Cats deleted

[ViperPict]

I got the car back today after having the cats removed. What a difference! I can only assume that the damaged cat was hindering exhaust flow as the car seems far more responsive now. Also, absolutely no fuel smell in the cabin now, temp gauge noticeable lower and in-car temp lower. A more gutteral sound from the exhaust and a bit louder but not had it on full chat yet! Also, no popping (or much less) on changing down through gears. All-in-all, only positive changes and wish I'd done it ages ago!

[fatboy18]

I love mine popping when backing off throttle

So whats the rest of your exhaust system, is it all OEM?

Edited by fatboy18 on Friday 24th September 21:06

[Fartgalen]

And rather importantly, what are the exhaust readings like ? I'm not an evironmentalist - just thinking of your next MOT.

[neilsfishing]

Fartgalen said:

And rather importantly, what are the exhaust readings like ? I'm not an evironmentalist - just thinking of your next MOT.

MOT no prob track day there is the prob

[fatboy18]

Exhaust readings...........................What are they

[Dr-Bob]

Think he maybe on about emissions .......not Db level

[fatboy18]

What are those

[ViperPict]

Car was manufactured in 1995 so the emissions criteria are quite liberal. And got some baffles for the exhaust for dB!

[amirzed]

Fartgalen said:

And rather importantly, what are the exhaust readings like ? I'm not an evironmentalist - just thinking of your next MOT.

mr galen, you got a silver Mustang?

[fatboy18]

Any pics of the cat delete?

[ViperPict]

fatboy18 said:

Any pics of the cat delete?

I got a local mechanic to do it. By the time I saw the car the side sills were back on again I'm afraid. But it's just straight through 3" pipe apparently.

[fatboy18]

Just wondering exactly where the cuts were and what type of pipe and clamps? Stainless, 3"?

[ViperPict]

As far as I can tell, no cuts were required as AM cats fitted over exhaust tubing. Yes, 3" stainless pipe.

[GTSDave]

fatboy18 said:

Just wondering exactly where the cuts were and what type of pipe and clamps? Stainless, 3"?

It'll depend on what you have in the car at the moment Mark, if you still have stock cats I would suggest cutting as close to them as possible in order to give yourself plenty of room for adjustment at a later date should you chose to add in some aftermarket cats at some point (they seem to vary in length so the less you've previously cut out the better)... The stock exhaust is less than 3" but an exhaust fabricator will be able to knock up the right size pipe and stretch it for slot fitment etc, and should also be able to step it up/down to fit between sections of pipe which change in diameter.

[fatboy18]

Yep, exactly what I was thinking
Here's what Ive got at the moment, Stock Headers (2000), Stock cats (2 1/2 tube in and out of cat) then 3" Cat back Bellanger system
Current noise 119db



So If I get rid of the cats its going to be a little bit louder
Also you will notice the second silencer is removed with the Bellanger system

[Dr-Bob]

easy job ...

[GTSDave]

Dr-Bob said:

easy job ...

[ViperPict]

fatboy18 said:

Yep, exactly what I was thinking
Here's what Ive got at the moment, Stock Headers (2000), Stock cats (2 1/2 tube in and out of cat) then 3" Cat back Bellanger system
Current noise 119db
So If I get rid of the cats its going to be a little bit louder
Also you will notice the second silencer is removed with the Bellanger system

With high flow cats, mine was 131dB on a dyno run last year!