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No Longer Member
deleted
5 Posts
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 Posted - 19 Apr 2005 : 10:07:43 PM
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Hey just wondering if anyone knows much about or has a cold air intake on their 3.8 V6. Do they have much effect on power and fuel economy? Cheers.
Gaz. 
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MrBond-007
P Plater
26 Posts
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Posted - 20 Apr 2005 : 01:51:06 AM
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| I put on a CAI as well as a K&N filter and noticed the pickup seemed to be greatly improved, on my VPV6 |
WHAT?! You went over my Helmet? |
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commodorenut
P Plater
29 Posts
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Posted - 20 Apr 2005 : 09:24:30 AM
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Here's a how to I did on my VS: http://hometown.aol.com.au/Commodorenut/CAI/cai.htm
For VN/VP you need to heat up the outer end corners of the CAI mouth & bend them down a little to let the bonnet close, and you also need to remove or cut the rubber strip under the bonnet to allow air into the mouth.
No real "huge" gains, but it's a bit more responsive in the midrange.
Fuel consumption didn't really change. |
http://www.brockcommodores.com/
The authorised home of the HDT. |
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SlowVac
P Plater
40 Posts
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Posted - 20 Apr 2005 : 6:06:56 PM
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| Commodorenut is right about CAI no real gains with it. |
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No Longer Member
deleted
4 Posts
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Posted - 21 Apr 2005 : 06:52:37 AM
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| Go for a Pod filter, preferably K&N. Definate gains on acceleration, although it can get sluggish when sucking hot air. |
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SlowVac
P Plater
40 Posts
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Posted - 22 Apr 2005 : 4:16:00 PM
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Pod Filter has no improvements unless there is some form of cold air getting to it. The pod filter would sound great in the engine bay but you would loose some performance once the engine is standing in traffic.
Another option is to cut a hole in the bottom of the air box and use flex-hose and duct it to the front of the car. |
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Friedchicken
Starting in the driveway
2 Posts
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Posted - 23 Apr 2005 : 3:22:53 PM
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i was doubtful so i just made one myself. i just got a bit of flat tin and cut/bent it so that it catches all the air that comes over the headlight. personally i think its better than the factory setup cos theres no restriction before the air filter. i painted it black and glued rubber pipe over the edges and it sits tight up to the bonnet.
i noticed absolutly nothing but i doubt anyone would be able to actually pic the say 2-3% difference it might make :) IMHO |
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No Longer Member
deleted
8 Posts
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Posted - 24 Apr 2005 : 11:09:11 PM
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| I also have the factory CAI installed. I didnt notice much of a difference until removing my car bra ( by removing i mean it was stolen off my car) i do notice a little difference, I think from memory local holden dealer sold me part for aroun $40 so it was worth it. |
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No Longer Member
deleted
2 Posts
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Posted - 26 Apr 2005 : 6:57:42 PM
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| I installed the factory CAI on my VN, and it's crap what everyone says about you need to mold the intake thingo over the radiator. You just need a flathead screwdriver and adjust the spring on the underside of the bonnet lid, and keep adjusting it until the bonnet closes easily. |
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SlowVac
P Plater
40 Posts
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Posted - 26 Apr 2005 : 7:19:41 PM
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| Really it does not matter what type of CAI you have along it gets cold air from the front mated with a sport filter like K&N or BMC. |
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commodorenut
P Plater
29 Posts
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Posted - 27 Apr 2005 : 10:38:34 PM
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quote:
Originally posted by Moodles
I installed the factory CAI on my VN, and it's crap what everyone says about you need to mold the intake thingo over the radiator. You just need a flathead screwdriver and adjust the spring on the underside of the bonnet lid, and keep adjusting it until the bonnet closes easily.
By loosening that pin until the bonnet closes easily you are actually raising the entire bonnet - which is not really a proper fix.
Doing so makes the bonnet sit higher right across it's width at the front, creating wind drag & also increasing the chance of the bonnet flipping up at speed due to extra stresses on the catch causing it to fail.
The secondary catch is no help when this occurs either, as it tears out the metal in the radiator support when this happens at approx 80km/h. I'm talking from experience as it has happened to me.
Please! Do it properly. |
http://www.brockcommodores.com/
The authorised home of the HDT. |
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No Longer Member
deleted
16 Posts
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Posted - 22 May 2005 : 01:56:23 AM
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| Ive noticed smoother gear changes as my vn is a 5 speed, there is no bottom end power coz no air is forced in at a stand still but in midrange revs it wants to go and keep going |
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SlowVac
P Plater
40 Posts
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Posted - 22 May 2005 : 2:04:28 PM
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| I found that the engine would run cooler over 70kph. |
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VH BOMB
Learner
8 Posts
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Posted - 18 Jun 2005 : 4:57:10 PM
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I tied the CIA on my Series 1 VN via a 4" 30Deg PVC bend going through bottom of air box and metal underneath into the wheel arch.
Probably couldn't get better air flow with other methods, even with the traditional Holden CIA you can buy. Driving in very heavy rain or puddles could pose a problem though, even with some flyscreen over the inlet end of the PVC bend.
Powerwise - none extra, quality of air filter rules supreme regardless of how the air gets there. This set up with K&N panel air filter I will try on my next 3.8.
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diskfunk
Learner
6 Posts
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Posted - 18 Jul 2005 : 7:42:32 PM
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| Spend the money on a good pod or flat panel filter (K&N) those cheap $40 pods you buy at Autobarn are crap and you will end up dusting your engine, Cai dont make a huge difference more for looks and **** factor |
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gnomie22
Starting in the driveway
2 Posts
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Posted - 18 Dec 2005 : 2:34:23 PM
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| is it worth puttin a hi flo catalytic convertor on my Vn v6. does it give it much extra power?? |
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mouce
National Driver
1525 Posts
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Posted - 18 Dec 2005 : 9:31:03 PM
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| If you've got extractors, a large bore exhaust and forced induction then I'd say go for it. But if it's stock as a rock, just leave the standard cat in there. Put the money toward something else (sound system, brake upgrade, manual (if it isn't already), V8...). |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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