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    Thread: John Ashley Exhaust from UK (header for 09+ ecotec engine)

    1. #1
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      John Ashley Exhaust from UK (header for 09+ ecotec engine)

      After 2 weeks I finally put my ecotec header on my 09aveo hatch. The headerhad top quality, nice beaded welds and inside the collector was smooth with no puddles- a sign that this guy knows his stuff. The header had to be slightly modified at the bottom to fit the flex pipe. My hatch sounds a little louder with a nice deep rumble( although I have a lil exhaust rattle under load at about 3000-3200rpm). The car seems to have gained some good #s in the mid range. I have yet to redline it as its only been on for about 5 miles.

      Link to his site: http://www.jaex.co.uk/



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      And now for the BS.... Tried to take the car for a spin and the gas pedal seemed worthless, the car idles up n down from 1000 to 250 and wants to die. I had cold engine hesitation before but sea foam patched it for a quick fix. I finally got a CEL but Im thinkin it is a O2 or cat code. I am hoping to scan in the next day or 2. This maybe a previous problem coming to life or a header install problem. Perhaps an exhaust leak in/ or betwwen the flanges?? But heres my question- if the leak is after the 1st O2 shouldn t there be no stalling/severe hesitation. Trouble shooters n opinions r welcome

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      if the flow is different, then it might be learning, is the o2 sensor in the collector or is it in a single section of tube?


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      The O2 is in the primary (nearly the stock location) and the other right before the flex pipe(nearly stock). I am wondering if a fouler extension(Ive got vibrants adjustable version for about $30) would help on the 2nd O2. Im gunna have to pull the codes- maybe the exhaust shop banged up the second O2??? Would the 2nd O2 affect drivability?? How long should the re learn take? I have already pulled the negative terminal for ecu reset.

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      Thanks for the input, Rabbit, Ur point of "re learning". My car left me stranded yesterday evening. I went out this morning unhooked the battery,remo ed my jet chip, let it sit for a half hour, fired it up n let it idle for about 15 minutes, drove it for about 20 minutes with no problems. Perhaps the ecu couldn t re learn with the chip in. If all goes well after a week or so Ill pop the chip back on and see. Right now Im just hoping for no CELs other than a cat code. FOR THE LAST 20 MINUTES THIS IS THE SINGLE BEST MOD DONE ON MY AVEO. Lets hope it stays all good.

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      Pooh man can you snap a picture of the motor with the header? Did you us that john ashey header you sent me a link for??

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      This is for the US spec ECOTEC found on 09 thru11 aveos the Euro engine code is Opel's Z16xer/Z18xer. If you have the 08-aveo I beleive the engine is the Z16xe or xep. What I did was e mail John Ashley thru his sites "contact us" I sent pictures of my exhaust gasket with a tape measure beneath for reference and it was close enough to pull the trigger. The head studs n ports matched perfect but the bottom of header flange I modified. The car ran like s*it till I pulled the negative terminal off of the battery and did the idle air control valve reset that I found on here. For the last 2 days Im all good wnjoying my daily commute. This is the best mod on these motors the entire exhaust is restrictive. Im not trying to start a great debate but it nearly seems like a stock b13 se-r( almost ). Now to try to work off the CEL- Ive got emissions every 2 years in IL

      http://www.jaex.co.uk/

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      This thread REALLY needs pictures!!!

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      Wait till I m outta work....

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      hope I did this right -a should be 2good pics




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      Last edited by Daox; 10-08-2013 at 11:11 PM. Reason: fixed images

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