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SWEET
Fully Licenced
600 Posts
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 Posted - 27 Jan 2007 : 1:12:10 PM
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hey again again. another quik question. wat do u think would b best for my car righ now if i was to put alittle bit of work on it and somthing i cuold do myself. thanx again p.s sick of me yet xxxx
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mouce
National Driver
1525 Posts
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Posted - 27 Jan 2007 : 10:52:38 PM
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http://www.vncommodore.com/forum/topic.asp?TOPIC_ID=394
Start with that, it's a good one to get your hands dirty on first up
Then look at a high flow washable air filter, coupled to a Cold Air Intake.
A cat back exhaust system sounds good and can normally be found for $250, 2.5" sounds okay, I have a mate with a VR ute that's got a 3.25" and it sound tough as hell.
Wait a little longer and I'll have a 'how-to' on making your own engine management chips.
It really depends on how good you are with the tools, personally I'd have no second thoughts about getting a full DIY supercharger kit and bolting it all up and tuning it myself. But I know some people who are scared to change their spark plugs. It just depends on what you're comfortable doing.
Go for the high-flow washable panel filter with Cold Air Intake (get a CAI for a VS supercharged V6 from Holden). Clean your throttle body, make sure it opens to 100% and reset the kickdown cable. Set your tyre pressures to about 32psi all around as well, that will help a bit.
If you want it to sound a bit tougher then a cat back system would be a good cheap easy way to do it, but don't expect any performance gains from it, cat back systems are just about sound. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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SWEET
Fully Licenced
600 Posts
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Posted - 28 Jan 2007 : 04:15:17 AM
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| thanx once again mouce and i will try the t/b cleaning tomrow since you got instructions. is the cat bak exaust the thing right in the middle where the transmission sump is. (2.5" and 3.25") is that in inches or somthing? lol bout the super charger think ill let the pro's do that.how much are the cai vs super charger. lol i put my tyre pressure on 38psi lol.. anyways ill try the t/b cleaning and ill let you know how i go. b4dn xxxx |
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VNSVLE
Forum Moderator
1316 Posts
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Posted - 28 Jan 2007 : 2:20:40 PM
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| I have heard mouce that anything bigger than 2.5" on a N/A car is just for noise and actually hinders performance. Am i right in saying this?? |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
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lolo
Fully Licenced
503 Posts
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Posted - 28 Jan 2007 : 7:54:21 PM
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| yeah I heard the same thing, something to do with backpressure or something.... |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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mouce
National Driver
1525 Posts
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Posted - 28 Jan 2007 : 11:21:40 PM
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Given that a LOT of the restriction in the exhaust actually comes from the headers and the cat, anything cat back is just for noise.
So long as you're not going stuipd and getting a cat back milo tin exhaust like so many freaking rice-burners out there, anything up to 3.5" isn't too much of a problem.
If you're going full length then anything over 2.5" and you'll start to drop backpressure too much...HOWEVER...I do know some guys who have had quite a bit of luck running unrestricted exhausts (only in a workshop for legal reasons) and have managed to get massive power gains by retuning them to run without backpressure.
For your average Joe, you need backpressure to keep it all happy. If you're a gun re-tuner it's possible to live without backpressure (or ear-drums), but I wouldn't recommend it.
The VS s/c CAI should be available from Holden for about $60-$70. And 38psi in your tyres...that's getting a little too high. Drop it back down to 32-34psi...it's still a nice firm ride, and fuel ecconomy doesn't suffer too much for it, traction will improve and you're tyres should last a bit better.
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Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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SWEET
Fully Licenced
600 Posts
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Posted - 29 Jan 2007 : 02:58:46 AM
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| coolz mouce again hey ur pretty mature for a 23yo.and u seem to know alot bout cars but anyways wont go there. thanx again b4dn xxxx |
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mouce
National Driver
1525 Posts
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Posted - 29 Jan 2007 : 10:34:10 AM
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Actually, I'm a self confessed nerd.
When I was a P-plater in my VN, I was sick of being hassled by the cops, so I made sure that I knew all the relevant laws backwards. Nothing sh!ts a cop more than having a person on the side of the road quote him/her the exact wording of the Australian Road Safety Act.
I have a couple of minor mods on the car (like a pod filter and so on...) and when I got pulled over for a roadworthy, and I was about to get booked for the pod, I pulled out the e-mail I got from VicRoads stating that Pod filters are legal provided that the car still meets EPA restrictions for noise and polution. He couldn't argue with that, so he had to let me go.
In short...anything can be done to cars so long as you know that it's legal, and can prove it while standing on the side of the road and you have to be able to prove it without being a smart arse or the cop will just ping you for something else.
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Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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SWEET
Fully Licenced
600 Posts
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Posted - 29 Jan 2007 : 11:56:20 AM
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| lol nerd ay i dont think any1 that knows bout cars r nerds but i agree with ya bout the cops getting at ya if ur a smart ass. the other day i got pulled over and just a ruten traffic stop and i started chatting to the cop well he did. anyways i asked him bout my exaust cos the mufflers chopped off i told him if it was legal started the car up so he cuold hear it he said its not not ilegal if u dont have the muffler he said somthing bout rpa or cpa somthing like that he said if the noise is under 95 desabell and not loud like the harly's u hear going past then its legal do u think thats true? anyways nice again chatting to ya and more questions soon b4dn xxxx |
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trizo
Forum Moderator
3091 Posts
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Posted - 29 Jan 2007 : 1:14:15 PM
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lmao... cpa ,dpa, rpa... I think u mean the e.p.a (enviromental protection agency) as far as I know its not illegal not to have a muffler but it is illegal not to have a catalytic converter!!! as 4 95db well sounds about right ,, but dont forget depending on the copper ,wat sort of day he/she has had or the amount of doughnuts eatn!! 95db can go to 65db depending on there mood ,they could sting you with all sorts of sh1t ... a yellow sticker is a favorite of the coppers around here, (w.a) even if the car is all legal they know they can slap a canary at the clik of the fingers... either way they know that the poor driver has to go through the hassle of going over the pits there for making there day better.... I guess what I'm saying is as long as you know what your doin is legal well theres not much to worrie about ,, but that doesnt mean that that johnny blue bum is gonna be nice.....
p.s there are a few good coppers out there dont get me wrong but personaly i'm yet to find 1!!!!! ;) |
3 can keep a secret if 2 are dead |
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mouce
National Driver
1525 Posts
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Posted - 29 Jan 2007 : 2:26:59 PM
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Okay, I've just looked at the EPA regulations, and they are as follows
For vehicles manufactured before November 1st 1983 the maximum exhaust SPL at full load cannot exceed 96dB(A)
For vehicles manufactured after November 1st 1983 (So this is where the VN belongs) the maximum exhaust SPL at full load cannot exceed 90dB(A)
http://www.epa.vic.gov.au/noise/noise_publications.asp |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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trizo
Forum Moderator
3091 Posts
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Posted - 29 Jan 2007 : 5:58:57 PM
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| well there u go your a fountain of infomation!!!! lol hmmm must find out the w.a regs!!!! |
3 can keep a secret if 2 are dead |
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mouce
National Driver
1525 Posts
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Posted - 29 Jan 2007 : 7:00:54 PM
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| I BELIEVE that the noise laws are uniform across the country, I'd like to get some confirmation on this though. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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SWEET
Fully Licenced
600 Posts
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Posted - 29 Jan 2007 : 10:39:12 PM
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| lol yeh thats it e.p.a my bad lol so the copper was right. aww bless him. and isnt 90db like very loud lol coolz but another thing my car aint got an exaust muffler so u know but.... another question how come wen i drive and it reaches bout ummmm.. 80km on idle just cruizing it seems to loose power then i have to let go of the throttle and press it again to idle and itll go bk to normal but at 80km if i rev it up it loooses power but if i put it on 3rd gear or 2nd D it goes ok. so wat is it? is it cos i chopped my exaust off? thats my guess if it is YAY i can b a machanic lol NOT anyways b4dn xxxx |
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VN Mad88
P Plater
32 Posts
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Posted - 31 Jan 2007 : 11:12:10 AM
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| Hey Mouce, just wondering who you talked to about the podfilter letter? Id like to have one in the car just in case... By the way im in SA. Do i go to the SA EPA or SA Transport? Just wondering thanks. |
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mouce
National Driver
1525 Posts
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Posted - 31 Jan 2007 : 11:42:26 AM
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I called into the local cop shop and they told me to go speak to VicRoads (since in Victoria they are the regulatory body that handles all of that sort of stuff), went into VicRoads, got the contact details of the guy I needed to speak to, shot him an e-mail stating that I wanted to put a pod filter on the car but wanted to have proof that it is not illegal to fit one.
I got an e-mail back with an official statement in it.
So go and speak to your local coppers, they'll be able to point you in the right direction. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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SWEET
Fully Licenced
600 Posts
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Posted - 31 Jan 2007 : 2:26:42 PM
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| mouce u havnt answerd my question yet :( look up thanx b4dn xxxx |
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