Done With Rebuild But Have Rev Issues - Subaru WRX Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 26 Old 10-11-2008, 01:27 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
Exclamation Done With Rebuild But Have Rev Issues

im done rebuilding my ej20 but i will only rev to 4500 and then starts to backfire. ive checked all my intercooler piping and there are no leaks my bov is hooked up the same as when it came off in starting to get frusterated if any one has any suggestions, it would help me big time.
bluesubiaz is offline  
Sponsored Links
Advertisement
 
post #2 of 26 Old 10-12-2008, 01:39 PM
WRXpert
 
dumdum's Avatar
 
Join Date: Sep 2004
Location: Virginia
Posts: 2,800
Images: 12
dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention
You haven't listed a whole lot of detail.What are your mods and what was done to the engine?Who built and installed the engine?Do you have a way to datalog the car?

Homebrewed tuned with Opensource!
dumdum is offline  
post #3 of 26 Old 10-12-2008, 07:53 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
the only thing done is
APR Studs
TD05 Turbo
Turbo Inlet
Catless Up-pipe
Catless Down Pipe
Cat Back Exhuast
AEM Intake
Crank Pulley
HKS SSQV Bov

I keep throwing P1086 Tumbler Sensor Low Input LH
P1088 Tumbler Sensor Low Input RH

It Idles Fine Till About 3500 And Backfires And Dosent Rev Any Higher Than 4500
Does Anyone Know How To Properly Install The Tumbler Motors And Pos Sensors?
bluesubiaz is offline  
post #4 of 26 Old 10-13-2008, 12:08 PM
WRXpert
 
dumdum's Avatar
 
Join Date: Sep 2004
Location: Virginia
Posts: 2,800
Images: 12
dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention
Quote:
Originally Posted by bluesubiaz View Post
the only thing done is
APR Studs
TD05 Turbo
Turbo Inlet
Catless Up-pipe
Catless Down Pipe
Cat Back Exhuast
AEM Intake
Crank Pulley
HKS SSQV Bov

I keep throwing P1086 Tumbler Sensor Low Input LH
P1088 Tumbler Sensor Low Input RH

It Idles Fine Till About 3500 And Backfires And Dosent Rev Any Higher Than 4500
Does Anyone Know How To Properly Install The Tumbler Motors And Pos Sensors?
Why do you not have any injectors listed and who tuned the car?Why did you mess with the sensors on the TGV's?The sensors are just like any other TPS.You have to preload the spring inside.FYI-stating all this information in your first post would have gotten you answers alot quicker.There seriously needs to be a sticky on how to ask a technical question.I'm betting the codes you are getting are causing the car to go into limp mode because either it thinks the TGV plates are closed or they are closed.If you did the TGV delete than you should have listed that too.....

Homebrewed tuned with Opensource!
dumdum is offline  
post #5 of 26 Old 10-13-2008, 08:06 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
ive got stock injectors , and when i originally posted i didnt have the tgv codes, and i havent deleted the tgvs. when i had the intake manifold off the car i was going to delete them and pulled the sensors and motors, but i read up on them and someone said that unless your pushing 30 or more psi of boost its point less, so i desided to not do it.
bluesubiaz is offline  
post #6 of 26 Old 10-14-2008, 09:11 AM
WRXpert
 
dumdum's Avatar
 
Join Date: Sep 2004
Location: Virginia
Posts: 2,800
Images: 12
dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention
Quote:
Originally Posted by bluesubiaz View Post
ive got stock injectors , and when i originally posted i didnt have the tgv codes, and i havent deleted the tgvs. when i had the intake manifold off the car i was going to delete them and pulled the sensors and motors, but i read up on them and someone said that unless your pushing 30 or more psi of boost its point less, so i desided to not do it.
Okay that is your problem as well.You cannot run stock injectors on ANY upgraded turbo especially if you have no tune.A small 16G flows over 100cfm more than the stock turbo at 1bar.You said TD05 turbo.What TDO5?18g small16G,Big 16G,Evo III 16G........You are probably leaning your engine way out...........this is pretty basic knowledge.No offense,but maybe you might want to think about having a professional tuner/installer work on your car.

Homebrewed tuned with Opensource!
dumdum is offline  
post #7 of 26 Old 10-14-2008, 11:33 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
my issue with having someone tune my car is that they are 250miles away and 7000ft in elevation difference and ive seen guys go down and pay 500-600 dollars to have there car tuned and come back up with the same shit running car. what im wondering is how hard could it be to tune it my self, i been looking at the cobb access port and it seems pretty staright forward. oh and by the way i got my tgv figured out .....with the intake manifold on the car i was turning the valves to what i thought was closed but actually open and putting the motors on so they were wide open when they should have been closed, and really the only way to do it right was to have the manifold off open em put on the sensors then hold the valves closed and install the motors. so now all ive got to figure out is the tuning issue and get larger injectors??? what do you recommend for injectors, as for the make of my turbo i hate to say it but its an ebay item no brand just td05. it was only like $550 and my original turbo was toast. you seem pretty knowledgeable and i appreceate your help with everything and if you have some suggestions that would be great. and could a bad tune cause a P0303 Code (Cylinder 3 Misfire) To Occur?

Last edited by mosc; 10-15-2008 at 02:23 AM.
bluesubiaz is offline  
post #8 of 26 Old 10-15-2008, 12:29 PM
WRXpert
 
dumdum's Avatar
 
Join Date: Sep 2004
Location: Virginia
Posts: 2,800
Images: 12
dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention
If you have never tuned a car this would not be the time to start.I would check this with an air compressor,but I garentee that turbos wastegate actuator is like 15-18psi.Some people have had problems with those turbos.You need at a minium 55cc injectors for that turbo.

Homebrewed tuned with Opensource!
dumdum is offline  
post #9 of 26 Old 10-15-2008, 02:27 PM
WRXtuners Member
 
Join Date: Oct 2007
Location: Georgia
Posts: 158
seanwrxwagon is more helpful than not
550cc
seanwrxwagon is offline  
post #10 of 26 Old 10-15-2008, 02:37 PM
WRXtuners Member
 
wrxshotta's Avatar
 
Join Date: Jun 2008
Location: Florida
Posts: 151
wrxshotta is on thin ice
yeah bro...you need a tune...or else your car will cease to exist...tuning requires alot of knowledge as well as experience...a shitty tune is as good as no tune...if you dont want to have it tunes then buy some sort of EM...like the cobb AP and use a custom map..they have plenty of map combos for TD05's and 550cc sti pinks.
wrxshotta is offline  
post #11 of 26 Old 10-15-2008, 03:17 PM
WRXtuners Member
 
Boostbuddy's Avatar
 
Join Date: May 2006
Location: Colorado
Posts: 331
Boostbuddy is an unknown
Send a message via AIM to Boostbuddy Send a message via Yahoo to Boostbuddy
Which EM....we have few tuners that will email you a tune...we are good with high altitude tuning
Boostbuddy is offline  
post #12 of 26 Old 10-15-2008, 11:31 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
the ebay add said it had a 0.8 bar wastegate that of which would be about 15 pounds but when it was running good it never spiked over 1.0 bar and ive got it routed to the factory boost controller and everything the way its running i feel like its got a boost leak, but only if i get into it and when i do my cel starts to flash and i check my codes and im still getting p1086 and p1088. which is still those damn tgv's oh and my cylinder 4 misfire.
bluesubiaz is offline  
post #13 of 26 Old 10-16-2008, 12:20 PM
WRXpert
 
dumdum's Avatar
 
Join Date: Sep 2004
Location: Virginia
Posts: 2,800
Images: 12
dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention
Quote:
Originally Posted by seanwrxwagon View Post
550cc
Whoops!Forgot the zero.

Quote:
Originally Posted by bluesubiaz
the ebay add said it had a 0.8 bar wastegate that of which would be about 15 pounds but when it was running good it never spiked over 1.0 bar and ive got it routed to the factory boost controller and everything the way its running i feel like its got a boost leak, but only if i get into it and when i do my cel starts to flash and i check my codes and im still getting p1086 and p1088. which is still those damn tgv's oh and my cylinder 4 misfire.
1bar= 14.5psi.Takes 5-10 minutes to test the wastegate.You don't even have to remove it from the turbo.Seiously,take your car to a professional.You pretty much have done irrepairable damage to your brand new motor already.The flashing CEL is BAD

Homebrewed tuned with Opensource!
dumdum is offline  
post #14 of 26 Old 10-16-2008, 04:30 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
so i was looking under my hood getting ready to test my wastegate and found my cylinder 2 and cylinder 4 hanging off so i reatched them and hook up my obd 2 reader and no codes so i thought ill drive it a little and ive got no problems or stutters or anything and im still only pulling 1 bar which is no more than before i rebuilt it , but i am still going to take everyone advice and get it tuned (im always down for more power). how exactly do i test the waste gate???
bluesubiaz is offline  
post #15 of 26 Old 10-23-2008, 07:02 PM Thread Starter
WRXtuners Member
 
bluesubiaz's Avatar
 
Join Date: May 2007
Location: Arizona
Posts: 42
bluesubiaz is an unknown
ok so im ready for you guys to hate me but im in need of help to reistall my TGV Motors And Sensors My check engine light came on again and im getting the same codes (p1086 & p1088) im 150% positive there not installed right, the car runs great until about 5500 rpms and pulling only 0.8 bar, then studders a little and 0.8 bar is less than the car was pulling in boost before the rebuild. after the studder i get misfire codes only cyl 2.
bluesubiaz is offline  
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome