Hey all,

Deliema, installed a new cargraphic x-pipe and 200cel catalitic converters and my exhaust now 'seems' quieter?

​​​​​​I've also got cargraphic mufflers and it really does seem to have toned down the exhaust and it seems like it's less raw with less volume too?

Could the old cats have been worn out so they may have acted almost like bypass pipes? Car is a 2004 RoW so only pre-cat sensors no post cat to measure if the cats were working.

Thoughts?

 

 

Thanks, definitely agree the sound is a great tone but it's just not as loud.

I've got cargraphic mufflers as well, not too sure what version but I don't think they are super sound. They have CARP96ET on them. Website says they are for a tiptronic. I got in touch with cargraphic they said they are fine to use on a manual.
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​​​​​​I'm looking into the super sound version but I don't want to spend more and not get what I want - which is more volume. What version mufflers do you have?

Did you find any difference in power?

 

Silk ever since you mentioned how good it sounds I've started appreciating the sound its making rather than the volume, its brilliant. Has taken me a little to get used to.

 

I'm now thinking about a 200cel crossover rather than a x-pipe to get back some bottom end, anyone have any experience? Think I have to get some back pressure... back?

 

Hi Dan,

I found that the cargraphic mufflers are really one of the few that really accentuate the pure boxer sound rather then boasting other frequencies to create a louder volume. Just listen to the pops it makes. I think it sounds wonderful.

Also take into account that the x-pipe design will shift the sound spectrum a bit to the higher frequencies which could make it sound less loud. Certainly in the higher rpm ranges.

I cannot directly compare with your setup as I was using the TopGear 200-cell bigger bore x-pipe. I found it too loud inside the car having a lot of resonance and drone under WOT throttle between 1800-2500 rpm. When installing the Cargraphic mufflers it quietened down a bit but not enough. Therefore I switched to 200-cell cross-over cats from TopGear and for me the sound is perfect. Gone cabin drone under WOT.

The fact that you have a tiptronic version of the mufflers makes no difference. The mufflers for tipronic cars only differ in the ribbon/flexible tube which connects to the cats. It prevents the resonances from the tiptronic gearbox when running stationary to go through the whole exhaust setup and can affect the mounting points due to fatigue stress.

Further I am of the opinion that in case you bought the x-pipe and mufflers from a authorized Cargraphic representative, it meas you have spend considerable amount of money. I would not hesitate to contact them with your questions, wishes and doubts. Especially to find out what type of mufflers that you got. And in case you are not happy, you should get in touch with them in order to see if they can let you try another muffler setup. Considering Cargraphic and their after-sales policy I think that is a very reasonable request. After all you paid a lot of money.

 

Here is a video of 996 with Cargraphic TUV Sound mufflers.

 

Thanks for the info silk! Definitely agree with all your points.

The cargraphic website actually states that the xpipe provides slightly more power than the crossover pipes, not by much though.

What did you find the power like going from stock to xpipe back to aftermarket crossover?

I already had the mufflers so talking to cargraphic at the moment about getting the supersound version

 

Not sure what exactly the x-pipe did. changes are small and subtle. I think it shifts the optimal powerband a bit more to right (rpm scale)
At the same time I also installed the IPD competition plenum with the larger throttle body. So That improves the low end a bit.
I like the way it went throuogh the rev range. going WOT till 7000rpm was fantastic. Well it is already fanstastic stock!!!
Right now I am stock again on the intake side. But I am planning to install the copetition plenum soon again.

 

Thanks, I also thought the change was subtle and also moved the power band upwards.

I have the standard IPD plenum not sure if I want to get into the GT3 Tb + plenum.

Thinking maybe crossover + 200cel cargraphic might suit me better being a crossover and creating a bit more back pressure and therefore get back some low end

 

 

There is a 100cel but I think it would shift the curve again into the higher rpm band as they would act more like a catless pipe whereas the 200cel crates some back pressure.

Mainly interested in the crossover vs xpipe

Agree on a tune just need to get the right mufflers and complete the setup with cargraphic headers too.

There was a thread today from someone who lost all their torque before 4k rpm with a catless xpipe.

I'm also kinda not cool on that amount of rubbish polluting the air (without cats).

 

 

Hard to justify the extra cost to regain what I paid to loose!!

Ah yes of course here it is:




Btw please note for anyone installing one of these the O2 sensors should face the car not like they are in the pic above! That's what cargraphic told me at least, I'm yet to spin them around. Don't worry the flow is in the right direction!

 

That's the first thing that came to mind when I saw the picture...Good luck, it's a slippery slope sometimes!