Which downpipes to buy?
03-15-2017, 05:01 PM
#26
MBWorld Fanatic!
Higher EGV is only material where you are trying to improve scavenging effects of the exhaust design by increasing velocity, predominately on naturally aspirated cars, and even then it will have barely any impact. Turbos don't care. Give a turbo the biggest diameter, shortest length pipe possible and its happiest.
Would be great if people would stop trying to pretend they are smart, and actually provide the op with an experience based opinion....
Given he has an AWD car, weistec (or any turbo back) is out of the question. That means that any mid pipe style DP is in play. Frankly Catted DP's are not worth doing since you will mostly be getting a slight sound increase with little performance benefit. You might as well do an axle back or muffler delete for that. All mid pipe DP's provide approximately the same benefits. Go with cheapest option, or get local exhaust shop to custom make one for you for half the price of most of the off the shelf ones.
Would be great if people would stop trying to pretend they are smart, and actually provide the op with an experience based opinion....
Given he has an AWD car, weistec (or any turbo back) is out of the question. That means that any mid pipe style DP is in play. Frankly Catted DP's are not worth doing since you will mostly be getting a slight sound increase with little performance benefit. You might as well do an axle back or muffler delete for that. All mid pipe DP's provide approximately the same benefits. Go with cheapest option, or get local exhaust shop to custom make one for you for half the price of most of the off the shelf ones.
03-15-2017, 09:36 PM
#27
MBWorld Fanatic!
Higher EGV is only material where you are trying to improve scavenging effects of the exhaust design by increasing velocity, predominately on naturally aspirated cars, and even then it will have barely any impact. Turbos don't care. Give a turbo the biggest diameter, shortest length pipe possible and its happiest.
Would be great if people would stop trying to pretend they are smart, and actually provide the op with an experience based opinion....
Given he has an AWD car, weistec (or any turbo back) is out of the question. That means that any mid pipe style DP is in play. Frankly Catted DP's are not worth doing since you will mostly be getting a slight sound increase with little performance benefit. You might as well do an axle back or muffler delete for that. All mid pipe DP's provide approximately the same benefits. Go with cheapest option, or get local exhaust shop to custom make one for you for half the price of most of the off the shelf ones.
Would be great if people would stop trying to pretend they are smart, and actually provide the op with an experience based opinion....
Given he has an AWD car, weistec (or any turbo back) is out of the question. That means that any mid pipe style DP is in play. Frankly Catted DP's are not worth doing since you will mostly be getting a slight sound increase with little performance benefit. You might as well do an axle back or muffler delete for that. All mid pipe DP's provide approximately the same benefits. Go with cheapest option, or get local exhaust shop to custom make one for you for half the price of most of the off the shelf ones.
03-15-2017, 09:44 PM
#28
MBWorld Fanatic!
Muffler delete does not sound that bad on these cars. You can have an axle back made for less than $500. No need to pay the MB tax to vendors selling you **** anybody can do. DPs and exhaust are not magic. Any one can make them. I gaurantee you catted DPs will make little to no more than a custom axle back
03-15-2017, 10:05 PM
#29
Junior Member
Thread Starter
Originally Posted by KLR CLS
Higher EGV is only material where you are trying to improve scavenging effects of the exhaust design by increasing velocity, predominately on naturally aspirated cars, and even then it will have barely any impact. Turbos don't care. Give a turbo the biggest diameter, shortest length pipe possible and its happiest.
Would be great if people would stop trying to pretend they are smart, and actually provide the op with an experience based opinion....
Given he has an AWD car, weistec (or any turbo back) is out of the question. That means that any mid pipe style DP is in play. Frankly Catted DP's are not worth doing since you will mostly be getting a slight sound increase with little performance benefit. You might as well do an axle back or muffler delete for that. All mid pipe DP's provide approximately the same benefits. Go with cheapest option, or get local exhaust shop to custom make one for you for half the price of most of the off the shelf ones.
Would be great if people would stop trying to pretend they are smart, and actually provide the op with an experience based opinion....
Given he has an AWD car, weistec (or any turbo back) is out of the question. That means that any mid pipe style DP is in play. Frankly Catted DP's are not worth doing since you will mostly be getting a slight sound increase with little performance benefit. You might as well do an axle back or muffler delete for that. All mid pipe DP's provide approximately the same benefits. Go with cheapest option, or get local exhaust shop to custom make one for you for half the price of most of the off the shelf ones.
03-15-2017, 10:49 PM
#30
MBWorld Fanatic!
Muffler delete does not sound that bad on these cars. You can have an axle back made for less than $500. No need to pay the MB tax to vendors selling you **** anybody can do. DPs and exhaust are not magic. Any one can make them. I gaurantee you catted DPs will make little to no more than a custom axle back
What are you guaranteeing with your statement?
Last edited by TMC M5; 03-15-2017 at 10:51 PM.
03-16-2017, 12:03 AM
#33
MBWorld Fanatic!
If your going to do downpipes I think it only really makes sense to do catless or don't bother with them at all as catted gains are minimal.
03-16-2017, 10:30 AM
#34
MBWorld Fanatic!
03-16-2017, 05:37 PM
#36
So far I've had a great experience with my WFO Downpipes they fit like a glove, they have custom Dents strategically placed in the Downpipe for maximum turbulence hahahah.
I think some folks over think things way to much. I'm sure at around 800HP the need for true 3" downpipes would be necessary. My car seems to work really well with this $100 setup. Just food for thought. Someone say cookies??
I think some folks over think things way to much. I'm sure at around 800HP the need for true 3" downpipes would be necessary. My car seems to work really well with this $100 setup. Just food for thought. Someone say cookies??
