Third cat delete question

[southtxSHO]

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

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[kbeck59]

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

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You can delete for a little more power , but I'd go with some sort of mid x resonator or it will probably end up raspy if you replace with just straight piping.
Shoman04 has done this , I think using a magnaflow resonator that replaces the third cat / oem resonator .

 

[BiGMaC]

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

Delete the cat if desired.... leave the resonator which is behind it.... folks who have done this like it.  Folks that deleted the resonator don't. no need to add any more per those that have done it.

 

[southtxSHO]

Great info guys , it's much appreciated . Think I will leave as and might delete cat later .

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[FastSHO23]

I did the delete today. Kind of glad I did. Really like the sound

 

[68_GT]

I want to delete my third cat but I'm afraid of a stinky smell, and I really want non catted dp's eventually which would be too loud probably w/o the third cat - but I'm too cheap to buy them right now.

 

[kbeck59]

I want to delete my third cat but I'm afraid of a stinky smell, and I really want non catted dp's eventually which would be too loud probably w/o the third cat - but I'm too cheap to buy them right now.

If you do go with non catted down pipes later and have no 3rd cat as well , you will definitely smell more out the exhaust and even more so if you try E85 blending .
DJE had noticed this as well with with his non catted downpipes and ended up putting the 3rd cat back on .

It didn't really bother me , I considered it the smell of Power .
Ethanol has a distinct smell to it .

 

[ShoBoat]

I want to delete my third cat but I'm afraid of a stinky smell, and I really want non catted dp's eventually which would be too loud probably w/o the third cat - but I'm too cheap to buy them right now.

If you do go with non catted down pipes later and have no 3rd cat as well , you will definitely smell more out the exhaust and even more so if you try E85 blending .
DJE had noticed this as well with with his non catted downpipes and ended up putting the 3rd cat back on .

It didn't really bother me , I considered it the smell of Power .
Ethanol has a distinct smell to it .

You know it's making lots of powa when it brings tears to your eyes. I remember this from my old school rides


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[shoman04]

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

Sent from my SM-N900T using Tapatalk

You can delete for a little more power , but I'd go with some sort of mid x resonator or it will probably end up raspy if you replace with just straight piping.
Shoman04 has done this , I think using a magnaflow resonator that replaces the third cat / oem resonator .

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

Sent from my SM-N900T using Tapatalk

southtx  I have a local build 2.5",x-pipes,LMS Catted-DP,WITH changeable mufflers stock/DynoMax. I love it!!! I MADE 405AWHP/417TQ w/METH (bpd before big turbos 402AWHP/420tq) So for a lot less money I'm making the same power. My changeable mufflers cost only $50 extra and I can go from stock quit to HotRod loud in less than 30mims. It makes road trips with wife real nice!!!

 

[FastSHO23]

I want to delete my third cat but I'm afraid of a stinky smell, and I really want non catted dp's eventually which would be too loud probably w/o the third cat - but I'm too cheap to buy them right now.

I haven't smelled anything. I know the smell your referring to. It has not been smelt since doing this on my car.

 

[southtxSHO]

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

Sent from my SM-N900T using Tapatalk

You can delete for a little more power , but I'd go with some sort of mid x resonator or it will probably end up raspy if you replace with just straight piping.
Shoman04 has done this , I think using a magnaflow resonator that replaces the third cat / oem resonator .

Ok guys so I'm here at the muffler shop putting the catted dps. What are the benefits of the third cat delete ? Performance gain ? Sound ? I'm currently running stock exhaust .

Sent from my SM-N900T using Tapatalk

southtx  I have a local build 2.5",x-pipes,LMS Catted-DP,WITH changeable mufflers stock/DynoMax. I love it!!! I MADE 405AWHP/417TQ w/METH (bpd before big turbos 402AWHP/420tq) So for a lot less money I'm making the same power. My changeable mufflers cost only $50 extra and I can go from stock quit to HotRod loud in less than 30mims. It makes road trips with wife real nice!!!

That's a great idea ! I'm sure the muffler shop can fab something up like this.

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[Excalibur]

How are people eliminating the cels associated with this mod? Can you tune it to not be on or can you only use defoulers?

 

[ajpturbo]

Deflulers do nothing on these cars....all in the tune...you can turn off the rear o2's but that wont help you ready the i/m monitors if you require them

 

[gdonley308]

Old thread I know. Going to delete third cat leave oem resonator. Has anyone dyno'd before and after third cat delete? Can you hear the turbos sfter this mod? Thanks

 

[ZSHO]

Old thread I know. Going to delete third cat leave oem resonator. Has anyone dyno'd before and after third cat delete? Can you hear the turbos sfter this mod? Thanks

The true bottle neck are the DP's,dont expect any sufficient gains.  Z

 

[BiGMaC]

Old thread I know. Going to delete third cat leave oem resonator. Has anyone dyno'd before and after third cat delete? Can you hear the turbos sfter this mod? Thanks

The true bottle neck are the DP's,dont expect any sufficient gains.  Z

Agree... At least on the dyno as seen in others cars. Many have put it back because the engine started sounding ricey.