Incorrect. It may not throw fueling off to the point of a DTC being tripped, but you need to rescale the MAF for the intake.Originally Posted by azsun
It's exactly as the names describes. A TBE replaces the exhaust from the turbo, back. A CBE replaces the exhaust from the catalytic converters, back. An ABE replaces the exhaust from the rear axle, back.Originally Posted by azsun
The most important part of freeing up exhaust flow for more power is getting rid of the downpipe. The catback isn't really that important with the stock turbo in terms of restriction, so you can keep it stock.Originally Posted by azsun
A custom reflash from a competent tuner is always better than a base map. You'll get more power, and a tune that's designed for your car/fuel. Be aware that Cobb does not make a map for the K&N intake, so you'll need to either remove that intake or go straight to a custom tune.