CAI and Exhaust Question
10-18-2013, 10:45 AM
#31
for fastening fabric
you can't compare cylinder head flow to the airbox flow. this is probably obvious to many people (I hope anyway).
you mentioned that it had been awhile since you looked at the charts. it would really help if you just posted the source of your data instead of simply arguing off to the side.
thanks.
you mentioned that it had been awhile since you looked at the charts. it would really help if you just posted the source of your data instead of simply arguing off to the side.
thanks.
that seems to be the logical conclusion to me. asking me over and over to post charts really isn't going to make them appear in my browsing history. obviously, if i still had them, id post them.
and if you have a 200cfm airbox and 500cfm heads, you have what some would call a "bottleneck". conversely, if you have a 500cfm airbox and 200cfm heads, then you're perfectly fine! this is why id look into that.
10-18-2013, 10:23 PM
#32
Member
i kind of assumed that you'd understand what that meant. if i havent looked at something in, say, 2 years, and it was on some page on the internet, then i really dont remember where i found it, right?
that seems to be the logical conclusion to me. asking me over and over to post charts really isn't going to make them appear in my browsing history. obviously, if i still had them, id post them.
that seems to be the logical conclusion to me. asking me over and over to post charts really isn't going to make them appear in my browsing history. obviously, if i still had them, id post them.
10-18-2013, 10:45 PM
#33
not true my friend
Afe cai stage 2 does gain about 30whp. Plenty of dyno videos out there after adding it. I plan on dynoing mine soon and will post gains as soon as I do. YouTube ecoboost afe cai dyno
you already have a CAI, and your factory airbox already outflows your engine. CAI is good for lightening your wallet and making noise.
you can do an exhaust without a tune. i had one, no probs. i also unhooked the flanges after the resonator and ran it straight piped for a little.
you can do an exhaust without a tune. i had one, no probs. i also unhooked the flanges after the resonator and ran it straight piped for a little.
10-18-2013, 10:59 PM
#34
Member
to ballpark, use the rule of thumb that a NA motor injests about 1.4 CFM / HP at an RPM where HP peaks at.
for example, 360 HP X 1.5 = 504 CFM. If you have an intake/airbox (when i refer to intake in this case, i'm basically referring to the tube upstream of the throttle body) that flows 500 CFM with a 1.5" pressure, then you are losing approximately 6% power do to that restriction (please note the is for a NA motor, not one with boost). if you have a higher flowing intake/airbox (i.e. 1000 CFM @ 1.5" drop), then you can get some of that loss back since the pressure drop of that higher flowing intake/airbox will be less at only 500 CFM.
if the factory intake/airbox flows around 500 cfm with only a 0.2" drop, then it's only losing on the order of 1% power.
on a side note, i would ballpark the cylinder head flow on these 5.0's to be in the 275 to 325 cfm range @ 28" h20.
comparing cylinder head flow to intake/air box flow just doesn't make a lot of sense. i have a set of cylinder heads that flow 271 @ 28" h20 and i run a carburetor that wet flowed 830 cfm @ 1.5". you won't find people running a 300 CFM carb on that set of heads and produce any sort of power. so to say a 300 CFM carb outflows the heads so it's all the engine needs is completely stupid.
10-19-2013, 01:56 AM
#35
for fastening fabric
to ballpark, use the rule of thumb that a NA motor injests about 1.4 CFM / HP at an RPM where HP peaks at.
for example, 360 HP X 1.5 = 504 CFM. If you have an intake/airbox (when i refer to intake in this case, i'm basically referring to the tube upstream of the throttle body) that flows 500 CFM with a 1.5" pressure, then you are losing approximately 6% power do to that restriction (please note the is for a NA motor, not one with boost). if you have a higher flowing intake/airbox (i.e. 1000 CFM @ 1.5" drop), then you can get some of that loss back since the pressure drop of that higher flowing intake/airbox will be less at only 500 CFM.
if the factory intake/airbox flows around 500 cfm with only a 0.2" drop, then it's only losing on the order of 1% power.
on a side note, i would ballpark the cylinder head flow on these 5.0's to be in the 275 to 325 cfm range @ 28" h20.
comparing cylinder head flow to intake/air box flow just doesn't make a lot of sense. i have a set of cylinder heads that flow 271 @ 28" h20 and i run a carburetor that wet flowed 830 cfm @ 1.5". you won't find people running a 300 CFM carb on that set of heads and produce any sort of power. so to say a 300 CFM carb outflows the heads so it's all the engine needs is completely stupid.
for example, 360 HP X 1.5 = 504 CFM. If you have an intake/airbox (when i refer to intake in this case, i'm basically referring to the tube upstream of the throttle body) that flows 500 CFM with a 1.5" pressure, then you are losing approximately 6% power do to that restriction (please note the is for a NA motor, not one with boost). if you have a higher flowing intake/airbox (i.e. 1000 CFM @ 1.5" drop), then you can get some of that loss back since the pressure drop of that higher flowing intake/airbox will be less at only 500 CFM.
if the factory intake/airbox flows around 500 cfm with only a 0.2" drop, then it's only losing on the order of 1% power.
on a side note, i would ballpark the cylinder head flow on these 5.0's to be in the 275 to 325 cfm range @ 28" h20.
comparing cylinder head flow to intake/air box flow just doesn't make a lot of sense. i have a set of cylinder heads that flow 271 @ 28" h20 and i run a carburetor that wet flowed 830 cfm @ 1.5". you won't find people running a 300 CFM carb on that set of heads and produce any sort of power. so to say a 300 CFM carb outflows the heads so it's all the engine needs is completely stupid.
have any dynos showing that a CAI and only a CAI (ie no other mods present) provide substantial gains? outside the margin of error? this, of course, would require some statistical work, and multiple runs.
after all, if youre going to make the claim that CAIs can add some HP, then you need to be able to back it up.
10-19-2013, 02:49 AM
#36
On The Hunt For A Project
sweet dude
have any dynos showing that a CAI and only a CAI (ie no other mods present) provide substantial gains? outside the margin of error? this, of course, would require some statistical work, and multiple runs.
after all, if youre going to make the claim that CAIs can add some HP, then you need to be able to back it up.
have any dynos showing that a CAI and only a CAI (ie no other mods present) provide substantial gains? outside the margin of error? this, of course, would require some statistical work, and multiple runs.
after all, if youre going to make the claim that CAIs can add some HP, then you need to be able to back it up.
10-19-2013, 08:20 AM
#38
Member
sweet dude
have any dynos showing that a CAI and only a CAI (ie no other mods present) provide substantial gains? outside the margin of error? this, of course, would require some statistical work, and multiple runs.
after all, if youre going to make the claim that CAIs can add some HP, then you need to be able to back it up.
have any dynos showing that a CAI and only a CAI (ie no other mods present) provide substantial gains? outside the margin of error? this, of course, would require some statistical work, and multiple runs.
after all, if youre going to make the claim that CAIs can add some HP, then you need to be able to back it up.
NOWHERE in this thread did I make any such bold claims either for or against a CAI on a 2011 and up 5.0.
NOWHERE in this thread did I make any such bold claims either for or against a CAI on a 2011 and up 5.0.
NOWHERE in this thread did I make any such bold claims either for or against a CAI on a 2011 and up 5.0.
NOWHERE in this thread did I make any such bold claims either for or against a CAI on a 2011 and up 5.0.
I don't know how else to stress what I wrote previously and above.
Please take the time to read what I've written in this thread.
Where did I define that a CAI provides substantial gains? Where did I write an aftermarket flows better (or worse for that matter) than the factory?
Quote exactly my statement where you believe I wrote these things.
If you search my posts in other threads on this forum concerning CAIs, then you will probably feel stupid for accusing me of claiming substantial performance gains with a CAI.
I just want you to take the time to research your initial bold claim.
10-19-2013, 08:24 AM
#39
There is only a couple videos, on you tube. Now it isn't my truck because every motor is different but it gives you a ball park. Plus they have the full sheet posted on the manufacturers site afepower dot com if you will. Im just going by numbers I see not numbers on my truck. Guy states ecoboost motors don't like to have multiple runs because it really doesn't like to get hot. Hp and tq drops down drastically under heat. Wonder how much help would a 170 thermostat help
10-19-2013, 08:24 AM
#40
Member
GermanEB who is the owner of Wagner tuning and is a member here manufacturers high quality parts for high performance engines hooked up a OE air box off one of our trucks and compared it to a well know CAI and the results from his flow bench showed the factory air box WITH motorcraft filter flows more cfm than the aftermarket CAI.
Just saying..
Just saying..
Any updates on the list of questions from either of you regarding this particular test setup? Or do you have a link?
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Raptor11 (11-01-2013)