3.3TT KHARTUNERZ - NEW CATLESS SECONDARY DOWNPIPES Ark Performance

[Pnbnationsbest]

Enough already. The dyno was run by a muppet and is wrong. Move on already. We all know that the car is not making less power or slower than stock. Let dude go on loving his car! No 2.5" piping will create enough high pressure, scavenging or turbulence to impede the turbo.

 

[Callum]

Back on topic, that mechanic is out of his mind

Enough already. The dyno was run by a muppet and is wrong. Move on already. We all know that the car is not making less power or slower than stock. Let dude go on loving his car! No 2.5" piping will create enough high pressure, scavenging or turbulence to impede the turbo.

I can tell you my car feels faster than it was with the stock MP's.

 

[Tonkabob]

When I added the MPs a few months back I had no reason to believe there would be no gains. But I do regularly measure mods improvements doing before and after Dragy (0-60 and 1/4 mile) and 1/4 mile time slips. I'm AWD so traction is not an issue. My 0-60s where on the same day and same road, just an hour apart. I was also logging so IATs where not identical, but close. Just 2 runs before and after that install day. I've also done my 1/4 mile dragy in the exact same location and today am doing 1/4 mile at the track again. (I have about 10 slips with SSR on) If the gains can only be measured on a dyno what is the point? I want my car to be faster, sound better or look better. I'll know more tonight on if it is faster. Sound depends on if you have stock or after market catback. I have after market catback so am liking it better with stock MPs back on. I'm just trying to be helpful and share my info. I find it comical on the resistance of the best facts around on MPs. I don't feel strongly enough to go spend a couple hundred bucks on dynos.
Temps are looking to be a bit warmer today than my SSR MP visits but I think they will be close enough to see the differences. I would think the MPs would do a little bit but they certainly seem like the smallest HP mod you can make.

 

[Pnbnationsbest]

The giant benefit is EFFICIENCY OF POWER CREATION! I will bet my car that MP's on a dyno run by an actual tuner (someone who knows what they're doing) will pick up 8-10whp/wtq

 

[Tonkabob]

Enough already. The dyno was run by a muppet and is wrong. Move on already. We all know that the car is not making less power or slower than stock. Let dude go on loving his car! No 2.5" piping will create enough high pressure, scavenging or turbulence to impede the turbo.

No one is picking on the buyer. He has a better sounding car for $500. He also gets average +1 HP and +1 Tq. We are just debating the pros and cons of the part on its speed / HP merits and most people just want to go back to "it feels faster". I agree mine felt way faster and was shocked to see that it wasn't. That raspy angry sound is mean and sounds fast.
Also I think there is one more person getting a before and after Dyno with other mods on the car...

 

[MrSmoofy]

For me, I felt no speed/performance gain only that it was louder. Also, I see people mixing MP with DP again which are different parts in my mind. Primary DP, Secondary DP, Midpipe, then mufflers, four parts based on the diagrams I've seen.

 

[Christopher Léger]

For me, I felt no speed/performance gain only that it was louder. Also, I see people mixing MP with DP again which are different parts in my mind. Primary DP, Secondary DP, Midpipe, then mufflers, four parts based on the diagrams I've seen.

Everyone getting me confused so i got borla catback and just got ark secondsy dp.. are u telling me Mid pipe is the stock with that setting making an exhaust restriction for the flow?

 

[Pnbnationsbest]

Downpipes- connect directly to the exhaust side of the turbo

Midpipes- connect as an intermediary from downpipe to catback

Catback- exhaust section rear of your midpipes

 

[WildBill]

Downpipes- connect directly to the exhaust side of the turbo

Midpipes- connect as an intermediary from downpipe to catback

Catback- exhaust section rear of your midpipes

Note: that some are saying that a midpipe does not have a cat. So what you are referring to a midpipe they are refering to a secondary DP.

 

[WildBill]

Everyone getting me confused so i got borla catback and just got ark secondsy dp.. are u telling me Mid pipe is the stock with that setting making an exhaust restriction for the flow?

You have replaced everything except for the primary DP which most should not touch unless they are looking for a CEL and potential issues.

 

[Pnbnationsbest]

Note: that some are saying that a midpipe does not have a cat. So what you are referring to a midpipe they are refering to a secondary DP.

Did you read my post?

The MP has 2 cats, one on either side

 

[MrSmoofy]

Did you read my post?

The MP has 2 cats, one on either side

I call this the secondary down pipe which has the secondary cats it attaches to the primary downpipe and the mid pipe.

 

[Secondchance]

When I added the MPs a few months back I had no reason to believe there would be no gains. But I do regularly measure mods improvements doing before and after Dragy (0-60 and 1/4 mile) and 1/4 mile time slips. I'm AWD so traction is not an issue. My 0-60s where on the same day and same road, just an hour apart. I was also logging so IATs where not identical, but close. Just 2 runs before and after that install day. I've also done my 1/4 mile dragy in the exact same location and today am doing 1/4 mile at the track again. (I have about 10 slips with SSR on) If the gains can only be measured on a dyno what is the point? I want my car to be faster, sound better or look better. I'll know more tonight on if it is faster. Sound depends on if you have stock or after market catback. I have after market catback so am liking it better with stock MPs back on. I'm just trying to be helpful and share my info. I find it comical on the resistance of the best facts around on MPs. I don't feel strongly enough to go spend a couple hundred bucks on dynos.
Temps are looking to be a bit warmer today than my SSR MP visits but I think they will be close enough to see the differences. I would think the MPs would do a little bit but they certainly seem like the smallest HP mod you can make.

I cannot stress this enough... any results you get using a GPS based 0-60 calculator CANNOT be taken literally, nor can the results be used to suggest gains or losses in power. Traction, temperature, driver, wear of tires, the road, its condition, wind, air altitude ( which changes ) and so many other variables come into play.

Effective ways to measure the changes in power/torque from mod to mod are

1. going to the same dyno each time for new numbers under as close to the same conditions as possible

2. Multiple runs at the same race track, looking at your trap speed.

 

[Pnbnationsbest]

I call this the secondary down pipe which has the secondary cats it attaches to the primary downpipe and the mid pipe.View attachment 25144 View attachment 25146

28530 is the DP

28600 is the MP.

28650 is the beginning to the catback

28711 is the axle back, also part of the catback

Just because you're calling it a secondary DP doesn't mean you're right lol.

 

[MrSmoofy]

28600 is the MP.

28650 is the beginning to the catback

28711 is the axle back, also part of the catback

Just because you're calling it a secondary DP doesn't mean you're right lol.

Right or not my description makes more sense to me than yours. What I call the secondary downpipe that you call the mid pipe comes "down" from the primary downpipe off the turbo. After that is the mid pipe basically the middle of the car.

But whatever everyone has their own opinion just would be good if everyone referred to things by the same name.

 

[Pnbnationsbest]

That's literally my point.

The dp comes directly off of the turbo. The mp is in the middle of the dp and catback. The catback is back off the cats....hence catback. The axle back is back from the axle.

 

[WildBill]

Just because you're calling it a secondary DP doesn't mean you're right lol.

Please read post #1 made by the retailer. They are calling these secondary DPs. It has been detailed there to prevent confusion.
You are adding to to the confusion right now because you obviously think you are right and the others are wrong. Different platforms, tuners, or manufacturers may have different terminology.

 

[Secondchance]

Please read post #1 made by the retailer. They are calling these secondary DPs. It has been detailed there to prevent confusion.
You are adding to to the confusion right now because you obviously think you are right and the others are wrong. Different platforms, tuners, or manufacturers may have different terminology.

He is right, but so is the manufacturer. The "primary downpipe" is also commonly referred to as the "o2 housing" on numerous vehicles. Its length on the stinger is likely why its named differently. The secondary downpipes should in theory be called mid pipes, or part of the "long dowpipe" as some platforms have the option to buy it and the primary's together in one piece.

 

[Tonkabob]

Hit the track last night. Still seems the Mids don't do anything Sorry.

 

[Angel]

Hit the track last night. Still seems the Mids don't do anything Sorry.

View attachment 25209

You are running solid 11's.

Great job! You are killing it!