM.

@Diego, thanks for the info!! I couldn't find too many mmc friendly shops around town. Surprised that there's that many gvr4 guys here. I've only seen one other and it was years ago.

I fixed the problem, the ring clamp on the fmic intake side was a little loose. The boost leak test made the coupling scream like a dying cat.

Thanks for all the help guys! Was faster and kinder responses than forums about my 3kgt. Haha.

Posts: 23 | From: Denver, CO | Member Since: 05/20/13 | IP: (107.2.203.41) | Report this post to a Moderator

LIV4PSI
dyslexic 1051
1501/2000


Galant VR-4 org Post #: 1138767 posted 09/02/13 01:29 PM     Remind Me!  Send Private Message   Edit Post      
I'm sorry for the incorrect assumption, I bet 95% of Tial valves are vented. I didn't mean to come off like an asshat



-Craig
1501 Build Thread


Posts: 1762 | From: O-H-I-O | Member Since: 11/24/11 | IP: (173.245.56.29) | Report this post to a Moderator

jnava Galant VR4.org Moderator
Senior Member


Galant VR-4 org Post #: 1139721 posted 09/09/13 08:37 PM     Remind Me!  Send Private Message   Edit Post      
So boost leak it was.....



57/2000
1865/2000
1058*/2000-SOLD
1989 Conquest Tsi
2000 2.5Gen Montero
2013 Outlander Sport

Posts: 2065 | From: Arlington, Tx | Member Since: 04/18/08 | IP: (108.162.221.144) | Report this post to a Moderator

prove_it
my racist jokes aren't actually funny
715/1000
1284/2000


Galant VR-4 org Post #: 1139911 posted 09/11/13 08:41 AM     Remind Me!  Send Private Message   Edit Post   
I was wondering what you found on this. Good to hear it was simple!



#1284/2K NB, Totaled
#715/1K KG, Rebuilding
02 Acura TL daily duty unit

12yr+ Vr4 owner.
Honda/Acura master tech.
Family Guy

Posts: 4201 | From: Sioux Falls, SD | Member Since: 07/04/08 | IP: (108.162.221.149) | Report this post to a Moderator


Pages: 1
Previous thread Next thread

Extra information
0 registered and 13 anonymous users are browsing this forum.

Galant VR4.org Moderator:  Hertz, curtis, steve, atc250r, jcgalntvr4-244, cheekychimp, jepherz, Rausch, toybreaker, iceman69510, pot, FlyingEagle 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 3963

Rate this thread


News & Events: News | Events
Galant VR-4: Newbies | General VR4 Discussions | Technical Discussions | How To and Info Archive
Marketplace: Parts For Sale | Cars For Sale | Good Guys | Bad Guys
Community: Members' Showcase

Contact Us | Privacy statement GalantVR-4.org

Generated in 0.078 seconds in which 0.055 seconds were spent on a total of 14 queries. Turbo powered.


Hertz's Galant VR-4 Page