Got stage 1 ECU tune, DSG tune, pops and crackles done earlier today. Late last week tried to find a CTS downpipe but none available locally or could get it to me by today so it missed the cut.
Some pictures and details.
Etuners Factory
Baseline Runs
New Tune Being Uploaded, BMC Drop In Filter Installed
New Tune Runs
Results
Videos
Inside the car during one of the power runs. As you can see transmission holds at 6000rpm in this run.
Outside the car during one of the power runs, tried to use the super slow motion on the Galaxy S9+ but you need a lot of light to not have the flickering effect. Did not turn out as I wanted to.
Max 165kw@4 wheels (red line). Green line was a smooth run, red line car was sitting at 6000rpm then cutting out on the dyno for some reason. Tried a few more times and kept doing the same thing thing, could not work out why it was doing this. We took it off the dyno and tested it on the road. Road test pulled hard all the way to just under 7000rpm with no problems. Gordie thought it could have been either the dyno holding the car at 6000rpm or the transmission cutting power while on the dyno.. We did do around 10 power runs so car was 'warm'.
Seems the main limiting factor is the stock IS20 turbo which is peaking out, plenty left in the injectors and fuel pump. IS38 is a straight bolt in , might have to consider this next...
With the 18's dyno readings I suspect would have been higher, as rolling resistance make a difference.
Either way the car was not doing on the road what it was doing on the dyno.
Verdict
Huge improvement all through the rev range especially in mid-range, punches through the gears with so much more urgency to 7000rpm. In stock tune from 2nd to 3rd and 4th to 5th the transmission would hold the gear for a long time before changing near 7000rpm. Only gave it a few runs on the way home as was in peak hour traffic, could not go back to stock tune now.
Launch control now set to 4000rpm. First launch after tune wheel spin half way through 1st gear, it made me laugh as it surprised me. Need to do a video on an empty stretch of road soon. Launch is brutal and should surprise a few cars at the traffic light drags.
Pops and crackles is programmed into 'Sport' mode. Outside the car can hear it pop and crackle under the drivers side a bit, cant hear anything from the rear, the large resonator and even larger muffler is stopping the noise. Not sure if the resonator delete would even help, will need a custom rear muffler along with resonator delete to make it sound like the GTI/R's as there's nothing off the shelf available.
Was a pleasure to work with Etuners and Gordie. Hopefully he does me a great deal on an IS38 upgrade
More videos to come once I get a chance to record them...
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Originally Posted by Janus77
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