DIY catless DP's from stockers?

[M3SSY]

Has anyone knocked the factory catalyst out of the stock dp's yet to see if they make more power?

[M3ANS55]

Originally Posted by M3SSY

Has anyone knocked the factory catalyst out of the stock dp's yet to see if they make more power?

oh boy.. please dont do this, downpipes are 900$ shipped..

[Mike@N54Tuning.com]

Originally Posted by M3ANS55

oh boy.. please dont do this, downpipes are 900$ shipped..

+1

I can't imagine how much that would cost from BMW once you sell the car and have to go back to stock.

Mike

[tom @ eas]

The amount of effort needed isn't worth it. Get a set of catless DPs and call it a day.

[CaryTheLabelGuy]

While I'm mildly interested in this as well, it certainly isn't worth it to find out, unless somebody has a stock set of DPs that have no home.

[M3ANS55]

Originally Posted by Mike@N54Tuning.com

+1

I can't imagine how much that would cost from BMW once you sell the car and have to go back to stock.

Mike

COUGH* $1,150.00 (suggested retail) COUGH*


.....each...

[M3SSY]

I am sure in a few years stock DP's will be worth their scrap weight...

people who get visual inspections might benefit from them

[M3ANS55]

Originally Posted by Railgun

Less than $900...

LOL thats why i put suggested retail, includes crazy bmw markups, cost is under $700.00

[r33_RGSport]

M3SSY why do that? Catless downpipe doesn't cost as much as OEM one. Also the hassle to knock those expensive material down the drain.
Trust me, I've done 1 back in the Honda day, I gotta pay more when I need to get the car smogged.
I suggest you to jump on the ER catless downpipe sale that is going to end tomorrow.

[M3SSY]

I was just asking questions and pointing out that in places that do smog and do a visual this might be a good option to couple with a JB4, you will still pass smog and visual but you wil have "catless" downpipes..

will it make power? idk...
will it sound like crap? idk..

was just asking questions and isn't it funny how all the vendors are saying no get DP's

anywho...

[M3ANS55]

Originally Posted by M3SSY

I was just asking questions and pointing out that in places that do smog and do a visual this might be a good option to couple with a JB4, you will still pass smog and visual but you wil have "catless" downpipes..

will it make power? idk...
will it sound like crap? idk..

was just asking questions and isn't it funny how all the vendors are saying no get DP's

anywho...

i'm not a vendor and everyone who has posted has said dont do it. those "vendors" also are pretty well versed when it comes to what to do and what not to do with your car. i also think they realize you can get downpipes anywhere...not just them... but sure, be the first to do it. props to you for it

[Bowser330]

I thought I heard of someone doing it on the n54... I say do it.
But make sure you can pick up a set of used stockers for a good price in case you need them.

[r33_RGSport]

Originally Posted by M3SSY

I was just asking questions and pointing out that in places that do smog and do a visual this might be a good option to couple with a JB4, you will still pass smog and visual but you wil have "catless" downpipes..

will it make power? idk...
will it sound like crap? idk..

was just asking questions and isn't it funny how all the vendors are saying no get DP's

anywho...

Well, I bet you we all the vendors are started as end user in this car modding scene.
We all answering your question and give you a suggestion as an expert, since many of us are been in this scene for a while.
I guess either you can PM the Admin to ban us the vendors not to post in the public thread or put it in the title that you don't want an expert or vendor to answer your question.

[M3SSY]

Originally Posted by r33_RGSport

Well, I bet you we all the vendors are started as end user in this car modding scene.
We all answering your question and give you a suggestion as an expert, since many of us are been in this scene for a while.
I guess either you can PM the Admin to ban us the vendors not to post in the public thread or put it in the title that you don't want an expert or vendor to answer your question.

please go back and read my original question...

I asked a question out of curiosity, I know it made power in my old s4, was just curious if anyone had done it, because my search came up blank...

[nathangracey]

Won't be buying anything from RG sport

[Myaddiction]

Originally Posted by M3SSY

I was just asking questions and pointing out that in places that do smog and do a visual this might be a good option to couple with a JB4, you will still pass smog and visual but you wil have "catless" downpipes..

will it make power? idk...
will it sound like crap? idk..

was just asking questions and isn't it funny how all the vendors are saying no get DP's

anywho...

On stock turbos they will make just as much power as any 3" down pipe. The outlet from the turbine is less then two inches. Simple physics.

Actually they will sound the same as a DP as well.

You can buy them used for 500 bucks. In a few years you can go to most shops and pick them up for a six pack of beer because they will have a stack left over from installs. Its the same cycle for every car. Same for my N54 motor and for my GTR.

But they dont make anyone money and are not as sexy so you won't hear about it. No magic in a 3in pipe thats less then two feet long. No exhaust scavaging effect post turbo etc...

If you have E85 around you its not even worth it until you upgrade the turbos. It's the tiny turbines that limit power. Ask Vagas Turbos...

[Myaddiction]

Originally Posted by M3ANS55

LOL thats why i put suggested retail, includes crazy bmw markups, cost is under $700.00

Actually, they pay 150.00 per set when they buy in a large volume... 300.00 per set when they buy 30 at once...

[M3ANS55]

Originally Posted by Myaddiction

Actually, they pay 150.00 per set when they buy in a large volume... 300.00 per set when they buy 30 at once...

ok, i just went off the dealerspeed, dcs net by part number cost vs suggested retail. you must work in parts or for bmw distribution at one of the warehouses since i have no idea how to come up with those numbers..

[Myaddiction]

Originally Posted by M3ANS55

ok, i just went off the dealerspeed, dcs net by part number cost vs suggested retail. you must work in parts or for bmw distribution at one of the warehouses since i have no idea how to come up with those numbers..

Sorry, I thought you were talking aftermarket DPs.

[jeff@autocouture]

the stock downpipes aren't very restricted, it wouldn't be worth it with the design of the stock downpipes, definitely better off getting an actual set