Exhaust note adjustment

[talkingcars]

Thank you!

I'll have a good look underneath - if theres no cat, what is the gap filled with? Or is it just easy to omit.

There maybe a sports cat or more likely a straight pipe with the flanges at the end.

[Ant132]

Ah ok - that would make sense. So guessing that even i swapped the silencer, if the cat was missing id need a cat aswell or problem would persist

[jaydoginvasion]

To a degree yes.
A cat may make it more bearable if one isn't installed.

[Ant132]

It has a cat - so im guessing its just obnoxiously loud.

One thing i did notice is that is appears to have a cone-type air filter on it, like K&N style. Surely this will contribute to the noise, anything that can be done with the air filter?

[jaydoginvasion]

Could put in a closed induction filter such as a Vadar a standard air box or one from a TF.
I have a standard one you can have if you like but a closed induction or a Tf one are better

[jaydoginvasion]

Whereabouts are you by the way?

[Plezier]

It has a cat - so im guessing its just obnoxiously loud.

One thing i did notice is that is appears to have a cone-type air filter on it, like K&N style. Surely this will contribute to the noise, anything that can be done with the air filter?

My VVC "Elsie" has a K&N 57i fitted, was on it when she arrived here, and that is the open cone one. There is "supposed" to be induction roar from such a filter however I am still looking for this fabled induction roar. One can hear it very slightly when it's cold and I believe I heard it once when booting the throttle wide opne besides a high stone wall but that was it in some 4,000 miles of driving her.

So I doubt you will notice any difference in noise if you fit the standard air box back.

[Rob Bell]

Looking at the pictures, this is an X-Power aftermarket exhaust (for the TF), and yes, there is a catalyst fitted as you can see it in some of the pictures.

You should be able to re-sell this system, as it is an official MG part, and there is a market for systems like this. One persons' "too loud" is someone else's "sports car exhaust note"!

[Ant132]

Thanks everyone.

I made a further discovery today, I by chance happened to notice there was no pressure coming out of the silencers, nothing at all. So I though maybe there's a massive hole I'm missing or something.

So I jacked the car up and found out that there is a pipe that seems to connect the cost to the manifold, that has come away and there is no seal at all.



It's sort of like a coil/spring section is the best way I can describe it. Anyone familiar?

Best way to repair? New section, weld, etc?

Ant

[Geoff.F]

Presumably you refer to the flexible pipe between the manifold and the cat. You will need to remove it to examine it and then decide the location and extent of damage before considering repair. They have been repaired with replacement flexible section or flange however the economics may well require a replacement.
There are so many cars in Scrappies and bought to strip for spares that finding one should not be difficult.
Geoff F.

[talkingcars]

..........It's sort of like a coil/spring section is the best way I can describe it. Anyone familiar?

Best way to repair? New section, weld, etc?

Ant

It is part of the down pipe. Personally I would replace the whole downpipe, possibly with a stainless steel one from ebay but you maybe able to get a repair made by someone such as powerflow of longlife.

If sourcing a replacement early cars have a four bolt flange at the top, later cars have 6.

[talkingcars]

Looking at the pictures, this is an X-Power aftermarket exhaust (for the TF), and yes, there is a catalyst fitted as you can see it in some of the pictures.

The pictures with the cat in are Jaydoginvasions pictures, the last 2 on the previous page are Ants and you can only see the tail pipe.

[adrianclifford]

Did you buy from a dealer or private ?, this is a fault, not a loud exhaust, take it back and get them to repair or replace it if you can.

[Ant132]

I bought it privately, very cheaply so if thats the only thing wrong then i've been very lucky i think.

Rather naively i missed the leak and believed the sellers excuse of a 'loud aftermarket system'

So ive order a flexipipe and i will attempt to fit it myself. Are the any guides on this, i am hopeing its fairly simple as long as the bolts come off easy enough!

Thanks chaps.

[Rob Bell]

The flexipipe is part of the down pipe. This is bolted to the exhaust manifold flange.

Note that there are two versions of this: a four-stud and a six-stud - the latter for later MEMS3 cars (post catalyst lambda sensor).

James, thanks - I hadn't realised that all the pictures weren't of Ant's car; Ant, best confirm (1) you have a catalyst fitted and (2) that it is still intact! Hopefully the matrix is still in one piece.

[Ant132]

The flexipipe is part of the down pipe. This is bolted to the exhaust manifold flange.

Note that there are two versions of this: a four-stud and a six-stud - the latter for later MEMS3 cars (post catalyst lambda sensor).

James, thanks - I hadn't realised that all the pictures weren't of Ant's car; Ant, best confirm (1) you have a catalyst fitted and (2) that it is still intact! Hopefully the matrix is still in one piece.

Mine is an early 2000 so has the four studs - thanks for pointing this out though. Im sure i could have easily ordered the wrong one.

1) yes it does have a catalyst fitted and seems in good order! 2) from what i can see, yes. But its not even in use at the moment due to the clear break at the flexi pipe.

[Rob Bell]

Great stuff

Flexipipe replacement is one of those jobs that ought to be straightforward, but more often than not complicated by corrosion, stuck nuts and the ever prevailing fear of sheared flange studs! If you have access to oxyacetyline, heating everything up to cherry red is probably the best route to a simple job

[adrianclifford]

Great stuff

Flexipipe replacement is one of those jobs that ought to be straightforward, but more often than not complicated by corrosion, stuck nuts and the ever prevailing fear of sheared flange studs! If you have access to oxyacetyline, heating everything up to cherry red is probably the best route to a simple job

So take it to an exhaust place near you Seriously, they are hard to remove, the studs will probably snap but if you're inclined to do it your self get new nuts/bolts ready for the replacement. You can buy cat saver nuts that are closed ended and are easier to remove later.

[talkingcars]

Have you ordered the complete downpipe or just a flexi section?