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 :P 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 :P 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.

[Kingston_99]

first time i'v heard of KPM, do they have a website.

[wikky]

first time i'v heard of KPM, do they have a website.

You need to get out more......lol KPM Motorsport | Ford + Holden Performance products

[Kingston_99]

You need to get out more......lol KPM Motorsport | Ford + Holden Performance products

haha thanks mate, what sort of sound do they put out? same as diflipo. oh and thats for a twin 3inch as well.

[WogBoyz]

haha thanks mate, what sort of sound do they put out? same as diflipo. oh and thats for a twin 3inch as well.

have a look on youtube man, but from what ive been youtubing and asking people all have said the pefect note, not too loud or soft but has the perfect deep rumble with no drone

[faBReGaS]

Personally i would go a twin 2.5" mate.. i heard you get more out of them and with a stainless steel zorst the note is beautiful! im getting my exhaust done tomorrow on my VY SS, gettin a stainless steel 2.5" Xforce, i got 2 Sureflo Ballistic Racing cats and pacemaker Tri-Y headers. i will let you know how it sounds when i get the car back tomorrow!!

[RicheCV8]

Personally i would go a twin 2.5" mate.. i heard you get more out of them and with a stainless steel zorst the note is beautiful! im getting my exhaust done tomorrow on my VY SS, gettin a stainless steel 2.5" Xforce, i got 2 Sureflo Ballistic Racing cats and pacemaker Tri-Y headers. i will let you know how it sounds when i get the car back tomorrow!!

The system I have now is a twin system but from the sounds of it the KPM system sounds like the better option. Will pop down and see Chev on the weekend and listen to one of the twin 3" stainless systems.

[Vt_vic]

i like the manta exhausts a lot of people prefer them over the difilippo and there a lot cheaper

[WogBoyz]

The system I have now is a twin system but from the sounds of it the KPM system sounds like the better option. Will pop down and see Chev on the weekend and listen to one of the twin 3" stainless systems.

let us know how the kpm system sounds in person man as im getting one of them systems on the VE

[wikky]

let us know how the kpm system sounds in person man as im getting one of them systems on the VE

I guarantee you wouldn't be disappointed with the sound of a KPM system. I've heard a heap on cars ranging from near stock to very heavily modified and they all sound farkin fantastic.

[RicheCV8]

I guarantee you wouldn't be disappointed with the sound of a KPM system. I've heard a heap on cars ranging from near stock to very heavily modified and they all sound farkin fantastic.

Wikky, nothing sounds as good as you blown SS. I will have a chat to Chev and get a price.

[WogBoyz]

I guarantee you wouldn't be disappointed with the sound of a KPM system. I've heard a heap on cars ranging from near stock to very heavily modified and they all sound farkin fantastic.

yeah im getting that feeling too ay lol ive had 100% postive feed back, which is always good

[RicheCV8]

yeah im getting that feeling too ay lol ive had 100% postive feed back, which is always good

Same here, I am going to Chev's this Saturday, will see what a news system will cost.