My efforts to make my Matrix CAI a true CAI...
06-20-2006, 04:48 AM
#1
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My efforts to make my Matrix CAI a true CAI...
Using duct insulation bought from Lowe's home improvement store I sealed off the open areas in the side and base of the airbox. I'm guessing that Matrix assumed that the inner fender of the car would provide the needed shielding (faulty reasoning) but I don't know why they left half the base open. True, there are some hoses and such to clear but their efforts to make it fit well caused it to be somewhat ineffective at keeping out HOT engine bay air. The Hyperflow does a worse job having just a "shield". Anyway, the box is completely closed up now. No air can come into the box except through the opening that the factory provided. First pic is unfinished, second pic, finished.
<img src="http://pictureposter.audiworld.com/71038/DSC00825.jpg">
<img src="http://pictureposter.audiworld.com/71038/DSC00827.jpg">
Many have questioned the effectiveness of a CAI, referring to it as "placebo" because real gains haven't been seen on a dyno (tho' more have been seen with the Matrix than Hyperflow). But I think it has benefits. It's always been true with a CAI that you won't see big gains on the dyno. And that just makes sense. The air is static. There's no ram air effect. At speed is where a CAI really works. For years tuners have been estimating that a decent CAI may add 10hp at 50mph. Without all the bends, kinks and obstructions of a stock air induction system, it just makes sense that a CAI would make better use of incoming, at speed air.
Just my $0.02...
<img src="http://pictureposter.audiworld.com/71038/DSC00825.jpg">
<img src="http://pictureposter.audiworld.com/71038/DSC00827.jpg">
Many have questioned the effectiveness of a CAI, referring to it as "placebo" because real gains haven't been seen on a dyno (tho' more have been seen with the Matrix than Hyperflow). But I think it has benefits. It's always been true with a CAI that you won't see big gains on the dyno. And that just makes sense. The air is static. There's no ram air effect. At speed is where a CAI really works. For years tuners have been estimating that a decent CAI may add 10hp at 50mph. Without all the bends, kinks and obstructions of a stock air induction system, it just makes sense that a CAI would make better use of incoming, at speed air.
Just my $0.02...
06-20-2006, 05:59 AM
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*significant* is the keyword in that, and no, not significant enough.
To keep the engine a bit cooler, yes...not to create a cooler "ram air" effect with our stock runner from the grill area back.
06-20-2006, 06:12 AM
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70 mph? Any dyno I've seen run has no where near that speed fan.
Most use those large diameter fans that are meant to move volumes of air at lower speeds.
I would think a wind tunnel would be necessary to create a proper ram air effect on a dyno.
Although I've seen guys try and attach compressor hoses to bike ram airs in the past. A lot of duct tape and little gains.
I would think a wind tunnel would be necessary to create a proper ram air effect on a dyno.
Although I've seen guys try and attach compressor hoses to bike ram airs in the past. A lot of duct tape and little gains.
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06-20-2006, 06:26 AM
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Two faulty assumptions here...
1. That this fan can replicate a <i>real</i> 70 mph headwind.
2. That every dyno, especially the ones testing a CAI, are using this "70 mph fan".
2. That every dyno, especially the ones testing a CAI, are using this "70 mph fan".
06-20-2006, 06:43 AM
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?? I never said every dyno uses the same fan. You assumed I was thinking that.
not sure where you got that assumption.
Can you explain the difference between the real wind at 70 mph and one that is blown with a fan? Is it a volume issue? or??
Can you explain the difference between the real wind at 70 mph and one that is blown with a fan? Is it a volume issue? or??