Accessport tuning recommendations?

Rbuntingwrx said:

Well currently the car is on a base map and is running fine, I've read it's okay but not recommended to run a downpipe with no tune, so would it hurt to just run stage 1 with the down pipe untill I get a few more parts I wanted for stage 2?

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Yes, it would cause engine damage (and eventually failure) to use a stage one map on a car with an aftermarket downpipe.. The short answer as to why it would cause damage is that a stage one map is counting on the restriction of a stock downpipe. With an aftermarket downpipe the turbo operates more efficiently, and is therefore able to achieve higher load cells in the map than it would with a stock downpipe. At least with the stock map, those load cells are blank.. the ECU doesn't know what it should do in terms of fueling, timing, etc, resulting in predetonation and knock; which will damage the engine via extreme cylinder pressures. I'm not sure exactly how high the load cells are tuned in Cobb's stage one map.. but considering the fact that the car they used to develop the map on was running a stock downpipe I would assume nothing is tuned beyond the load levels that the car was able to achieve during their tuning process.

Why exactly do you want to wait to get more parts when your car already has the modifications needed to run the stage two map? Both maps come with the AP, and it's the exact same method to flash them.. so why would you select what you know is the wrong map, when you can just scroll down one line and select the right map for the car..

For what it's worth, all the Cobb OTS maps that come with the AP are base maps.