E90 320i decat

[PaulWW]

So my e90 has 140k on the clock and has started farting white smoke. So the dreaded valve seals are going to be done. Just deciding on whom to take it to.

Now, what would be the benefit of a decat at the same time?

My logic tells me that the cat must get clogged if oil is being burned.

Thoughts?

Sent from my SM-N920C using Tapatalk

 

[that_guy_Ettiene]

Speak to John (BMW Leo Hease Hatfield).
Awesome pricing on valve steam seals replacement.

From my S7_Edge

 

[Teezy_F30]

Speak to John (BMW Leo Hease Hatfield).
Awesome pricing on valve steam seals replacement.

From my S7_Edge

+1 // they had a special running not too long back

 

[PaulWW]

Speak to John (BMW Leo Hease Hatfield).
Awesome pricing on valve steam seals replacement.

From my S7_Edge

Sadly I am based in Cape Town

Sent from my SM-N920C using Tapatalk

 

[momo1]

Yip will definitely clog up your cats.
I had mine removed on my old 120i for about R850 2years ago.
really helps the engine breath better, changes the tone of the exhaust and avery very slight up in power, with consumption also going down about 0.5l/100km , I thought it was worth it.

 

[GoCart]

Yip your cats will definitely clog up your cats.
I had mine removed on my old 120i for about R850 2years ago.
really helps the engine breath better, changes the tone of the exhaust and avery very slight up in power, with consumption also going down about 0.5l/100km , I thought it was worth it.

Many cats :=):

If you can get it done cheap, and in SS, then do it, there will be a ever so slight improvement in efficiency, but doubt you will even notice.

 

[PaulWW]

My thoughts are that the clogged cat will restrict breathing. Effectively causing back pressure

Sent from my SM-N920C using Tapatalk

 

[GoCart]

My thoughts are that the clogged cat will restrict breathing. Effectively causing back pressure

Sent from my SM-N920C using Tapatalk

I agree, but are the cats clogged?

 

[PaulWW]

My thoughts are that the clogged cat will restrict breathing. Effectively causing back pressure

Sent from my SM-N920C using Tapatalk

No idea. Just applying some logic.

Will chat with the mechanic

Sent from my SM-N920C using Tapatalk

 

[GoCart]

My thoughts are that the clogged cat will restrict breathing. Effectively causing back pressure

Sent from my SM-N920C using Tapatalk

No idea. Just applying some logic.

Will chat with the mechanic

Sent from my SM-N920C using Tapatalk

Logic is always good.

My experience is that cats don't clog easily, I know of diesel cars with 400,000Km+ running original exhausts.

I would say though, if you have been running your car for a very long time with the busted seals, never giving the exhaust time to heat up properly, there might be a possibility of some clogging.

 

[PaulWW]

Let's see what SMG say about it. They are busy doing the valve stems and oil separator at the moment

Sent from my SM-N920C using Tapatalk

 

[Neve24]

Hi PaulWW,

What did SMG quote you for the valve stem seals?

Sent from my LenovoA3300-HV using Tapatalk

 

[PaulWW]

Valve stem seals, sump breather, leak on oil filter housing, leak on tensioner pulley = R11.5k [LOUDLY CRYING FACE]

Sent from my SM-N920C using Tapatalk

 

[PaulWW]

Hi PaulWW,

What did SMG quote you for the valve stem seals?

Sent from my LenovoA3300-HV using Tapatalk

Sorry did not copy you on my reply.

Sent from my SM-N920C using Tapatalk