Been playing with my exhaust
Discussion
Hi everyone,
Up until yesterday my Monaro VXR 6.0 had a Milltek exhaust which was 2 completely seperate pipes running from each cat with 1 rear silencer on each, nothing in the centre. See below:
This has always made the car fairly loud and have a very burbly muscle car sound, which has been great. However I fancied a change and did not want to spend a fortune so yesterday I had an X pipe welded in which I have no pictures because the garage put the car on the floor before I could have a look.
This has had some interesting results.
The power delivery is very different now! I guess it feels like the car has a little less low down torque now but is a lot quicker to rev, and there is definitely more grunt towards the top of the rev range then before.
The noise has changed somewhat, I supose it is now les burbly and more raspy, reminds me of a V8 M3 and a bit like my dads SL55, less old school I suppose. Still sounds great just different.
The only downside is it actually seems to have made the car a little quieter, which was not my plan. It's a different noise but slightly less of it, I want more! I am thinking about going mad and just deleting the 2 rear boxes and going straight through, have some fun with it for a while.
Has anyone else had a similar set up? I am just curious as to how loud it will be, and if it will sound good or just be lots of horrible noise. Will it affect the performance atall?
I had cutouts fitted a while ago these were rediculously loud but the noise was not pleasant, so I got rid of them.
I guess this is because the cutout is essentially a big hole halfway though the exhaust, this also made my car very slow so I just had the orignal bit of pipe welded back in. This is where the x pipe now sits.
In an ideal world I would rip it all out and start again, but I cannot justify £2-3k on it at the moment when I already have high flow cats and a decent system to start with.
Anyway any comments on the changes I have noticed and if straight pipes with an X has been done before and how it will further change things will be great.
Thanks
Karl
Up until yesterday my Monaro VXR 6.0 had a Milltek exhaust which was 2 completely seperate pipes running from each cat with 1 rear silencer on each, nothing in the centre. See below:
This has always made the car fairly loud and have a very burbly muscle car sound, which has been great. However I fancied a change and did not want to spend a fortune so yesterday I had an X pipe welded in which I have no pictures because the garage put the car on the floor before I could have a look.
This has had some interesting results.
The power delivery is very different now! I guess it feels like the car has a little less low down torque now but is a lot quicker to rev, and there is definitely more grunt towards the top of the rev range then before.
The noise has changed somewhat, I supose it is now les burbly and more raspy, reminds me of a V8 M3 and a bit like my dads SL55, less old school I suppose. Still sounds great just different.
The only downside is it actually seems to have made the car a little quieter, which was not my plan. It's a different noise but slightly less of it, I want more! I am thinking about going mad and just deleting the 2 rear boxes and going straight through, have some fun with it for a while.
Has anyone else had a similar set up? I am just curious as to how loud it will be, and if it will sound good or just be lots of horrible noise. Will it affect the performance atall?
I had cutouts fitted a while ago these were rediculously loud but the noise was not pleasant, so I got rid of them.
I guess this is because the cutout is essentially a big hole halfway though the exhaust, this also made my car very slow so I just had the orignal bit of pipe welded back in. This is where the x pipe now sits.
In an ideal world I would rip it all out and start again, but I cannot justify £2-3k on it at the moment when I already have high flow cats and a decent system to start with.
Anyway any comments on the changes I have noticed and if straight pipes with an X has been done before and how it will further change things will be great.
Thanks
Karl
The standard Milltek exhaust should have had a H-pipe. I'm guessing this has been removed at some point?
I had a Milltek on my car when I bought it, sound very woofly and bassy. It reminded me of the Walkinshaw systems. I ended up selling that and getting a custom cat-back/sports cats/headers (inc X-pipe) from AAS.
I had a Milltek on my car when I bought it, sound very woofly and bassy. It reminded me of the Walkinshaw systems. I ended up selling that and getting a custom cat-back/sports cats/headers (inc X-pipe) from AAS.
I ran my old Monaro VXR for a while with straight thro pipes, it was proper LOUD, was fun for a while but after any decent runs in it, I use to get out with ringing in my ears like I'd been in a nightclub standing by the speakers all night.
I think if you went this way, you would swap back fairly quickly.
Ask ARAF how loud my car was, scarred the living daylights out of him on a run one day coming off a slip road joing the road he was on!!
As I said, it was fun for a while, but that's it !
I think if you went this way, you would swap back fairly quickly.
Ask ARAF how loud my car was, scarred the living daylights out of him on a run one day coming off a slip road joing the road he was on!!
As I said, it was fun for a while, but that's it !
Tattooboy said:
I ran my old Monaro VXR for a while with straight thro pipes, it was proper LOUD, was fun for a while but after any decent runs in it, I use to get out with ringing in my ears like I'd been in a nightclub standing by the speakers all night.
I think if you went this way, you would swap back fairly quickly.
Ask ARAF how loud my car was, scarred the living daylights out of him on a run one day coming off a slip road joing the road he was on!!
As I said, it was fun for a while, but that's it !
Yeah, especially as we were on a standard exhaust, and not expecting you - let alone rip along the sliproad and out in front of us. I think if you went this way, you would swap back fairly quickly.
Ask ARAF how loud my car was, scarred the living daylights out of him on a run one day coming off a slip road joing the road he was on!!
As I said, it was fun for a while, but that's it !
Addressing the original question, we're just playing with our exhaust at the moment, and will soon have cats and X pipe only before the cutouts.
As your X pipe has changed the tone and volume, how about trying the cut-outs again, as long as they are after the X pipe?
Thank you for all the answers so far. The car is purely for fun and as I do not drive it very far really loud is great, adds to the occasion. However I would like a nice noise, the problem I found with cutouts was it was not a very nice noise, just sounded like an exhaust blowing.
And the main thing that puts me off is that the performance of the car was affected so much, that is what I want to avoid.
I cannot see why straight pipes would effect performance atall but then I thought this about the cutouts!
Would straight pipes be as loud as open cutouts? I would expect not quite but hopefully one of you knows for sure?
And the main thing that puts me off is that the performance of the car was affected so much, that is what I want to avoid.
I cannot see why straight pipes would effect performance atall but then I thought this about the cutouts!
Would straight pipes be as loud as open cutouts? I would expect not quite but hopefully one of you knows for sure?
Without a balance pipe you tend to get a really annoying bark to the exhaust note. In australia they call it Thong clap. Translated it means at certain rpm it sounds like hitting two flip flops together.
It Usually sounds worse outside the car. The old 253 holden v8 was really bad for this without a crossover pipe.
My housemate recently picked up a WK statesman and it had no balance pipe on the aftermarket twin system. It made the same "Clap" noise. So he had a balance pipe fitted. Exhaust sounds much better now. Another benefit is they are supposed to help exhaust scavenging.
It Usually sounds worse outside the car. The old 253 holden v8 was really bad for this without a crossover pipe.
My housemate recently picked up a WK statesman and it had no balance pipe on the aftermarket twin system. It made the same "Clap" noise. So he had a balance pipe fitted. Exhaust sounds much better now. Another benefit is they are supposed to help exhaust scavenging.
Edited by Coatesy351 on Friday 15th August 17:37
My SSV has had the rear silencers removed and straight through pipes put in. It drones badly at 2,000rpm, annoyingly so. However, at the legal limit here of 80-100Kmh on the dual carriage way it ticks over at 1,000 rpm and has a lovely tick over burble. Under hard acceleration it sounds great but under load at low speed does my head in!!
Stef
Stef
StefanVXR8 said:
My SSV has had the rear silencers removed and straight through pipes put in. It drones badly at 2,000rpm, annoyingly so. However, at the legal limit here of 80-100Kmh on the dual carriage way it ticks over at 1,000 rpm and has a lovely tick over burble. Under hard acceleration it sounds great but under load at low speed does my head in!!
Stef
See what we have done above. Whisper quiet on a run, but when the cutouts are fitted.... Stef
ARAF said:
StefanVXR8 said:
My SSV has had the rear silencers removed and straight through pipes put in. It drones badly at 2,000rpm, annoyingly so. However, at the legal limit here of 80-100Kmh on the dual carriage way it ticks over at 1,000 rpm and has a lovely tick over burble. Under hard acceleration it sounds great but under load at low speed does my head in!!
Stef
See what we have done above. Whisper quiet on a run, but when the cutouts are fitted.... Stef
Stef
Well I guess there is only one way to find out, I can always put a different rear box on afterwards if straight pipes are not to my liking.
My cutouts were fitted a foot or so in front of the rear diff as you might be able to see in the picture.
It does not sound like straight pipes have affected anyone elses performance before?
My cutouts were fitted a foot or so in front of the rear diff as you might be able to see in the picture.
It does not sound like straight pipes have affected anyone elses performance before?
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