"Boost creep is a condition of rising boost levels past what the predetermined level has been set at. Boost creep is caused by a fully opened Wastegate(s) not being able to flow enough exhaust to bypass the housing via the Wastegate(s) itself.
A common misconception is that a catless downpipe will immediately make more power. This is NOT the case for most vehicles. Aside from not making any additional power over a high flow catted downpipe, a catless downpipe is bad for the environment and can also be bad for you, your community, and your engine.
Downpipes are generally the single most restrictive point of an exhaust. Yes, you will have power gains, more so than if you replaced any other part of the exhaust. On the sound note, DP's are a smart way to go as the car will be considerably quieter than installing a cat-back.
And, to answer the most important question, a turbo-back will gain approximately 20 hp.
Cats deaden the sound, stock you have two in the downpipe, so catless will be noticeably louder, where a catted one won't be much different.
It will never automatically void your warranty but if one of your turbos fail prematurely they could blame it on your downpipe because of the increased spool and the turbo running outside of it's designed spec.
Aftermarket downpipe definitely makes a car louder and sound more aggressive. This is because aftermarket downpipes are louder than stock and they reduce the backpressure in exhaust.
A stage 2 tune involves fitting a turbo-back exhaust on turbocharged vehicles or a cat-back exhaust system on non-turbocharged vehicles. In either case, these systems are designed to improve airflow from the engine. They are also well-known for improving the sound of a car.
Why should I buy a downpipe?
- 1.Remove the resistance of unnecessary bends. The factory downpipe can come with several 'unnecessary' bends, which one by one creates resistance and decreases the power of your turbo.
- Boost your horsepower and get the most out of chiptuning.
- Be more efficient with the given resources.
Up-pipes allow your engine to “breathe” more efficiently, dropping the exhaust gas temperature and boosting your horsepower and torque. They'll also help you achieve the smooth, deep rumble iconic to diesel vehicles.
Technically, the “downpipe” section of an exhaust system connects the headers or exhaust manifold to the catalytic converter(s). However, on a vehicle equipped with a turbocharger, an after-market downpipe can offer a significant improvement in performance.
Well, an uppipe routes exhaust to the turbo, to spool it up to produce boost. A downpipe begins the exhaust gases exit out the back of the car. Catback means a system that replaces the stock pipes from the cat (catalytic convertor) to the back of the muffler(s).
They are what carries the exhaust gasses to the hot side turbine wheel. More rpm = more exhaust thus spinning the turbo faster. Allowing more air on the cold side of the turbo creating more "boost".
Active member. They do fit fine.
Catless you need a tune, catted you really should have a tune, but you can get away without it highly not recommended. Its always best to tune your car. Boost creep is a possibility with both, a given with a catless dp.
Yes. Yes, installing a catless DP will throw a code, and you need a tune to have the code auto-erased.
Running catless downpipes with no tune is fine. You will not take 100% advantage of what Catless DP offer but you will not damage your engine.
A downpipe on any turbocharged engine, if well designed, can have a positive effect on performance. This means that the turbo will spool faster, possibly hold more boost, and the motor should also move more air per stroke. In theory this sound great but numbers are even better.
In general, these are some prices you can expect to pay for guttering: $30 to $35 per lineal metre for vinyl (PVC) guttering. $30 to $50 per lineal metre for zincalume. $45 to $67 per lineal metre for colour coated zincalume.
Straight piping a car is when you have no cats, mufflers or resonators in your system. Its just a straight pipe (hence the name) back. A downpipe is something found on turbo cars, you won't need to worry about that. The exhaust you have linked is a cat back.
