Hello Folks,

I would greatly appreciate your help regarding exhaust modification in order to unleash the V8 growl our cars deserve.

I have been many forum threads and youtube videos, but I would appreciate any extra advice, suggestions and real life experience.

So far, I have a Mina exhaust with the oval tips (which is beautiful) but to my taste it's still quiet.

What would we be please the next level of modification I could do to acquire the exquisite deep V8 noise...

May I add that I do not want to do anything complicated to the point where it would be a hassle to get it back to stock. In Switzerland, we need to have our cars checked by the governement and they do not allow any exhaust mods. The advantage of the Mina Exhaust is that I can have it on and off in about 30 minutes....

Any suggestions for the next level ?

Cheers

 

Look for posts/threads by greverrr, I like the sound of his, but everyone has their own ear. Check this thread, he attached video...https://www.jaguarforums.com/forum/x...uld-do-149357/
Magnaflow, Home ...has simple replacement sizes with proper offsets also, again, depending on your ear... https://www.youtube.com/playlist?lis...593951A394A13C ...perhaps you like the Flowmasters?...https://www.youtube.com/user/Flowmaster The Flowmaster video is the best to determine your want because they use one vehicle for all the tests.

 

Thanxs for your feedback. Do you know if all these mods need soldering ? or are they "plug and play" ?

 

You can buy or have someone make pre bent pipes that go in place of the sections of exhaust, those just slide in and clamp on then, if everything is done right and they're not rusty. Removing rear mufflers gets you a bit more growl but still almost the same noise level as stock, removing mid mufflers and rear mufflers gets you a growl you can feel in your chest at idle. Someone mentioned removing mid mufflers and keeping rear mufflers, that's probably what I'll want to do at some point in the future.

 

The Magnaflow is the plug and play king, unbolt and bolt in. But combined with what nilanium says, you'll get more umph out of its throat.

 

Ok sounds good... I hope I find someone or a member who know's where I can go or order these kind of custom setups ready made
Thanxs

 

Hello,

I went to my local muffler shop.
I asked him to put the car up on the lift.

I told him to remove the center and mid mufflers and replace them with straight pipes to the stock mufflers in the rear.

THIS is the growl your looking for.
Cost me 200 dollars and he custom bent the pipes to the stock pattern.

Sounds VERY cool.

People look and think it's a nice family car until I start it up.

It turns heads now just from how cool it sounds now.

 

Up some audio/video if possible, thanks.

 

If you simply go to Magnaflow and check out their mufflers, you can do it yourself using your existing pipes. I've already checked on them when I was going to go that route. Since then, I've decided I'm going to go with cutouts like Vector.

 

Here's a video of forum member Daim's car with his modified exhaust system. He's removed the centre box and two mufflers before the rear axle, leaving just the rear boxes in place.


Be aware though you'll never get the Jag to sound like a US Muscle car with that characteristic wet gurgle sound like a 65 Pontiac GTO due to it's design, but you can certainly get the deep beat of a European V8

 

As a friend said last night, who had never been in a Jag and always wanted to know how my car sounded in person, he said it sounds (when floored) like the car is screaming at you...

My setup is basically simple yet effective. It also isn't too loud when it comes to daily driving. The police here don't think it is worth stopping. I mean, it is quieter than factory Maserati with the cutout exhaust system. You can drive to town quietly and you can speak in the car just like normal. It isn't extremely loud - unless you really are hard on the "happy pedal".

Here a comparisson of the exhaust build:



A decat is NOT required...! So any state/country emissions will be fullfilled...

 

I discussed the matter last week with a guy who has done exhausts for 30 years.
He suggested me that adding a H pipe in a double system (like our X308 has) results more in the rumble of the American style, where adding a X pipe will go a bit more to the screamer side.
Any ideas on this (I have no experience whatsoever in exhausts), just adding this as a heads up for the OP.

 

Hi,

thanxs for the illustration...I know exactly what I am looking for now.

By the way, if you only do the H pipe muffler into an X pipe or if you only do the straight pipes instead of the silencers before axle are we still getting good sound ?

Cheers

 

@ Eric

The car already has an H-pipe inside the muffler behind the cats. An X-pipe is better for exhaust flow. An H-pipe is more refined and aids removing sound (Rolls Royce had them in their 6.75l V8s) but doesn't help with exhaust flow nor with power gains.

The problem with the Jaguar V8 is it's very smooth firing order. A very regular one so the engine runs extremely smooth all the time. American firing orders are a lot more "vulgar" so the engine sounds - compared to a Jaguar V8 - raw and rumbly. So no matter WHAT you do the the Jaguar V8, you won't ever get the US V8 style. The cross plane crank doesn't help much either.

I want to try something else soon, by separating both exhaust systems. Kind of removing the X pipe and using normal straight pipes to run two separate systems like the V12 has. This should make it run a little less "refined".

 

The H-pipe replacement will only help if the silceners are piped. The silencers alone will increase the tone a good bit but not to the same degree. Some people remove the ones behind the rear axle (under the trunk/boot). That doesn't result in the same "comfort" as that then starts to drone instead...

 

You gotta love that grumble....

 

Nothing like it!
Vector

 

Vector, that's awesome work sir !

 

So by replacing the h-pipe muffler with an x-pipe and removing the forward silencers, that removes a lot of back pressure from the engine. Does that hurt or help with these cars? I know from my American engines I keep some back pressure to maintain a bit longer time for the ignition of fuel in the cylinders.

 

I have noticed an increase in power. I can now get to higher speeds than before (around 10 kph more) and have a shorter 0-100 kph time... I think something around the 7.9-8.2 s instead of 8.5 s.

EDIT: This is on a NON-SC car. An SC car will not benefit from an altered exhaust (powerwise) -> forced induction counteracts it...