130i Decat Question

[Antec]

Hi guys,

Quick question. Does the 1006 130i have two cats or four?

I called powerflow for a quote on a decat pricing and they were not sure if its got two (part of the manifold) or four (two by the manifold and two further down)

Also he mentioned that the cats can't be totally removed if its part of the manifold and only hollowed out? But if its not part of the manifold they can just replace it with piping.

BTW the branches that were advertised on here a will back for the 130i, will those replace the cats if fitted? i.e. if i fit the branch i would basically have done a decat as well?

Help please!

Thanks,
D

 

[bullet24]

Hi

I am have the same question RE decat on the 130i, mine is a 2006.

Oo, and Hallo all, my first post here on BMWFan.

Regards
Paul

 

[Reese130]

the cats are in the manifold. if you fit a branch the cats will be gone:thumbs: did it to my 130i when I still had it. it will be extremely difficult to hollow them out because of their position, you definitely wont be able to replace them with piping.

 

[Twinz]

I seem to be the only one singing the same song about decatting cars - prepare yourself for poor performance and trouble if you not going to tune the car properly AND deal with the emission related hurdles.

The "older" Vehicles from e46 and older seem easier to decat without developing exhaust related issues such as high fuel consumption and lots of noise without power. Cats removed from new model bmws will beg for the cats to be replaced.

Antec...dont decat your 130. Find a good tune (first) that can also disable those pesky emission trouble codes which you are bound to get - then consider the decat or a complete exhaust system.

just my penny...

 

[Reese130]

I seem to be the only one singing the same song about decatting cars - prepare yourself for poor performance and trouble if you not going to tune the car properly AND deal with the emission related hurdles.

The "older" Vehicles from e46 and older seem easier to decat without developing exhaust related issues such as high fuel consumption and lots of noise without power. Cats removed from new model bmws will beg for the cats to be replaced.

Antec...dont decat your 130. Find a good tune (first) that can also disable those pesky emission trouble codes which you are bound to get - then consider the decat or a complete exhaust system.

just my penny...

True story Twinz. :thumbs: I did software first then branch, exhaust and remap afterwards once the branch and exhaust were done. cat foolers sorted the emissions issue..

 

[bullet24]

I got a price from BMW for a Performance 'zorts' = R7993-14 prolly not to bad.

I am playing around with ideas of what to do on my 130, but I am at this moment in time leaning more towards getting better suspension and brakes going before adding more oomph.

And any clues ideas will help.

Thanks!

 

[Twinz]

True story Twinz. :thumbs: I did software first then branch, exhaust and remap afterwards once the branch and exhaust were done. cat foolers sorted the emissions issue..

Thanks Reese...i appreciate your feedback. Thought I was the only one on this matter. :thumbs:

 

[Reese130]

True story Twinz. :thumbs: I did software first then branch, exhaust and remap afterwards once the branch and exhaust were done. cat foolers sorted the emissions issue..

Thanks Reese...i appreciate your feedback. Thought I was the only one on this matter. :thumbs:

No sweat Twinz I definitely agree with what you saying!

@bullet24 I wouldnt bother with suspension and brake upgrades unless you plan on turbo charging, brakes and suspension on the std130i mpack are more than good enough to cope with any power increases from branch, exhaust, software, other minor mods :thumbs:

 

[Philip Foglar]

Hi

I am have the same question RE decat on the 130i, mine is a 2006.

Oo, and Hallo all, my first post here on BMWFan.

Regards
Paul

Hello uncle Paul!! Welcome to Fanatics! How long have you had your 130i M?!

 

[bullet24]

@ Reese130: Thanks I get what you are saying, still need to take the car on a track day to get a feel for it there. I am overall still very much happy with the car as a fun/play around car.

Mr Foglar... hallloooo daar. , thanks thanks, few months now obviously we are not seeing each other enough lately. Don't have any nice photos of her yet you volunteering to put your skills to work??? :rollsmile:

 

[Mike1]

I agree with Charles advice. :thumbs:

You know who to call in Cape Town for software. :thumbs:

 

[moranor@axis]

agree 100% with twins... the newer cars are bringing newer problems that the exhaust guys cant deal with...

rather speak to a good tuner and get advise on your car before you do anything...

 

[Jakkals_F30]

agree 100% with twins... the newer cars are bringing newer problems that the exhaust guys cant deal with...

rather speak to a good tuner and get advise on your car before you do anything...

sorry to thread jack here...

do you guys think i should do the same first on my 323i..
software then decat etc ?
will i run into problems with doing just a decat and cat foolers if needed etc ?

 

[abmi0000]

I have to admit that I am very surprised regarding the concerns.

I have removed my cats without software as yet and I certainly didn't lose any performance. The car without a doubt performed better and the consumption stayed the same if not marginally better.

Software will be coming soon though as I have now done the rest of the exhaust system.

 

[Jakkals_F30]

really wish i knew which way...

I'm too stupid when it comes to these things.

 

[abmi0000]

really wish i knew which way...

I'm too stupid when it comes to these things.

Has nothing to do with stupidity boet. There's just a lot of opposing comments around this subject which creates confusion.

 

[Jakkals_F30]

So i take it for my car i should just leave it.

 

[Bayn46]

So i take it for my car i should just leave it.

You should do everything at once, assuming that money allows it.

If you're going for a decat or a complete system, you will need to take into consideration exactly what was stated above. Cat foolers to keep the car happy. Once you have that in place, you can have the software installed and optimize the car and manage the changes.

Doing software first would more than likely mean that you would have to have it reconfigured again later to cater for the exhaust system changes.

 

[Jakkals_F30]

decat with the foolers would go in at the same time to keep the car happy but if it means there might be issues doing just that for now then i would rather leave it.

 

[Bayn46]

decat with the foolers would go in at the same time to keep the car happy but if it means there might be issues doing just that for now then i would rather leave it.

I'd set some money aside until I could afford to do both the decat and the software.