Why did EC stop making Long Tube Headers?
01-21-2015, 10:35 AM
#4
Member
I can believe it, I have them on mine and there's a small leak at the slip fit connection, but only on one side, I've taken it apart many times to try and fix it and nothing works. I'll never buy any type of slip fit header in the future!
01-21-2015, 02:18 PM
#7
Former Vendor of MBWorld
When we first started making headers, we also had a slip collector design. After testing on my own car, we ditched that style. Stainless steel grows and contracts with heat cycles. So you think the slip collector makes scenes. The reality is the stainless steel tubing never comes back 100% to where it originally was when the system cools down. All this moving around can cause leaks and it does not take much to cause a leak.
With OBDII cars, any leak in the header system before the primary o2 sensor will make the ECU think there is a lean condition. Resulting in the ECU adding fuel. End result is you run fat, lose power, kill o2 sensors, the list goes on.
On muscle cars that run on a carburetor, having a slip fit collector leak isn't even a real issue, since they have no o2 sensors controlling the engine.
The best bet is to completely weld a slip fit collector on. Doing that will give you years of trouble free performance.
With OBDII cars, any leak in the header system before the primary o2 sensor will make the ECU think there is a lean condition. Resulting in the ECU adding fuel. End result is you run fat, lose power, kill o2 sensors, the list goes on.
On muscle cars that run on a carburetor, having a slip fit collector leak isn't even a real issue, since they have no o2 sensors controlling the engine.
The best bet is to completely weld a slip fit collector on. Doing that will give you years of trouble free performance.
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01-21-2015, 04:22 PM
#8
MBWorld Fanatic!
When we first started making headers, we also had a slip collector design. After testing on my own car, we ditched that style. Stainless steel grows and contracts with heat cycles. So you think the slip collector makes scenes. The reality is the stainless steel tubing never comes back 100% to where it originally was when the system cools down. All this moving around can cause leaks and it does not take much to cause a leak.
With OBDII cars, any leak in the header system before the primary o2 sensor will make the ECU think there is a lean condition. Resulting in the ECU adding fuel. End result is you run fat, lose power, kill o2 sensors, the list goes on.
On muscle cars that run on a carburetor, having a slip fit collector leak isn't even a real issue, since they have no o2 sensors controlling the engine.
The best bet is to completely weld a slip fit collector on. Doing that will give you years of trouble free performance.
With OBDII cars, any leak in the header system before the primary o2 sensor will make the ECU think there is a lean condition. Resulting in the ECU adding fuel. End result is you run fat, lose power, kill o2 sensors, the list goes on.
On muscle cars that run on a carburetor, having a slip fit collector leak isn't even a real issue, since they have no o2 sensors controlling the engine.
The best bet is to completely weld a slip fit collector on. Doing that will give you years of trouble free performance.
good to go
03-03-2015, 01:58 AM
#12
MBWorld Fanatic!
Join Date: Feb 2013
Location: Norther CA
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2014 cls63 a amg. 2018 AMG GTR
I bet this is why I smell fumes so bad in cabin. I have to turn on the recirculating button or it gases me out 
If I just have fan on or ac without hitting that button it is really bad. With it on it isnt really noticeable so I learned to live with it. 
I wonder if that is why. I should get mine welded.
Would welding it make it harder to uninstall headers ?
If I just have fan on or ac without hitting that button it is really bad. With it on it isnt really noticeable so I learned to live with it. I wonder if that is why. I should get mine welded. Would welding it make it harder to uninstall headers ?
03-04-2015, 02:43 AM
#13
MBWorld Fanatic!
I had slip fits on mine and they were not good. Easy to install but leaked constantly. Kept getting CEL. Later found out my motor mount was bad so that didn't help either. If you put exhaust putty, that should help, but with that motor torquing, I am sure they'll leak again eventually. If you weld them, you'll never get them back out again .. if you can even weld all the way around each tube when it is in place.
03-04-2015, 03:37 AM
#14
I saw some fully welded long tube headers for SL55. They looked very similar to E55 ones shown here, but maybe something was different.
Is it really impossible to install/remove these slip on headers if they're welded?
Is it really impossible to install/remove these slip on headers if they're welded?
03-08-2015, 04:21 PM
#15
Out Of Control!!
I'm running the EC mid lengths and so far so good. The downpipe they included was useless though. My installer had to cut the pipe at the flange angle it slightly and weld it together again. In reality that's no big deal since the whole exhaust was getting re engineered
