o2 sensor

Hey guys, over the past few months a bit of an issue has developed with my 05 AUDM type s. The car has a tegiwa intake, toda racing header, nvidia n1 catback, no cat, stock internals and a ktuner ECU. The car came with all of these mods installed. The first sign of any problem was a very low...

Hi guys, I'm new here but I'd really like some help with my DC5R. I bought this car in January and it had all sorts of problems. Thankfully I've got them all sorted except one - the exhaust system. This is my first tuner and I'm still learning quite a bit. When I bought it, the exhaust tip...