VE SS EXHAUST. Decisions!!!!!

[Turtle2388]

So if I go a 3" and it drones to much I have the option of swapping out the rear mufflers for him or walkinshaw is that right. Would the 3" be to loud, I need it to be reasonable on the freeway

No not exactly. Your best bet is to listen to a system and see what you think.

Sent from my GT-I9300T using Tapatalk 2

 

[michaelkee2012]

DPM doesnt do X-force. Will only do Diflipio. Give him a call really good to talk to!!

 

[StoneX]

...
1: 2 1/2" cat back exhaust will provide no extra power and a waste of time. My stock car with 2.5" KPM cat-back made 210rwkw, I didn't get measured before but I doubt it gave much extra at all, maybe 5kw
2: 2 1/2" cat back exhaust is my best option as it won't drone with the auto and will provide the best street power, like take off and out of corners but no top end as it won't breath like the 3", but will still have a great note especially when punching it. Both 2.5" and 3" drone... People who say they don't have just learnt to live with it. My KPM guaranteed not to drone still droned going up hills and slightly when sitting around 1,800-1,900RPM
3: 3" cat back will provide the best power and best note. 3" should give a deeper note but in general is also quite a bit louder than 2.5"
4: 3" will provide top end power because it can breath but will not provide low down power and will drone heaps on auto, highly not recommended. Without getting a cam a 2.5" will flow more than enough to not limit the power output
5: VCM OTR is the best option over ramjet. There's a lot of VCM fanboys on here so take their opinion with a grain of salt. VCM, Duspeed, KPM are all well regarded. I ended up with Duspeed as VCM had leaking issues at the time
6: maff tune is good but a waste of money, but is conservative if fuel is an issue. MAF tune is perfectly fine with VE's, apparently the sensor doesn't really restrict flow and it is legal
7: maff less tune is better as there are more power gains, but does use more fuel See above, I don't think it uses more fuel, the tune will determine that

These are just my opinions :beer chug:

 

[PIR4TE]

Ok, I know there is hundreds of posts on this topic, but I am now so confused. Here is the situation.

I have an 09 VE SS auto. What I want is a bit more power on a budget (like everyone). What I would like to do is a cat back exhaust, cold air intake and a tune. I eventually want to get cats and headers but this needs to come later for funds reasons. I want a v8 that sounds like a v8 with a bit more power. I'm not going down the cam or charger path as its a daily family car. But it needs to be reasonable on the freeway. Also AFM is going to be turned off for sure.

Ok this what I have been told so far
1: 2 1/2" cat back exhaust will provide no extra power and a waste of time.
2: 2 1/2" cat back exhaust is my best option as it won't drone with the auto and will provide the best street power, like take off and out of corners but no top end as it won't breath like the 3", but will still have a great note especially when punching it.
3: 3" cat back will provide the best power and best note.
4: 3" will provide top end power because it can breath but will not provide low down power and will drone heaps on auto, highly not recommended.
5: VCM OTR is the best option over ramjet.
6: maff tune is good but a waste of money, but is conservative if fuel is an issue.
7: maff less tune is better as there are more power gains, but does use more fuel.

The exhaust I'm referring to is xforce, before anyone bags it I know there are better options out there but Im only working with what I can afford at this stage.

Sorry for the long post but I would really appreciate any help and how I should go to for a tune. So far I have been recommended TJM & DPM tullamarine. I'm in north east Melbourne.

1. 2.5 X-force catback made about +10kw alone, before tune on mine so no doesn't 'make' power like headers but yes less restrictive than stock. Like other people have said it will drone to some degree as it's a mass-produced cheap Chinese part. G8 owners in the US swear by fitting a Helmholz Resonator (J-Pipe) axle-back, looked into rectifying the cheap mild steel x-force with that option (more $$ obviously) but my 1850-2100rpm disappeared after headers and cats. Somehow x-force 2.5 catback sounds like it needs headers and cat to get the exhaust pulses hitting the right spot - out the back versus the boot.
2. Bigger diameter doesn't matter, much, before opening engine to cam or forced induction: rule of thumb is straight thru pipes (no restriction) MAX out at 100hp per inch - single 3.5" is good to 350, 2 x 2.5" is good to 500hp, etc. Velocity is a key factor so rather closer to max versus say 50% (2 x 3" = 600hp max / 300hp std). But of course you will want mufflers too... see http://www.google.com.au/url?sa=t&rct=j&q=honda%20exhaust%20theory%20101%20nsx&source=web&cd=9&ved=0CHIQFjAI&url=http%3A%2F%2Fwww.nsxprime.com%2FFAQ%2FMiscellaneous%2Fexhausttheory.htm&ei=DUcPUL2bEKKDiwL-sIDwDA&usg=AFQjCNGQQ5ABDAMu9_M3UgQZLWWwxfj9VA
3. Sound is subjective, ultimately about the cans axle-back more than anything else, not all about diameter of pipe. Headers and cats make noticeable difference.
4. Correct.
5. Correct.
6. No, whether the tuner uses one, two or three air inputs to the tune doesn't make it less valid as a result. You really only need lambda, according to the two tuners I use. There seems to be a confusion here about not using the sensor's inputs and removing it altogether. Mafless doesn't mean you rip it out - it houses the Intake Air Temperature sensor and you'd need to find a pretty complex replacement for the housing.
7. No, have spend thousands on the dyno with both modes of tune. Can't see a big difference, depends on the tuner's software and innovation I suppose but I'm happy with results both ways.

 

[Not_An_Abba_Fan]

What did the the exhaust cost ya, and where is Not_An_Abba_fan, as I'm in Melbourne. Postage?

2 1/2" twin cat back Manta is $1175 shipped. Comes with everything needed to bolt up.

 

[peteyb12]

2.5" stainless catback from hitech mufflers in sydney sounds awesome and pacemaker extractors! youtube hi-tech mufflers!

 

[DG VE SS 2011]

Hey guys, first time poster, but have read every thread on the exhausts for VE's, and watch all the you tubes videos. I was always interested in the x-force, but when i spoke to them, they said forget it as it will drone (I have a VE SS auto)
I took a drive in with a 2'5 walkinshaw fitted, and wasnt overly happy with it, i cant see how the twin exhaust can flow better with one of the twin exhaust being cosmetic!

Going by the threads here, you guys have sold me on the 3' KPM system, i dropped into walkinshaw and they said they dont like to fit them as there is major issues with fitting, and cars are being returned to them (I dont know if they are just trying to sell me the walky system though) so my question is, has anyone heard of fitting issues before?

Does the 3' drone in an auto with the AFM on, and does it drone with the AFM switched off. any advice is appreciated, just rather not drop 3.5k on the KPM power pack and not be happy with it, but the standard SS is just so damn quiet!!

 

[HelmetHead]

I have a VE SSV UTE Auto.

I had a 3" Di Filippo Cat Back system, Tune & Ramjet.. I wasn't overly happy with the Di Filippo because it wasn't loud enough (nice cruise car though, NO DRONE).

Recently threw on a 3" Walkinshaw Headers and Cat Back system (Now this wakes up the neighbours). Cruising it does have a very minor drone, but I drive the car in the tiptronic mode and I rarely notice it, but in normal D mode It does drone slightly.

Overall, Nothing beats taking off in the Walkinshaw though, sounds crazy.