I am some what of a novice when it comes to engine mods. I know the very basics about the motor. From doing a bit of reading through this forum I have gathered that the best mods for my car would be a
69mm Throttle body
25mm manifold spacer
12mm plenum spacer
And 1.9.1 roller rockers - with new push rod????
Is that right ?? It's a stock vy engine. Is it worth doing these mods with a stock exhaust ???
Sorry for all the questions it's something I'd like to do I just wanna make sure what I'm doing is A. Right B. In the correct order C. Not going to waste money cause I should have done my headers or exhaust instead.
Any help would be awesome
Your list looks the goods mate,id retain the stock throttlebody at the moment and get a good catback exhaust.A mandrel bent 2 1/2" will be plenty.Keep middle and rear resonator whatever you do or it will sound like a fartinacan,not cool.
Give your Airflow meter a clean aswell with CRC Contact Cleaner and make sure your car is in good allround running condition before starting mods though.If you have the money then get the headers and catback installed at the same time.
Yea I've been looking at either a 2 1/2 cat back setup I just dont want it to drone. It's a v6 I know that an I'm not pretending to have a v8 so what system do you think would suit that all I want is a nice note when you give it a boot full but quiet when I'm driving normally. Sorry about all the questions as I said I don't want to make the mistake of getting the wrong thing cause I'm under informed.
Unless you're planning on putting a large cam or supercharging your setup, I wouldn't worry about headers, money definitely could be better spend elsewhere.
As for an exhaust system you can use a redback system, or ideally a ex HSV unit.
Hope this helps
got a price on a exhaust, so ill probably do the list as mentioned above and the ehaust all at once.
thanks for the feedback
what exhuast and price did u get?
Redback - catback 2 1/2 - dual dump tips $450 installed
REDBACK 2.5" CAT BACK EXHAUST VT VX VY V6 COMMODORE (eBay item 360310597299 end time 25-Dec-10 19:00:14 AEDST) : Cars, Bikes, Boats
$165 or +$40 for delivery
Its 2 bolts and a clamp, could be done in 30 mins with 2 people or about a hour alone. Easy with hoist or ramps but still easy with jack and stands.
Save some money and do it yourself.
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never having played with an exhaust, is it easy enough to attach different tips on these exhausts????
and that system wont fit my car as its a series 2
im pretty sure exhaust tips are welded on
-The Pommy With A Commy-
I Don't Care What You Say, But My Commy Is The Fastest Car In The World
Ok I'm sold I know someone with a hoist an a welder so I'll do it myself. These systems off eBay are the same as what I'd get from a muffler shop ??
What makes you say a decent set of extractors aren't worth it Steve?
There's always sets going second hand on ebay going for a couple hundred.
If your after an exhaust that doesn't drone I can not recommend "Sureflo" highly enough. They manufacture there own mufflers and specialise in systems that don't drone. They also use extra thickness material in areas of high wear.
Lukey are cheap crap. The end blew out of mine after 2 years
Then tried a redback, the drone drove me mad after 6 months. Saw surefloes ad for drone free and got one of their mufflers.
In hindsight it would have been cheaper to get quality the first time
I’m not the only one who has a similar train of though as well, going by one of many of greenfoam’s response on the matter.
A quality cat back exhaust system alone seems work quite well on even dead standard ecotec with increases across the board. Don’t get me wrong you’ll still gain from using a set of extrators mid to top end just not as much as a cat back for less.
One could go a set of extrators if they wanted to as one of their last mods depending on their driving style I guess (more mid to top end driving), as you will lose torque down low.
If you had some more substantial mods such as a larger camshaft or forced induction then going extractors would certainly offer better value for money.
LS1’s for arguments sake are a different kettle of fish, but we’re not talking LS1’s :P
A system which I’m a big fan of are the HSV items off say a similar era Clubsport, GST etc.