[phat8186]

Ok I think I got taken here but its all good, since I believe in karma....
A while ago I purchased what was sold to me as a catless downpipe for an f30 335xi
Now I messaged the person in advance if it was for the EWG N55 which I own a 2014 F30 EWG 6spd N55 AWD.
Moving forward I make the purchase, not realizing that this downpipe looked like an ER dp but in fact was a knock off. Once again no biggy right there are plenty of brands out there. When purchase was made I decided to buy brand new OEM exhaust clamps top and bottom, just to make installation that much easier.

Heres where the prob arose, there is no way in hell the OEM vband clamp that mates the dp to turbo will fit over this and close. Should I be looking into an aftermarket vband clamp.

Is this not the right dp for my car should I just buy another one and go with a brand name VRSF prob.
Help and guidance would be greatly appreciated

Heres the link from my original purchase
https://f30.bimmerpost.com/forums/sh....php?t=1512077

[Buckeyes]

That looks like the V-band for the DP to exhaust connection not the DP to Turbo. They are different. I’ve used the same clamps several times since every year I need to swap to cat OEM for emissions.

[phat8186]

Originally Posted by Trcb777

That looks like the V-band for the DP to exhaust connection not the DP to Turbo. They are different. I’ve used the same clamps several times since every year I need to swap to cat OEM for emissions.

I'm very aware they are different, as the dp to exhaust has tabs on the clamp.
The one I have pictured is the exact same one ordered.

[phat8186]

I'm so lost here

[phat8186]

Here is the dp to exhaust clamp..

[Buckeyes]

Maybe is a V-band clamp for a 7-13 and older pwg 3.5” DP??

[phat8186]

Originally Posted by Trcb777

Maybe is a V-band clamp for a 7-13 and older pwg 3.5” DP??

That was my next thought process but even searching bmw parts list. I still came up with the same vband clamps that were purchased.
Figured someone on the forum could point me in the right direction...

[50shadesofhockenheim]

Where's the ER stamp on it?

[Pray for Mojo]

It appears you have the correct clamp based on Real OEM, the other possible clamp is 18307606136, which is for the M235i and other N55s. Maybe that DP is meant for a different car?

https://www.realoem.com/bmw/enUS/sho...diagId=18_0976

[paimon.soror]

Originally Posted by E90 LCI

Where's the ER stamp on it?

It's not an ER.

It's either a CTS or an eBay knockoff

[phat8186]

Originally Posted by E90 LCI

Where's the ER stamp on it?

I stated in the original post it was a knock off...

[phat8186]

Originally Posted by Pray for Mojo

It appears you have the correct clamp based on Real OEM, the other possible clamp is 18307606136, which is for the M235i and other N55s. Maybe that DP is meant for a different car?

https://www.realoem.com/bmw/enUS/sho...diagId=18_0976

This is what I'm left to believe this downpipe will not work with my f30 ewg n55.

[Pray for Mojo]

Only way to know would be to compare the inlet and outlet on a DP known to work on your car.

[M2Rush]

The size of your DP looks correct. The dealership most likely gave you the wrong clamp(for the 3.5" version). I too went into Realoem, bought the gasket from the dealership and got a wrong one... It's not the dealers fault, like me you probably provided them with a part number, just get it exchanged if this is the case. If you bought a gasket, check that as well. The gasket should go on the outside of the inner lip, not over the top(it will side right on top of the lip if you got the wrong/smaller one).

[M2Rush]

Yup 4.6" is the OD size of the OEM one, just measured and I do recall seeing those numbers before when I measured my AR DP.

[phat8186]

Originally Posted by M2Rush

Yup 4.6" is the OD size of the OEM one, just measured and I do recall seeing those numbers before when I measured my AR DP.

You sir just gave me a little comfort to this whole dp nonsense lol.
The OEM clamps I got from ECStuning I doubt they will take it back at this point.
I just want to install this already if it fits my car.

I dont want to take my own dp off to then not have the right clamp when the original one breaks to dust on me.

[phat8186]

Originally Posted by M2Rush

The size of your DP looks correct. The dealership most likely gave you the wrong clamp(for the 3.5" version). I too went into Realoem, bought the gasket from the dealership and got a wrong one... It's not the dealers fault, like me you probably provided them with a part number, just get it exchanged if this is the case. If you bought a gasket, check that as well. The gasket should go on the outside of the inner lip, not over the top(it will side right on top of the lip if you got the wrong/smaller one).

I did not get the gasket, I'm gonna take a trip to my dealer tomorrow and see what they come up with. They all tell me that the vband clamp is the same for all, which makes no sense there is a 3.5v and a 4v do they not know this grrrrr.

[phat8186]

Can anyone point me to the OEM BMW part# for a 4" vband clamp

[Pray for Mojo]

The part number I posted should be a 4"

[HKD126]

Why not just reuse the V Band clamp that is on the car? I’ve done it like 5 times with my stock cat and ER downpipe for emissions testing. That downpipe size looks correct for the EWG car. It looks like you have a PWG V Band clamp

[prosty]

18307606136 is the correct P/N for the 4" upper
I bought P/N 11657620508 from BMW and that was the 3.5" so it didn't fit my EWG DP
I reused the old one, those are usually in better condition than the lower ones.

[phat8186]

Originally Posted by HKD126

Why not just reuse the V Band clamp that is on the car? I’ve done it like 5 times with my stock cat and ER downpipe for emissions testing. That downpipe size looks correct for the EWG car. It looks like you have a PWG V Band clamp

I'd prefer to have a new vband clamp on top. I'd bet that it prob can be reused but I want taken any chances and having a new one on deck wouldn't hurt..