Quote:
Originally Posted by Bobiam
I'm wondering about that missing flex section on your new pipe. Will engine torqing and vibration possibly dislodge the new pipe? Or is that compensated for by the connecting sleeves?
Re your mods, I am wondering if you would notice more improvement because adding intake improvements possibly balance with the exhoust improvements, thereby getting more out of the intake than a stock car would. Perhaps speculation is the best we can do without lots of dyno time.
Bobiam
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Bobiam, you can see the size of the connecting sleeves in the pictures posted by Adam. They are rather large and once installed, I felt comfortable about them staying attached. At the same time I plan on looking closely after some miles to make sure everything still looks good.
Your second question is also a good one. I wish I had an answer, but I don't. It would have been nice to have baseline dyno data to quantify any improvements. Since I don't I probably won't do any post-mod dyno tests. I'm just hoping the butt-dyno can detect an improvement. Maybe Jake or someone can answer the question, I'm curious too.
Quote:
Originally Posted by jaykay
I was just about to make my own from turbo tubing. How is the quality of the AFE tube? I notice there are no "flared"/over sized ends to make the connection with the air box and and throttle body.
How is the fit...any air leaks? How much did you pay for the tube/
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jaykay, the quality of the material is quite adequate IMO. It is a hard plastic that is smooth on the inside with some texture on the outside. I do think it could be made better. The size isn't perfect and it therefore doesn't line up perfectly with the throttle body or the air box. Not having the flexible ribs like the OE tube exacerbates the installation process. You have to rely on the large flexible bands to give you enough play to make the connections. I like the design of the OE tube as far as the connection area and clamps. I've only driven a short distance but so far no sign of any leaks. Hopefully this weekend I can put on more miles and check the connections. AFE was willing to sell me the tube, connecting bands and clamps minus the price of the air filter which I didn't need or want (I recently installed a BMC filter). I however bought the whole kit and sold the air filter to a friend for his Boxster. I believe the whole kit was just under $250. Like I said in the earlier post Pedro's solution is probably the most cost effective and just as functional as any. If you are able to make your own I would probably go that route. Unfortunately I don't have very good fabrication skills so I figured I would give the AFE tube a try. If I don't like it I will put the OE tube back on and sell the AFE.
Quote:
Originally Posted by Blue-S
I suspect that the "wart" is a Helmholz resonator which would be designed to cancel noise at a certain frequency, in order to quiet the car down.
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Blue-S, I'm looking forward to listening for changes at different RPM's especially while cruising at highway speeds. My initial reaction was good but I only drove for a short distance.
Quote:
Originally Posted by Adam
I wonder can you get just the intake tube, clamps, and rubber boots? I don't need the filter.
It is made out of a composite or plastic right?
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Adam, yes, they will sell you just the tube and clamps and it is made out of plastic.
Quote:
Originally Posted by chaudanova
but I really wonder if actually swapping out the oem tubing for the aFe unit will make any real world noticable gains. In theory, it seems like it could/should help out, but I'm wondering if the cost:gains can be justified...
Looking forward to what any brave souls find out!
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chaudanova, my guess is just replacing the tube won't make any noticeable gains. I believe replacing the OE air filter with the AFE filter, or in my case, a BMC filter, is responsible for any HP and torque gains (I'm not an engineer so what do I know). I do think the tube will make a different intake noise. It is hard to justify the cost for this alone. But maybe I'm wrong, and in this case, a brave soul!
ddb