HR intake options
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Joined: Jan 2011
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From: Ft. Hood/Killeen TX
yeah i know i cant use the same intake products (manifold, spacer) as the previous 350z's thats why i was asking if anybody knows where to get something for HR. and, 20whp id say is worth $499
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if you legitimately gained 20 whp under the curve it would be worth a multiple of $499 - but the fact of the matter you wouldn't realistically be able to achieve that type of gain with 5 x the investment. A peak gain of 20whp is different - and I'd be curious how often it is duplicated. Never mind the fact that intake 'gains' are very difficult to actually quantify, far more difficult than an exhaust mod. I'm a Stillen dealer, so I am genuinely interested
Last edited by Z1 Performance; Jan 17, 2011 at 08:56 AM.
The idea behind a CAI is to pull in colder air, as colder air supplies more oxygen than hot air. Physics-wise, it's b/c hot atoms/molecules bounce around a lot, and occupy more "space", thus meaning less of any atom/molecule can occupy a given volume of space. Your engine heats the ambient air under the hood, so it contains less oxygen. Less oxygen = less hp.
So a CAI is a long tube whose filter sits outside of/at the edge of the engine bay. The negative aspect of this setup is that throttle response typically suffers, as the air has to travel a farther distance when you suddenly stab the gas.
The problem is....well, the problem is that there are tons of problems determining the real-world effectiveness of a CAI. Chief of which is....in almost any situation, their is going to be a massive amount of airflow passing through the bumper & through/around your radiator, flushing out most of that hot air under your engine bay. But, we don't really care about the entire engine bay, b/c with a short-ram or stock-style intake, the filters are located almost directly in front of the bumper!!! Once the car starts moving, you're going to see only a couple degree difference between the intake charge on the CAI's vs the SRI's!!!
Anyways, my belief is that the 20whp gains may be factual, but only for a split second, and only from a dead stop under really freaking hot conditions, where you're probably going to be traction-limited, anyways.
Cliff's Notes: Even if the Stillen CAI granted you X more power than any other intake, it would only be for a split second from a dead stop, and only if it were hot as ***** outside. Reason being, as soon as you start moving, ambient air is going to flush out the hot air under your hood.
So a CAI is a long tube whose filter sits outside of/at the edge of the engine bay. The negative aspect of this setup is that throttle response typically suffers, as the air has to travel a farther distance when you suddenly stab the gas.
The problem is....well, the problem is that there are tons of problems determining the real-world effectiveness of a CAI. Chief of which is....in almost any situation, their is going to be a massive amount of airflow passing through the bumper & through/around your radiator, flushing out most of that hot air under your engine bay. But, we don't really care about the entire engine bay, b/c with a short-ram or stock-style intake, the filters are located almost directly in front of the bumper!!! Once the car starts moving, you're going to see only a couple degree difference between the intake charge on the CAI's vs the SRI's!!!
Anyways, my belief is that the 20whp gains may be factual, but only for a split second, and only from a dead stop under really freaking hot conditions, where you're probably going to be traction-limited, anyways.
Cliff's Notes: Even if the Stillen CAI granted you X more power than any other intake, it would only be for a split second from a dead stop, and only if it were hot as ***** outside. Reason being, as soon as you start moving, ambient air is going to flush out the hot air under your hood.
Last edited by doshoru; Jan 17, 2011 at 02:58 PM.
He just threw a number out there. No need to start debates in every thread.
+1
You've already got one of the best (along with the Injen) intakes. If you're going to stay NA, throw on some hi-flo cats, an exhaust, and top it off with a tune. That's really all you can do without boosting.
I guess you could throw in a shot of nitrous, but I know nothing about that stuff.
You've already got one of the best (along with the Injen) intakes. If you're going to stay NA, throw on some hi-flo cats, an exhaust, and top it off with a tune. That's really all you can do without boosting.
I guess you could throw in a shot of nitrous, but I know nothing about that stuff.
The problem is....well, the problem is that there are tons of problems determining the real-world effectiveness of a CAI. Chief of which is....in almost any situation, their is going to be a massive amount of airflow passing through the bumper & through/around your radiator, flushing out most of that hot air under your engine bay. But, we don't really care about the entire engine bay, b/c with a short-ram or stock-style intake, the filters are located almost directly in front of the bumper!!! Once the car starts moving, you're going to see only a couple degree difference between the intake charge on the CAI's vs the SRI's!!!
Cliff's Notes: Even if the Stillen CAI granted you X more power than any other intake, it would only be for a split second from a dead stop, and only if it were hot as ***** outside. Reason being, as soon as you start moving, ambient air is going to flush out the hot air under your hood.
Cliff's Notes: Even if the Stillen CAI granted you X more power than any other intake, it would only be for a split second from a dead stop, and only if it were hot as ***** outside. Reason being, as soon as you start moving, ambient air is going to flush out the hot air under your hood.
My point of all this is that if you replace the intake make sure its properly sheilded or get the true cold air (a la injen). Otherwise you will heatsoak very quickly and it take several at speed minutes to bring temps down.I now have the Injen Long Tubes that I will datalog soon but no longer have the stock ro stillens to obtain same day results.
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From: Ft. Hood/Killeen TX
well ive went from short tubes to the long tubes in the bumper (gen 3) and i can deffinetly feel the difference. between the two.
yeah i know intake, exhaust, test pipes/hi flows, and tune. i was just seeing if anybody knew of anything like the kinetix manifold, hi flow lower plenum, or anything like that so that i can get the max out of my tune when i do it
yeah i know intake, exhaust, test pipes/hi flows, and tune. i was just seeing if anybody knew of anything like the kinetix manifold, hi flow lower plenum, or anything like that so that i can get the max out of my tune when i do it
