2 hole mod question

[neilsv6]

i have a vz sv6 04 commodore and was wondering what the benifit of the second whole is???
will i still get the same result if i replace the 90 degree one with a straight pipe and not cut the second whole??

[wadevzss]

Hi Mate, do a search on the two hole mod. You need to buy the MCAI (Monaro Cold Air Induction) piece, and a couple of other items for it. It needs to be trimmed to fit around the coolant tower on the VZ. The snorkel is obviously removed leaving the 90mm hole drawing cold air from around the headlight area. The second hole is of benefit for extra airflow. I have seen people do a second 90mm hole, but i found the area a bit hard to do it, so i did a smaller i think 65mm hole and got some pipe from Mitre 10. I heated the end on the bbq, and put it over a frozen coke bottle and flared the ends. I then sprayed it black to match the airbox. It seemed to work well.

I used it until i got a VY Series 2 HSV airbox, and for the $40 or so it costs to do it is money very well spent.

[neilsv6]

can i pick up the MCAI part up at holden if so would you no how much???
was thje hsv beneficiall would it be recomended to by that instead???

[wikky]

I thought I read somewhere (maybe here) that the MCAI is only about $30-40 from Holden stealerships.

[wadevzss]

Monaro CAI
92102700 Seal - Air CLN $3
92102689 Hose - Air CLN $8 - $9
92096849 Duct - Air CLNR (shroud) $8 - $9

I brought the HSV airbox, VY Series 2, it has a large shute to the guard, because one became available for only $50. I popped the 90mm hole seal, and put the normal VZ intake pipe up to the normal spot. So it flows plenty of air. But I did find the MCAI to be a lot better than the standard setup.

[wadevzss]

To get a HSV airbox, you need to own a HSV or have the VIN details . I have a mate who is a spare parts manager at a major Holden Dealership. These things cost over $300, just for the base, so when I could get one on the LS1.com.au forum off a member for $50, I jumped at it. If you are a member of this forum, enquire if anyone would sell theirs. A lot of these guys have these sort of things in the garage, after going for the OTR (Over The Radiator) intake.

[neilsv6]

I went to my local holden dealership and asked for the shroud that ever1 says and they didnt no wat i was talking about is the shroud the plastic cover that sits above the radiator and the around the water resevoir???
If so wat are ppl using to place around the 2 pipes to prvent air escaping to get better suction???

[soop]

*facepalm*
It doesn't do anything. I've got a monaro airbox in my SS, it made 0% difference over the original one.

[wikky]

I went to my local holden dealership and asked for the shroud that ever1 says and they didnt no wat i was talking about is the shroud the plastic cover that sits above the radiator and the around the water resevoir???
If so wat are ppl using to place around the 2 pipes to prvent air escaping to get better suction???

The first thing you're talking about is the radiator shroud. Nothing to do with the airbox.

Any decent quality (high temp) silicone can be used for sealing around the two pipes in the airbox.

[wikky]

*facepalm*
It doesn't do anything. I've got a monaro airbox in my SS, it made 0% difference over the original one.

That's funny because I picked up an extra 184rwkw when I did my 2 hole mod..................(along with a few other things......)

[wadevzss]

Two Hole Mod and MCAI

Have a look at the above post, it should answer most of your questions.

[neilsv6]

thanx alot that thread answered alot of my questions...
doing the 2 hole mod on the wkend

[morphix]

Has anyone got any pictures of using the MCAI with the HSV Airbox?

[mtharv]

dont no if i missed it but someone said that MCAi shroud could be purchased from holden yet holden had no idea??? so where do u get the shroud from or whats the alternative ?

[SICKTG]

Don't even bother with the shroud get a k&n panel cut the second hole and put two lengths of PVC pipe in

[Brenah]

The part number you are after is
92096849. That is the MCAI shroud

dont no if i missed it but someone said that MCAi shroud could be purchased from holden yet holden had no idea??? so where do u get the shroud from or whats the alternative ?

[Kiddo]

Don't even bother with the shroud get a k&n panel cut the second hole and put two lengths of PVC pipe in

Agreed, but i'd not go the K&N, it can mess with your MAF.

[SICKTG]

Can mess with your
Maf? Where did u hear that champ?

[Kiddo]

Can mess with your
Maf? Where did u hear that champ?

While i was changed from a 2 hole mod + K&N to a Mace CAI, i took the chance to clean the maf. it had dirty oil residue all over it.

Pretty sure this is the reason mace sends kits out with saas pods, not K&N

[SICKTG]

Use less oil on your filter maybe I haven't had any problems with k & n

[klampy]

when i worked at repco i sold alot of the lukey polyester panels compared to the K+N panels. and iv heard the same thing with the maf sensor getting oiled up from the filter oil. a little more maintenance would see that problem gone but.

[Kiddo]

In the end they're all pretty much the same. I only had the K&N for about 500km from new, never had the chance to re-oil it.

But nothing is ever the same, they might have just over oiled it when the made it.

[mtharv]

Did this mod over weekend all was good very happy however I only sometimes can hear the induction sound and when u can it's very noticeable other times it's nothing?? Can anyone tell me why that is?

[whitevz2006]

fitted mcai last weekend but didnt do 2 hole mod very happy with results power up fuel economy down induction sounds great well worth time and costs only $35 best ever.

[mtharv]

Where exactly did u get mcai from mate?