Gutted header cat

[Foulsmell 120]

Hi All.

Was looking at this thread...

http://www.ft86club.com/forums/showthread.php?t=96235

.. where they have just gutted the cats and tuned the car basically.

The results look around 80% of a replacement header but at a fraction of the cost. Also almost deleting the torque dip.

Has anyone done this over here? What are your thoughts?

Cheers.

[Kodename47 446]

My OEM mani has no cat..... not gutted though. Also SC, so can't really comment.

Try it, why not?.... it's free. A replacement mani is cheap if you don't like it.

[Tareim 343]

38 minutes ago, knightryder said:

My OEM mani has no cat..... not gutted though. Also SC, so can't really comment.

Try it, why not?.... it's free. A replacement mani is cheap if you don't like it.

so you chopped the section out and replaced it with another bit of pipe?

[surrey86 352]

Well, a downside obviously is you're going to need to buy another oem pipe to pass an MOT, so it's not really free.

[long-gone 152]

Probably not. Secondary cat should see you through.

ETA - Just noticed in link they're removed that too, so you're probably right.

[Ade 517]

10 hours ago, Tareim said:

so you chopped the section out and replaced it with another bit of pipe?

Mark at Abbey motorsport did it for him few years ago. I'm tempted as it doesn't appear to add too much noise. 

[Foulsmell 120]

I've got the secondary cat off the car but can replace come MOT time.

All I'd have to do is get the map adjusted I suppose.

[Foulsmell 120]

10 hours ago, Tareim said: so you chopped the section out and replaced it with another bit of pipe?

Mark at Abbey motorsport did it for him few years ago. I'm tempted as it doesn't appear to add too much noise. 

Cheers. I don't think the noise would be too much difference.

I've got a resonated Milltek anyway so won't be too loud.

[Keethos 842]

Mark at Abbey was doing a swap scheme at one point, where to save time and a bit of money you could give him your manifold and he would give you one that he had already modified.  Not sure if he's still doing it or not.

[Foulsmell 120]

Found the thread but no update on it for nearly 2yrs. I've PMd him to have a look at this and share his thoughts.

[Mark@Abbey M/S 235]

Hi,

 

catching up with emails.

Yes we did a few of these a while ago , It doesn't remove the torque dip we found, it helps make the torque dip a little less obvious.

approx a £400-00 job , quite labour extensive job , to remove all the heat shields , cut the cut out and fabricate the pipe to replace the Cat and weld up and refit all the heat shields

 

 

[Foulsmell 120]

Hi,

 

catching up with emails.

Yes we did a few of these a while ago , It doesn't remove the torque dip we found, it helps make the torque dip a little less obvious.

approx a £400-00 job , quiet labour extensive job , to remove all the heat shields , cut the cut out and fabricate the pipe to replace the Cat and weld up and refit all the heat shields

 

 

Cheers Mark.

The one on the thread just smashed the cat in and didn't replace with a straight pipe.

Don't suppose you've got any plots?

[Mark@Abbey M/S 235]

Afraid not on a manual NA car , most went on FI cars or a Auto NA I am afraid

[Church 209]

Even if not £400 with replacing with stright pipe, but simply smashing primary cat, i'd leave stock as is.

1) cheapest aftermarket headers are not too expensive, eg. gruppe-s and alikes ..

2) they'll get rid from torque dip too & are lighter then stock

3) you'll have your free stock header for when/if sometime in future MOT inspection rules may get stricter and for when you'll sell your car without need to buy one used from someone parting out. Unmodded/stock cars often are much easier to sell, and sometimes even at premium vs modded ones.