Air Filters.
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From: Lombard .IL
for a car like yours, I would pull them no question, not enough run time to be a problem.
Screenless always seems a bit risky, didn't we hear that Mike Brown's setup ingested a small rock at one point this year? I'd at least run screens.
When I had my YSi blower with just a screen it got damaged from dirt the first time.
When I had my YSi blower with just a screen it got damaged from dirt the first time.
Okay guys, I called and spoke with one of the engineers at K&N today. he did a calculation of my engine size (408), turbo size (91mm), boost pressure (20psi), and RPM (6500) and determined that i need apx. 1800cfm of flow. The filter I have now is only rated at 717cfm!!!the biggest filter they make only flows 1700cfm. They can build a custom filter to any specs, and it will cost about $150
the only problem is that i dont have the physical room to fit anything bigger. I was thinking about cutting a large open hole in the top rubber part of the filter and replacing that with some screen. It couldnt possibly be any worse than what I have now. Any other ideas guys?
the only problem is that i dont have the physical room to fit anything bigger. I was thinking about cutting a large open hole in the top rubber part of the filter and replacing that with some screen. It couldnt possibly be any worse than what I have now. Any other ideas guys?
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9 Second Club
Joined: Nov 2003
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From: Norn Iron
On the UK K&N site, pretty sure it states that when FI is used, you can multiply rated flow by 1.8 or thereabouts.
Any pics of where your turbo inlet is, and space available ?
And flow ratings arent the only story. Those may be quoted flow ratings at zero restriction.
If your filter only posed say 1psi restriction at your current power level, then clearly it is not anything to worry about.
Your turbo downpipe and exhaust system probably pose more of a restriction to airflow than the air filter
Any pics of where your turbo inlet is, and space available ?
And flow ratings arent the only story. Those may be quoted flow ratings at zero restriction.
If your filter only posed say 1psi restriction at your current power level, then clearly it is not anything to worry about.
Your turbo downpipe and exhaust system probably pose more of a restriction to airflow than the air filter
On the UK K&N site, pretty sure it states that when FI is used, you can multiply rated flow by 1.8 or thereabouts.
Any pics of where your turbo inlet is, and space available ?
And flow ratings arent the only story. Those may be quoted flow ratings at zero restriction.
If your filter only posed say 1psi restriction at your current power level, then clearly it is not anything to worry about.
Your turbo downpipe and exhaust system probably pose more of a restriction to airflow than the air filter
Any pics of where your turbo inlet is, and space available ?
And flow ratings arent the only story. Those may be quoted flow ratings at zero restriction.
If your filter only posed say 1psi restriction at your current power level, then clearly it is not anything to worry about.
Your turbo downpipe and exhaust system probably pose more of a restriction to airflow than the air filter
it has a 4" downpipe dumped after the k-member and 2.5" crossovers on the exhaust side
9 Second Club
Joined: Nov 2003
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From: Norn Iron
If you were to re-route the pipe above, you could gain another 3-4" easy.
But I really dont think that filter would be posing much of a problem. Even if it was posing some small restriction, as you're turbocharged all you're doing is asking the turbo to work a little bit harder.
Stick a little test pipe into the top of the filter and stick a vac gauge or manometer type thing and see how much vac there actually is under full load.
I'd be more concerned about having it situated directly behind the hot radiator.
Or if you turned 90deg downwards just at the turbo, that would allow a much longer filter. Although the 90deg would probably negate any size gains
But I really dont think that filter would be posing much of a problem. Even if it was posing some small restriction, as you're turbocharged all you're doing is asking the turbo to work a little bit harder.
Stick a little test pipe into the top of the filter and stick a vac gauge or manometer type thing and see how much vac there actually is under full load.
I'd be more concerned about having it situated directly behind the hot radiator.
Or if you turned 90deg downwards just at the turbo, that would allow a much longer filter. Although the 90deg would probably negate any size gains
AFE makes some great filters also, lots of diesel guys love them. The Pro5r oiled filters are the higest flowing series, here are all their listed sizes http://afepower.com/technology_detail.php?tech_id=11
That looks like the same filter I have. There is no way I'm going to run without after just losing a motor because something got in it. That motor cost me about $2 dollars a mile.
FormerVendor
Joined: Dec 2001
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From: WWW.SPEEDINC.COM
