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Yet another dodgy bastard CAI incarnation

Posted: Sun Sep 09, 2007 7:25 pm
by Bennoz
I had to pull mine apart... again, because the location of the MAF sensor was far to close to the actual filter, and the filter was far too close to the cold air feed. For those with non Mivec, take note, the MAF (air flow) sensor is extremely sensitive & I found when a noticeable change in air temp occurred, my idle would go all tits up... especially when pulling up behind a car who's exhaust would be near the cold air pickup point.

So I've moved the MAF sensor further up towards the throttle body. I also redid the legendary FTO338 'sunvisor' reflective heat shield. A bit of a cardboard template & a staple gun goes along way to making the ideal heat shield for ones pod filter 8)

Before: (Note MAF sensor tucked inside the air box)

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After:

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Posted: Mon Sep 10, 2007 1:07 am
by Delvance
Lol @ the sunshield stuff, nice one :P . Setup looks pretty good though! Did you notice any difference in driving it ? I wonder if that single 60mm feed provides enough air though ?

Posted: Mon Sep 10, 2007 9:10 am
by Bennoz
Haven't really given it a good drive yet as I was outta sunlight when I finished it, Will know today :)

The ID of the pipe is 65mm to match the TB & the dyno figures it puts out are pretty good. Ideally I'd like to have used 75mm ID between the MAF & filter to give it that 'throttled' effect of condensing & speeding the flow up, but the next size up dunny pipe available is 90mm :lol:

Posted: Mon Sep 10, 2007 9:16 am
by MissxFTO
Excellent i plan on doing this before our test n tune day!

Let us know how it goes with the new position! :)

...................yey for non mivecs............ :cry:

Posted: Mon Sep 10, 2007 10:09 am
by FtoSam
I miss my mivec...

I hate that im going to the dark side of GR...

And does moving the sensor provide THAT much difference??


I just realised something...

I dont think i have one of those on my new engine...

Will i need it even though im running a full aftermarket ECU??? Im guessing i will... sh*t....

Posted: Mon Sep 10, 2007 10:27 am
by eThix
Hey ben what did you use to make the box?

Posted: Mon Sep 10, 2007 11:05 am
by Bennoz
The outside of the box is the UAS one.

Sure does make a difference Sam, no more random stalls & odd revs at idle. I dunno bout you, but the poms managed to to find a way to tune the GR's up & remove the MAF with one of their own ECU's... The mob that did it was Eurospec if you wanted to try & find out how. I've been trying, but they just want to sell me one of the ECUs lol.

Posted: Mon Sep 10, 2007 11:18 am
by FtoSam
Lol... i dunno how i'll be able to put the sucker in there... its all metal piping.... and theres no room as is...

might have a look round...



And you reckon that sensor is going to be liking 20+psi???

Oh and by the way... engine is leaving perth tonight... will be arriving later this week and hopefully be ready next monday/tuesday...

Posted: Mon Sep 10, 2007 11:24 am
by FtoSam
Oh and to be on topic....

I built a box by buying two oil drip trays from super cheap (aluminium ones) and cutting them up with tin snips...

Then knocking up a box for it, then lining the inside with sunvisor stuff, then sandwiching another layer of aluminium...

Then one more layer of sunvisor stuff to be sure...

Made such a difference... was running an open pod before that... and was nice and noisy, but the power was very stockish... new box = helluva difference..
Total cost:
Pop Rivets and Screws: $2
Sun visor $5
Drip trays $4 x2

took 2 hours to build and fit...


great little project... shouldve made a DIY but oh well...

Posted: Mon Sep 10, 2007 1:50 pm
by rock_it
FtoSam wrote:I miss my mivec...

I hate that im going to the dark side of GR...

And does moving the sensor provide THAT much difference??


I just realised something...

I dont think i have one of those on my new engine...

Will i need it even though im running a full aftermarket ECU??? Im guessing i will... sh*t....
If you are running an aftermarket ECU you shouldn't need it .. I had the whole MAF set up and stuff on an Exlipse 4G63 engine ... Put in the EMS 8860 ECU and no longer needed it ... So you will probably be the same ...

Posted: Tue Oct 30, 2007 8:50 am
by TCGPX
Bennoz wrote:The ID of the pipe is 65mm to match the TB & the dyno figures it puts out are pretty good. Ideally I'd like to have used 75mm ID between the MAF & filter to give it that 'throttled' effect of condensing & speeding the flow up, but the next size up dunny pipe available is 90mm :lol:
Can get 75mm stormwater pipe or 80mm pressure pipe...

I go to the hardware store way too much :cry:

Posted: Tue Oct 30, 2007 8:54 am
by Bennoz
TCGPX wrote:
Bennoz wrote:The ID of the pipe is 65mm to match the TB & the dyno figures it puts out are pretty good. Ideally I'd like to have used 75mm ID between the MAF & filter to give it that 'throttled' effect of condensing & speeding the flow up, but the next size up dunny pipe available is 90mm :lol:
Can get 75mm stormwater pipe or 80mm pressure pipe...

I go to the hardware store way too much :cry:
Im going back to the hardware now!

Posted: Tue Oct 30, 2007 9:08 am
by TCGPX
lol...

Posted: Sat Dec 15, 2007 5:00 pm
by Bennoz
Rebuilt again!! The dunny pipe cracked & I couldn't be assed rebuilding that again, so I bought 2 peices of $65 a pop 75mm Autotechnica 90 degree bends. Couple that with a strategically cut peice of my misses matching blue tafe folder & its a nice sealed unit :D

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Posted: Sun Dec 16, 2007 10:42 pm
by Delvance
Looks much better bennoz. The increased flow capability should help throughout the rev range. Notice any difference ?

Posted: Mon Dec 17, 2007 8:08 am
by Bennoz
Nope :lol:

The fact that the box is sealed better now means its not f**king around at idle as much, to drive it feels a little smoother, but thats about it.