?'s about Cat Delete

[V10SpeedLuvr]

?\'s about Cat Delete

I've got a 96' RT/10 and ready to do a cat delete. Here's my questions:

1. Will I need SIMMs or anything to keep the check engine light from coming on?

2. Will I be running super rich and how much will my gas mileage be affected?

3. How much RWHP will I gain and how much louder will the car be?

TIA guys!

 

[plumcrazy]

Re: ?\'s about Cat Delete

waaaay louder and i know ya need the simms...

not sure on RWHP gain. but it has to be something

 

[carguy07]

Re: ?\'s about Cat Delete

You should NOT need simms.

Not sure.

Probably 20 RWHP. It will be louder.

 

[BLWNV10]

Re: ?\'s about Cat Delete

1Tony1,
recommended the Moroso Spiral Flow Racing Muffler to me. I am goning to try it and think it is a good idea. It does not have packing and is somewhat straight through with little back pressure. I am going to use them in place of hi flow cats. Here is the link to Moroso. http://www.moroso.com/catalog/categorydisplay.asp?CatCode=35001

Alan
BLWNV10

 

[JUCD VPR]

Re: ?\'s about Cat Delete

I just did the cat delete on my 99 RT/10 and i NEEDED o2 simms
alot louder
maybe 10 hp IMO

 

[Joseph Dell]

Re: ?\'s about Cat Delete

99 needs 02 sims... 97 and before didn't, methinks.

no cats is a bit louder, but depends on the cat-back setup you have. not sure about stock. w/ borla it is loud but sounds great (i think you've heard my car... don't recall). with corsas it is REALLY loud.

just my .02...

JD

 

[HIBOOST]

Re: ?\'s about Cat Delete

I needed simms on my 2002.I Picked up power. Little louder!

 

[GTS1998]

Re: ?\'s about Cat Delete

I have a 1998 GTS, Will I need the Sims if I remove the Cats? I have heard conflicting reports. Thanks

 

[KWIK96]

Re: ?\'s about Cat Delete

V10speedluvr,
I have the exact same car as you and have just done all this.
1) The check engine light does not come on with a cat delete.
2) You will be running lean and backfiring on deceleration.
3) HP gain I never did measure, but it felt like there was gain.
The noise is what got me in the end, far too loud, and so after 2 weeks got some Random Tech 3” steel high flows from Jon B (he’s the man) and had them welded in today.
Now it still feels like a HP gain, sounds great, and the backfiring is now a nice burble.

From my experience this is the way to go.

 

[zen garage]

Re: ?\'s about Cat Delete

gts1998, you should not need simms. I just finished this on my 98 gts and have no issues without them.

 

[GTS1998]

Re: ?\'s about Cat Delete

Thanks!

 

[Ulysses]

Re: ?\'s about Cat Delete

Some 98's did have an issue. Luck of the draw.

 

[GTS1998]

Re: ?\'s about Cat Delete

Thanks. Maybe I'll pick up a set of sims just in case