Subaru WRX Forum

Subaru WRX Forum (
-   Tuning & Engine Management (
-   -   03 wrx tunning questions (

waynedawg 09-14-2013 12:57 AM

03 wrx tunning questions
So ive been having some problems tunning after installing a new intake and was looking for advice of where to look next. ive been having p0171 cel off and on and my idle afr is ~17:1, however cruising afr is right on and WOT is 11.1:1. so far ive been playing with the tune, replaced some leaking vacuum lines, cleaned maf, and cleaned idle air sensor. The car runs seemingly fine little rough idle but barely noticable, CEL hasnt come back on yet but its only been 5 miles. i also have logs at idle and WOT if that would help, but any advice of what to check next would be appreciated.

MODS: un-equal length headers, short ram intake, silicone intake tube to turbo, cobb access port, running personally modified stage 1 map.

Thanks, Wayne !Thumbs Up

BLAZE2099 09-14-2013 07:44 AM


n8mcd 09-14-2013 10:52 AM

Exhaust leak before the wideband sensor or shortly after will cause this.

It could also be a vaccum leak. But to lean it out that much it would have to be a pretty decent one.

psinuse 09-14-2013 01:51 PM

Why are you running a header on a basically stock car?

BLAZE2099 09-14-2013 03:51 PM

[quote=psinuse;356234]Why are you running a header on a basically stock car?[/quote]

Hmmm, and what about the rest of the exhaust?
Catless up? Turbo back? You should have these to go along which would make you a stage two.

If not, I'm with PSInuse. And are you running a BOV!!???!?!!!!:mad:

waynedawg 09-15-2013 03:58 AM

hi again. i have stock BOV, header and up pipe is one piece and catless because im working on a budget and can only do 1 upgrade at a time it will make sense eventually just trust me lol. And there may be exhaust leak cause theres a flex joint in my header, i will check that out and see what i can figure out, thanks!

psinuse 09-15-2013 06:03 AM

You'd be better off with a downpipe and full turbo back exhaust before ever needing a header.

BLAZE2099 09-15-2013 12:50 PM

This is true, save and buy quick, your car will thank you for it.

You kinda went out of order

waynedawg 09-15-2013 02:00 PM

I found a small leak at flex joint ill see what i can do to fix it not sure if i should replace or weld up solid and get rid of flex joint. yes downpipe is coming next but im gonna run stock muffler, and no im not out of order i have reasons for everything ive done but thanks anyways. :)

BLAZE2099 09-15-2013 02:53 PM

Yea, guess we have no clue what we're talking about.
Best of luck:rolleyes:!Thumbs Up

All times are GMT -5. The time now is 02:21 PM.

Powered by vBulletin®. Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging v3.0.8pl1 (Lite) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

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