Engine boggling when in 4th and 5th gear - Page 2 - Subaru Impreza WRX STI Forums: IWSTI.com
STI Forum
Join
Start New Thread Create Account Advertise FAQ Members List Contact
Engine boggling when in 4th and 5th gear
Engine boggling when in 4th and 5th gear
Go Back   STI Forums > > > Engine boggling when in 4th and 5th gear
Reply
 
Thread Tools
Old 04-26-17, 08:31 AM   #11
yamahaSHO
BROtuner
Feedback Score: 7 reviews
 
Car: 2005 WRB
Fav Mod: Equal Length Header
My Subaru Parts for sale

Join Date: Oct 2007
Location: Denver, CO
yamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant future
Default Re: Engine boggling when in 4th and 5th gear

Quote:
Originally Posted by SlowInFastOut View Post
Not that i wanna be off topic but did you solve your borg warner efr turbo set up yet yamahaSHO? And if you have a chance can you maybe chime in on my thread for going to rotated x3576r?
Are you talking about the IWG and holding boost? I haven't done anything more yet, but plan to tighten the actuator a little more. It's an IWG, although a very good one, it won't ever behave like an EWG, but we'll see how close we can get it. I seem to spend more time on other peoples cars in this regard than I do on mine... Mainly because I just want to drive and if it's making good power and not blowing up, I'm having fun.

I'll take a look at the thread.
__________________
Looking at turbo upgrades? Click here.
jaz|TUNING

yamahaSHO is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Old 04-26-17, 09:25 AM   #12
KP34
Becoming A Contributor
Feedback Score: 0 reviews
 
Fav Mod: Coming Soon
My Threads
Posts: 11
My Subaru Parts for sale

Join Date: Apr 2017
KP34 is an unknown quantity at this point
Default Re: Engine boggling when in 4th and 5th gear

Quote:
Originally Posted by SlowInFastOut View Post
You bought the car last may and its always been at 14psi no matter what you do to it? Was there any previous tuning history on the car?

Pro tune is when you get tuned on the dyno with a tuner.

Are you in s# or s? Even the stock map was 17.5 psi for me on a bad day wide open throttle. If you only see 14psi you might have a boost leak somewhere causing the car to constantly try amd correct fueling and make it feel like its bogging.

Try to get boost leak tested and correct what you find. The tmic coupler and inlet can cause some wierd things to happen if there are tears in it or if they come off.
The most psi I've pushed in this car is 18. And that was the first 6 months I had it. It pushed 16-17 easy. Now it's only 13-14. I'll have to get it checked for boost leaks. The only "tune" I know of is the Cobb stage 2 before I bought it.
KP34 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 04-26-17, 09:39 AM   #13
SlowInFastOut
Advanced Contributor Level 1
Feedback Score: 0 reviews
 
Car: 2011 Grey Sti Sedan
Fav Mod: 1.5xtr
My Threads
Posts: 181
My Subaru Parts for sale

Join Date: Sep 2016
Location: Massachusetts
SlowInFastOut is on a distinguished road
Default Re: Engine boggling when in 4th and 5th gear

Quote:
Originally Posted by KP34 View Post
The most psi I've pushed in this car is 18. And that was the first 6 months I had it. It pushed 16-17 easy. Now it's only 13-14. I'll have to get it checked for boost leaks. The only "tune" I know of is the Cobb stage 2 before I bought it.
I see. I figured it would be around there. But as yamahasho said. Its hard without logs to tell. Boost leak tests every now and then dont hurt. But if there is any service history you should see when they did plugs last or if ever. Or even just pull the plugs and take a look at their conditions.

I like to check before i spend money. Im cheap.
SlowInFastOut is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Old 04-26-17, 11:19 AM   #14
yamahaSHO
BROtuner
Feedback Score: 7 reviews
 
Car: 2005 WRB
Fav Mod: Equal Length Header
My Subaru Parts for sale

Join Date: Oct 2007
Location: Denver, CO
yamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant future
Default Re: Engine boggling when in 4th and 5th gear

Look at your DAM as well. If it is low enough, it'll start dropping boost, timing, and fueling.
__________________
Looking at turbo upgrades? Click here.
jaz|TUNING

yamahaSHO is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 04-27-17, 06:49 AM   #15
NWIEBE147
Becoming A Contributor
Feedback Score: 0 reviews
 
Car: WRB 2010 STi
Fav Mod: Pfftt
My Threads
Posts: 36
My Subaru Parts for sale

Join Date: Jan 2017
Location: Denver Colorado
NWIEBE147 is an unknown quantity at this point
Default Re: Engine boggling when in 4th and 5th gear

Boost leak is possible but wouldn't he have the same issue in all gears?
NWIEBE147 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 04-28-17, 02:26 PM   #16
KP34
Becoming A Contributor
Feedback Score: 0 reviews
 
Fav Mod: Coming Soon
My Threads
Posts: 11
My Subaru Parts for sale

Join Date: Apr 2017
KP34 is an unknown quantity at this point
Default Re: Engine boggling when in 4th and 5th gear

Quote:
Originally Posted by yamahaSHO View Post
Look at your DAM as well. If it is low enough, it'll start dropping boost, timing, and fueling.
I will try and take a look at all of the different possibilities this weekend. Might not be able to get a lot done, got school to deal with but I'll keep everyone posted.
KP34 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 04-28-17, 04:04 PM   #17
yamahaSHO
BROtuner
Feedback Score: 7 reviews
 
Car: 2005 WRB
Fav Mod: Equal Length Header
My Subaru Parts for sale

Join Date: Oct 2007
Location: Denver, CO
yamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant futureyamahaSHO has a brilliant future
Default Re: Engine boggling when in 4th and 5th gear

Anyone else think about this when they read the thread title?

https://www.youtube.com/v/rSfebOXSBOE
__________________
Looking at turbo upgrades? Click here.
jaz|TUNING

yamahaSHO is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 04-28-17, 04:14 PM   #18
SlowInFastOut
Advanced Contributor Level 1
Feedback Score: 0 reviews
 
Car: 2011 Grey Sti Sedan
Fav Mod: 1.5xtr
My Threads
Posts: 181
My Subaru Parts for sale

Join Date: Sep 2016
Location: Massachusetts
SlowInFastOut is on a distinguished road
Default Re: Engine boggling when in 4th and 5th gear

Quote:
Originally Posted by yamahaSHO View Post
Anyone else think about this when they read the thread title?

movie
Maybe it is that mind bottling though......
SlowInFastOut is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 05-03-17, 06:55 PM   #19
KP34
Becoming A Contributor
Feedback Score: 0 reviews
 
Fav Mod: Coming Soon
My Threads
Posts: 11
My Subaru Parts for sale

Join Date: Apr 2017
KP34 is an unknown quantity at this point
Default Re: Engine boggling when in 4th and 5th gear

Quote:
Originally Posted by SlowInFastOut View Post
So not pro tuned? Or are you doing the tuning? 14 psi? Is the engine light on? When are you starting these pulls and how far into the rpm range are you wringing it out to?

My suggestion would be to put the stock intake back in, reset the ecu to the appropriate cobb map for you mods. And drive it again. The stumble rally sport is talking about only happens between 2800 to 3100 ish then open loop fuel fueling does its thing.
I also forgot to mention that I also have a gofastbits blow off valve. Which im not sure if that could be causing the problem or not.

I couldn't get around to checking out any problems. Hopefully this weekend lol
KP34 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Old 10-24-18, 01:21 PM   #20
KP34
Becoming A Contributor
Feedback Score: 0 reviews
 
Fav Mod: Coming Soon
My Threads
Posts: 11
My Subaru Parts for sale

Join Date: Apr 2017
KP34 is an unknown quantity at this point
Default

I figured out the issue a while back. It was my top mount inter cooler to throttle body hose that had warped and was causing a major boost leak. I ordered a new Perrin hose and it’s a direct fit and holds boost 100% better than stock.
KP34 is offline  
Likes 0 Dislikes 0
 
Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may post new threads
You may 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Strange 5th gear to 4th gear downshift hwong 2.5 Liter/Litre Factory Motor 13 04-10-17 05:39 PM
5th gear downshift to 4th wok1tout2823 General Subaru Discussion 10 10-18-14 09:22 AM
Accessport 2005 cobb ap v2 stage 1 boost creep in 4th and 5th gear WhiteOnRice ECU Tuning & Performance Electronics 5 03-29-11 09:47 AM
Speed-Shift "grind" from 4th to 5th gear u000gbk Warranty / Service Issues 83 05-19-08 06:07 AM


New To Site? Need Help? More

All times are GMT -8. The time now is 12:22 PM.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Designed & Powered by Domain Architect
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.