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06gta

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Posts posted by 06gta

  2. Posted · Report reply

    Don't expect any more than 10-12bhp increase

    Fair enough, but the throttle response would also improve? After I installed my Unicorse II backbox, I thought I got more HP (say 7-10ish) but also a better throttle response, or was I just so taken with the exhaust note I got this all wrong!

    , if you want a little more also replace the main cats with sportscats,

    Something like 100 or 200 cell?

    but remember its not all about letting stuff out as the engine is ALLWAYS throttled by the inlet system and not the filter

    Do you mean increase the plenum - such as the ACT one discussed on AO?

    The main thing being forgotten here is that the down pipe end flanges are different, the main time consuming thing in a manifold swap is replacing the flanges as CF2 are 2 stud and cf3 are 3 stud, so it is not as simple as one off one on, it can be done by removing the front mnifold first then removing the gearbox and lower engine mounts and swinging the engine round,

    Was never going to change the flanges, rather have my exhaust shop make up connector pipes from the CF2 2 bolt to the 3 bolt centre pipes

    the other issue is heatshields and wiring route, everything is slightly different and as the wires in question are 12V lives then you don't want them banging off the nice earth which is the exhaust like I found on a recent 147 GTA clutch change.

    Sounds like I should spend my money and time elsewhere... :-)

  5. Posted · Report reply

    I've got a hold of a set of 166 headers (CF2) and understand that it's a fair deal to install them (unless you're due a clutch). Whilst it can be done with engine in there's about 6-8 hours labour...

    So I'm weighing up the pro's v cons. Has anyone done the CF2 install - was there any real worthwhile improvement?

    I was also thinking of ceramic coating them as well to further reduce the under bonnet temps.

    The CF2's don't meet up with the stock center pipe so a visit to the exhaust shop is also needed for a custom connection pipe.

  7. Posted · Report reply

    05 156 JTS SW

     

    Upon cold start I can hear an exhaust leak coming from front of engine for about 20-30 seconds

     

    I suspect a cracked header or gasket issue

     

    Is there an easy way to determine where the leak is coming from to then work on a fix or do I need to start removing heat shields to get a closer look

     

    Thanks in advance

  9. Posted · Edited by 06gta · Report reply

    resetting the ecu means you are clearing out the RAM - that is clearing out any stored details that the ecu has accumulated

    a reason to do so would be the installation of a new component that the ecu reads from and makes adjustments based on its feedback - such as a crank sensor, MAF, etc. I would not advise to reset because you have put in a new exhaust as the ecu should learn how to handle that from sensors. if your exhaust changes are major then perhaps you would consider a full remap

  10. Posted · Report reply

    You can drive it however you like as by resetting the ecu is goes back to a standard setting that the factory believes should work fine. However all cars are different and driven differently. the ecu will learn your car the more it is driven. Some cars have rough idle after a reset due to the car needing some adjustments to smooth things out - if this happens it will right itself in a couple of days unless there is an underlying issue. My suggestion to drive like you stole it merely refers to my preference to get in the params I want in the ecu ASAP. Insert smiley face here

     

     

  16. Posted · Report reply

    Just did a MES check on engine temp

     

    Got to bosses car 30 minutes after she got home so still warmish

     

    Ran for about 7 minutes at idle and temp gauge @ 75 but MES @ 90

     

    took for a drive and within 2 minutes of slow driving it got down to gauge @ 62 MES @ 78

     

    drove for a few more minutes and MES temp stayed @ 78 until I got home

  25. Posted · Edited by 06gta · Report reply

    The minister of finances 2005 JTS 156 sportwagon has the P0420 and P0430 errors (suggesting cats are cactus)

     

    it has 60m/97k on the clock. Starts well, idles fine, fuel economy is good but lacks power. Only run on 98 octane

     

    The thermostat is probably shagged as it doesn't get above 60. Plugs are due. Inlet including maf is clean

     

    Small exhaust leak near headers for first 30 seconds from cold start up

     

    Have run fuel injector cleaner, reset ecu and upper cylinder clean (seafoam) and it came good but a couple of months down the track and its running slow again.

     

    checked ecu and the errors are back.

     

    so i was going to get the leak checked, new thermostat and plugs but what about the cats. How can I be sure they are infact dead? TBH I really don't know where they are, I can see the front precats and the muffler under the handbrake - is the cat somewhere in between?

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