A decat downpipe is a pipe which replaces the catalytic converter on a cars exhaust system. The decat pipe replaces the pipe which normally runs from the turbo or engine manifold and connects to the exhaust system.

Does downpipe increase horsepower?

Conclusion. Upgraded downpipes provide great increases in horsepower and torque on turbocharged vehicles by allowing exhaust gasses to flow easier as they leave the turbo. Paired with the appropriate software, a downpipe can provide significant gains and make a vehicle more fun and engaging to drive.

Is a Decat the same as a downpipe?

A downpipe and decat are the same except the decat downpipe has no cats in it, I'd say you will need tuning if you go for decat, all my past experience tells me downpipe decats alter the back pressure the most out of any exhaust mod, plus you will get CEL which will need to be deleted by Jb4.

What is the point of a Catless downpipe?

Catless downpipes come without one. Catalytic converters clean exhaust gases as they pass through a catalyst. This deals with the smell from the raw exhaust fumes. If you get a catless version, then the vehicle will emit a noticeable odor.

Does Catless downpipe increase horsepower?

An aftermarket downpipe (MATOLA Performance Downpipe) usually larger in diameter and it either use a catted or catless configurations. Which able to create more power to your vehicle because it with high flow unit which allowed the turbo move gases away from the turbine more efficiently.

Is a Cat Delete Worth It?

Should I go Catless or high flow?

Performance Difference

While high-flow is a significant improvement to OEM, it still does not match catless. For people looking to aggressively tune their N55, we recommend catless. If you are just trying to send it with an intake/tune/downpipes, then a high-flow option should suffice.

Do I need a tune for Catless downpipe?

Bump on this. Seems there is no damage to engine in running a catless downpipe without a tune, and no performance benefit.

Does downpipe make your car louder?

Downpipes (catless) will make the exhaust sound more aggressive and deep.

Is Catless louder than Catted?

How much louder are catless headers from catted? Both are significantly louder. The high flow cats available for most headers don't go a lot for volume, but control rasp some.

Are downpipes worth it?

For power, if you don't plan on tuning then don't waste your time with a downpipe. You're not going to notice much aside from throttle response and a deeper note/louder burbles. If you were going to tune then I would say a downpipe is 100% worth it. CEL can be fixed by a spacer, it does work.

Are Decat downpipes illegal?

Yes, decat pipes on your vehicle are legal, and you can enjoy the smooth performance of your engine all year long. However, certain considerations need to be kept in mind, such as the annual MOT test. Get your decat exhaust pipes from Turborevs today and take your car's performance to new heights.

Will a Decat pipe improve performance?

Advantages of Decat Pipes

This can create back-pressure on the engine, lowering overall performance. By removing your catalyst, your car can benefit from the smooth flow of exhaust gases, resulting in more horsepower and better performance.

Can you pass an MOT with a Decat?

Registered. If the vehicle will go through an emissions check with the de cat on it will pass the mot.

Does a downpipe make your car pop?

By only changing the downpipe and leave the exhaust stock, will it make louder pops and crackles? Yes. That's the way mine is and it's louder.

Does downpipe add torque?

This enables the movement of more exhaust gases at a higher speed, allowing your turbo to spin quicker. In addition to the increased responsiveness of your turbo, you can expect an increase of 15-20 horsepower and torque. Hence, an Armytrix downpipe allows more and easier access of air into your engine.

How much horsepower does a downpipe need?

It's generally accepted that installing a downpipe will add just 10 to 20 horsepower, but that gain is noticeable when the engine is revved up.

Are downpipes only for turbo cars?

A downpipe IS for turbo cars, but for all practical purposes we still call our n/a frontpipes "downpipes".

Will a Catless downpipe make my car louder?

It will be Very noticeable! I swapped from catless to catted and wasn't that big of a difference. But from stock to "any" downpipe will be a good bit louder. Especially if you have a more free flowing cat back.

Is a Catted downpipe quieter?

A downpipe(even catless) isnt going to change the sound of the car that much. The catback is where 97% of the change in sound comes from.

What is the difference between a downpipe and a straight pipe?

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.

What is a Catless exhaust?

A catless downpipe is one that is not fitted with a catalytic converter. In the absence of the converter, the exhaust fumes suddenly take on a rather unpleasant odor. That's because those nasty respiratory-attacking fumes are not being cleaned up as they should be.

How much does a tune cost?

Money equates to time.

Each setup is different, and also depending on what type of system is being used (piggy back, chip, stand-alone, supercharged, naturally aspirated, street or race only, etc) tune costs can range from $250 to $1500. Don't be afraid to spend money on a good tune.

Will a downpipe void my warranty?

Well-Known Member. It should not void any part of your warranty, but a dealership may void it anyway. As Mark said above, it is probably not worth the fight once it has been denied, even if you are in the right.

Can you shoot flames with a Catted downpipe?

You'll need to go catless. A racing cat could shoot flames, but you'll also get a CEL since it's still letting out unburnt fuel (for the flames). That said, the car will shoot flames with a catless downpipe and no tune. You'll need a straight exhaust to see them before they burn out in the muffler though.

Whats better high flow cats or no cats?

There are no noticeable performance gains in using off-road pipes (no cats) over high flow cats. If you go with no cats it will sound a bit raspier (my opinion), and your car will smell (fact). The smell is unburnt fuel, oil, etc.

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