Hi All. I'm looking to unleash some extra power, breathability and noise from my 4200 by ding some exhaust mods. I've read a lot of threads on this going back to 2014 and plan to do a primary cat delete and then replace the secondaries with a 200 cell sport cats and add an X or H pipe. One question I have is has anyone kept the original front section with the flattened pipe gutted the primary cats then fitted 200 cell sports cats in place of the factory secondaries and if so what were the results in breathability and noise? Thanks
4200 Exhaust Mods
- Thread starter Carrera
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jasst
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Presuming you have the euro spec headers? my primary cats were removed and replaced by straight through pipe, squished pipes retained and secondary cats removed and replaced by 200 cell sports cats. That alone will not make a huge difference to noise, as to breathability, maybe a slight difference, but nothing hugely noticeable, you are going to struggle to get much of a difference to these cars no matter what you do. IMHO.
mjheathcote
Centenary Club
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I'd be interested in the replies.
I've just replaced the rear boxes with unvalved larinis, which are empty chambers. The noise increase is massive and enough for me.
I did however purchase a pair of euro front pipes, which I've gutted, the value of the scrap bags of catalyst material paid for the purchase price of the used pipes. This was about 6 years ago. Like you the plan was to replace the secondary cats with sports cats, which I haven't progressed with.
Probably because changing the rear boxes was enough for noise levels.
The 42/GS revs so quickly, I'm sceptical whether changing the squished pipes actually makes a measurable difference. Because the pipe that is squished is of a greater diameter, the actual restriction isn't as much as those selling replacements make out.
One thing for sure, it is easy, in my view, to make it too loud!
I've just replaced the rear boxes with unvalved larinis, which are empty chambers. The noise increase is massive and enough for me.
I did however purchase a pair of euro front pipes, which I've gutted, the value of the scrap bags of catalyst material paid for the purchase price of the used pipes. This was about 6 years ago. Like you the plan was to replace the secondary cats with sports cats, which I haven't progressed with.
Probably because changing the rear boxes was enough for noise levels.
The 42/GS revs so quickly, I'm sceptical whether changing the squished pipes actually makes a measurable difference. Because the pipe that is squished is of a greater diameter, the actual restriction isn't as much as those selling replacements make out.
One thing for sure, it is easy, in my view, to make it too loud!
DLax69
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dB Gain Calculator
Determine dB gain by entering initial and final power levels into the dB gain calculator.
www.omnicalculator.com
GeoffCapes
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On my 4200 I had 200 cell sports cat, X pipe and Quicksilver Back Boxes.
Failed its MOT on being too loud! It was a bit Asbo to be honest.
Failed its MOT on being too loud! It was a bit Asbo to be honest.
Delmonte
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- 878
My own journey (and I'm now at happy noise level):
Get an X pipe first. This alone will make the zorst note a bit raspier. But it's quite subtle. Mine was new and Larini, but you don't have to spend that much. There's usually a used one among SM members.
Then send your back boxes to Jason at Jaren metalworks. He will polish them up, open them and remove a lot of the "wadding" inside. Cost approx. 300-400 quid. This gives you a half way point in noise level, between standard and strsight through ( a la larini boxes). And they will look fantastic.... (stalk my old posts from around 2 years ago for pics).
I can't imagine most people would want more noise than these provide.... but note that mine are Gransport boxes with manual remote valve operation- so I can actually turn the volume down if I want (doesn't happen much though lol). You can do this mod with standard or GS boxes....
Get Jason on:
07555675503
(He also has ebay ads:
Get an X pipe first. This alone will make the zorst note a bit raspier. But it's quite subtle. Mine was new and Larini, but you don't have to spend that much. There's usually a used one among SM members.
Then send your back boxes to Jason at Jaren metalworks. He will polish them up, open them and remove a lot of the "wadding" inside. Cost approx. 300-400 quid. This gives you a half way point in noise level, between standard and strsight through ( a la larini boxes). And they will look fantastic.... (stalk my old posts from around 2 years ago for pics).
I can't imagine most people would want more noise than these provide.... but note that mine are Gransport boxes with manual remote valve operation- so I can actually turn the volume down if I want (doesn't happen much though lol). You can do this mod with standard or GS boxes....
Get Jason on:
07555675503
(He also has ebay ads:
Genuine Maserati 4200 Exhaust Rear Silencers.Refurbished,Modified And Polished. | eBay
Genuine Maserati 4200 rear silencers.These stainless steel silencers have been Refurbished and Modified for a better sound.And brush polished with mirror polished finished tail pipes. £595.00. Regards Searley71.
www.ebay.co.uk
DLax69
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- 4,265
On the Coupe: Tubi exhaust (sounds marvelous already)
Stashed in various places and yet to be installed on the Coupe: FD headers without primaries and a set of FD sport cat pipes (for breathing, not for sound, per se...as I'm really happy with the noise from the Tubis)
The Spyder will get sorted once I hear/feel the results from the balance of the Coupe mods...
Stashed in various places and yet to be installed on the Coupe: FD headers without primaries and a set of FD sport cat pipes (for breathing, not for sound, per se...as I'm really happy with the noise from the Tubis)
The Spyder will get sorted once I hear/feel the results from the balance of the Coupe mods...
philw696
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Loved the Tubis on my last one.
midlifecrisis
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- 16,185
There's a bit more noise. More bass. The engine will breathe better. There's YouTube videos on here of comparison. I think posted by Spartacus or Contigo.
