2.5" to 3" exhaust for LS1.

[RicheCV8]

Hi all,

Well I have full exhaust system on the monaro, pacemaker headers, high flow cats and a red back cat back system. I t has a great burble to it once it's heated up with a great bark to it once you stomp your foot to the carpet.

Problem I have is that it just doesn't have any brightness to the exhaust note, I know that the red back system isn't the best on the market so i was thinking of upgrading to a full stainless system but not sure if I should got to the 3" system, in a round about way this will be louder but will it be illegally loud.

Any help would be greatly appreciated.

Below is a vid on a cold start, excuse walk around....was getting the morning paper.


Here is a clip after the car was driven for a while, excuse the iPhone video quality.

 

[rhinos]

Hey mate I would recommend a 3" difillipo or Exforce cat back exhuast. They just have a deeper note to it. And really nice note on the highway with less of a drone than a 2.5". Also really good if you plan on puting in a mild cam later down the track.

 

[RicheCV8]

Hey mate I would recommend a 3" difillipo or Exforce cat back exhuast. They just have a deeper note to it. And really nice note on the highway with less of a drone than a 2.5". Also really good if you plan on puting in a mild cam later down the track.

Cam indeed, well I am heading towards the difillipo but I fear the EPA will no it to much.

 

[WogBoyz]

Also have a look at the kpm systems, they make some seriously good quality exhuast, the same if not better then di fillipo

They are however quite expensive

 

[Kingston_99]

hey mate, im in the same exact same boat. got twin 2 1/2 system, pacey headers and red back mufflers the same LOL.

im upgrading to the stainless twin 3inch system by difilpo, also tossing the paceys and chucking in 4 into 1 stainless ceramic coating headers by difilpo.

i'v allready got a quote for the system and will be ording it tomorrow. i can pm you the price i got quoted by difipo.

 

[wikky]

Also have a look at the kpm systems, they make some seriously good quality exhuast, the same if not better then di fillipo

They are however quite expensive

If you look at a KPM and Di Fillipo system side by side, the KPM sh1ts all over the Di Fillipo in build quality. I've never heard a bad word about KPM, but a fair bit of negative feedback about the other.

 

[LS1FUN]

hey mate, im in the same exact same boat. got twin 2 1/2 system, pacey headers and red back mufflers the same LOL.

im upgrading to the stainless twin 3inch system by difilpo, also tossing the paceys and chucking in 4 into 1 stainless ceramic coating headers by difilpo.

i'v allready got a quote for the system and will be ording it tomorrow. i can pm you the price i got quoted by difipo.

Is that the Big Boy System? A dude who I work with has the Big Boy System on his XR8 and it sounds off its head, like insanely nuts. Love it.

 

[WogBoyz]

If you look at a KPM and Di Fillipo system side by side, the KPM sh1ts all over the Di Fillipo in build quality. I've never heard a bad word about KPM, but a fair bit of negative feedback about the other.

Yeah ive heard that Kpm is pretty much the best you can get, cant wait to get my system when i get the ve! thanks for clearning up the quality thing too

 

[RicheCV8]

If you look at a KPM and Di Fillipo system side by side, the KPM sh1ts all over the Di Fillipo in build quality. I've never heard a bad word about KPM, but a fair bit of negative feedback about the other.

I have some amazing things about KPM and they are now stocked through Chevs. My question is how ilegal will this be as in volume.

 

[wikky]

I have some amazing things about KPM and they are now stocked through Chevs. My question is how ilegal will this be as in volume.

Depends on a few things eg. size of the system you get, if you have a cam etc. I doubt many (if any) aftermarket exhausts systems will get you under the legal dB limit.

Another option is a Sureflo system. I have a single 3.5" with the 'quiet' muffler and 4.5" body cats. This outflows my old twin 2.5" Xforce and 3" cats big time. Sureflo is excellent build quality and Greg is a top bloke to deal with.