Modded factory air box

Scott4957 said:
ajpturbo said:
Have you guys ever heard of grasping at straws? Good lord

No, i don't think a straw would work, that is smaller than the snorkel. Anyone else have any ideas?

I have an idea....add a pound of boost and get real power....something you can feel
 
ajpturbo said:
Scott4957 said:
ajpturbo said:
Have you guys ever heard of grasping at straws? Good lord

No, i don't think a straw would work, that is smaller than the snorkel. Anyone else have any ideas?

I have an idea....add a pound of boost and get real power....something you can feel

No its gotta show up on the dyno, the "feel" of the butt dyno just doesn't cut it when we are talking about 100th's of a second off the quarter mile.
 
The agree with Polskifacet because the real restriction lies by the saxophone plumbing limiting the potential amount of air flow that can be had because of the smaller tubing,there is nothing wrong with the oem intake,its one of the best design's in its class.  Z
 
polskifacet said:
Scott4957 said:
Correct me if I am wrong. I don't think there has been any evidence that the stock box can't flow enough cool air to a bolted and tuned car. From what I have gathered, aftermarket intakes have not shown any significant improvement over the stock box with a K&N or a dry flow filter installed. Not saying there is not room for improvement, but if the engine in its current configuration "whatever that is with your parts" can't pull more air and that is not due to a restriction in the intake then what is the point? Cooler air is another story of course, but taking the snorkel off its not going in the right direction.
Right now the snorkel opening area is actually larger than that of the 3 inch intake pipe that connects to the top of the air box so I have to agree that there isn't much point. I think I saw bpd making some type of custom piping which has individual pipes coming from the turbos vs the Y that is there now.

That I would like to see. On the Mazda DISI there was much gain to be had with the intake system even on the stock turbo. They were even making more power with a 3 inch intake when the TIP was only 2.5ish. There was plenty of data to back this up but I haven't seen that for our cars. To be honest I like to see...nothing. It just means the intake system was properly built and we can spend our hard earned cash on something that will develop power. I think an easy way to test this would be to run pipes from the turbos with as few bends as possible out to cone style filters and put it on a dyno. No sense in sciencing out a new intake design if you can't make more power that way. Have any of the tuners weighed in on this in the past? I know many have taken the box off and not flowed more air, how about the saxophone tube?
 
Wrong wrong wrong...

The restriction lies in both turbo wheels...doesnt matter if you have a 10" intake tube....not going to move anymore air with those little wheels period...you guys want more power...get some real turbos

You guys that have changed down pipes have seen the turbine wheel...its barely over 1.5"....that is the restriction...believe it or dont
 
ajpturbo said:
The restriction lies in both turbo wheels...doesnt matter if you have a 10" intake tube....not going to move anymore air with those little wheels period...you guys want more power...get some real turbos

You guys that have changed down pipes have seen the turbine wheel...its barely over 1.5"....that is the restriction...believe it or dont
Agreed, and that's why the turbine upgrade and turbo upgrade products exist.  They do make for a major upgrade to the stock system compared to a CAI.  It's just that CAI is sooooo much more DIY-able for everyone!
 
ajpturbo said:
Wrong wrong wrong...

The restriction lies in both turbo wheels...doesnt matter if you have a 10" intake tube....not going to move anymore air with those little wheels period...you guys want more power...get some real turbos

You guys that have changed down pipes have seen the turbine wheel...its barely over 1.5"....that is the restriction...believe it or dont

Everyone is aware larger turbos or upgraded turbine wheels make more power, no one in this thread is talking about anything but stock turbos and if the air box or an intake can flow more air modified or otherwise. I'm not saying your wrong, in fact I am inclined to agree which is why I have not spent any money on an intake. But no one has come with a definitive answer because none of the intakes that I have found are from the TIP forward on both turbos. On a side note what does it take to have the upgraded turbine wheels installed?
 
If a way is found for the intake to take in more air aren't we really talking about faster spool up times?  That's not really more power just better throttle response which helps the ol' arse dyno.

On the question on upgraded wheels, I didn't have a good experience doing this in a different car but that was a different car and different tuner I'm sure.


Jason
 
$2500 turbo upgrades are a different world when talking about pulling the snorkel off the stock air box. The only thing pulling of the snorkel could do, if you can feed it cold air, is keep the power curve higher for a 100 rpm at the top of the rev range. This is on a stock tune with a K&N intake. Results are negligible IMO.
k&n.jpg
 
I think the stock cai works well and any mods trying to get more sir that the engine dont need is a waste of time. And has been proven over n over on our cars. If we can add cooler air that would of course be good, however that vs cost has not made that a cheap alternative. In my experience and informal testing a aftermarket cai loses some on the low end from sucking in hot air gains an insignificant bit right before the shift, however the cone set up does sound good and may be worth the price of admission just for that!  Your milage may vary....
 
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