[BlueStreak03]

Those ram air hoods are a marketing gimmick. If I believed every HP gain claim that I heard for the mods I installed on my 04, I would have had a 350 horse N/A car. I've got plenty of dyno sheets to disprove that theory.


The Rolls Royce information that was posted is still 100% valid because the laws of physics don't evolve and neither do the laws of fluid flow. The Rolls engineers could tell they were leaning out because of the backfire condition, this was at speeds no vehicle has any business approaching on a public street. IAC sensor position plays a very minimal part of the equation. The only way you'll get any appreciable gain from a ram air style intake is if you can take air from in front of the radiator and send it down a perfectly straight pipe into the intake manifold. We all know that doesn't happpen. Those Cervinis ram air hoods intake air from a low pressure area on top of the engine hood. All they do is open up more surface area for the engine to draw air in from, they do not raise intake pressure in the least by any other mechanism except that.

[ChrisCerv]

Originally Posted by BlueStreak03

Those ram air hoods are a marketing gimmick. If I believed every HP gain claim that I heard for the mods I installed on my 04, I would have had a 350 horse N/A car. I've got plenty of dyno sheets to disprove that theory.


The Rolls Royce information that was posted is still 100% valid because the laws of physics don't evolve and neither do the laws of fluid flow. The Rolls engineers could tell they were leaning out because of the backfire condition, this was at speeds no vehicle has any business approaching on a public street. IAC sensor position plays a very minimal part of the equation. The only way you'll get any appreciable gain from a ram air style intake is if you can take air from in front of the radiator and send it down a perfectly straight pipe into the intake manifold. We all know that doesn't happpen. Those Cervinis ram air hoods intake air from a low pressure area on top of the engine hood. All they do is open up more surface area for the engine to draw air in from, they do not raise intake pressure in the least by any other mechanism except that.

Well said Blue Streak...

[suprchrgd00GT]

well on the contrary the ram air on the cervini hoods are not a good hp adder in the first place BUT!, the shaker hood on the mach 1's are made to increase hp significantly combining more air flow to the manifold to actually gain that extra 45+/- hp compared to the GT. and very surprisingly the GT and Mach 1's are incredibly similar

[Flex]

Originally Posted by suprchrgd00GT

well on the contrary the ram air on the cervini hoods are not a good hp adder in the first place BUT!, the shaker hood on the mach 1's are made to increase hp significantly combining more air flow to the manifold to actually gain that extra 45+/- hp compared to the GT. and very surprisingly the GT and Mach 1's are incredibly similar

The principle is the same dude. Adding cold air directly to the induction instead of from within the hot engine compartment.

You also can't compare the Mach to a GT as the Mach has the DOHC 4.6 unlike the GT which comes with the SOHC.

[BlueStreak03]

Originally Posted by suprchrgd00GT

well on the contrary the ram air on the cervini hoods are not a good hp adder in the first place BUT!, the shaker hood on the mach 1's are made to increase hp significantly combining more air flow to the manifold to actually gain that extra 45+/- hp compared to the GT. and very surprisingly the GT and Mach 1's are incredibly similar

Actually, the Mach I has the 32V 4.6L as in the 99 and 2001 Cobra's with a different intake manifold and more free flowing exhaust so the comparison between GT intake and Mach I shaker hood doesn't hold water.

[saleen#255]

ok, I have never posted here, so its prolly the wrong spot, I was wonderins is any one out there running a different intake on the 2v? I was thinking of running the tyhoon.. Any feedback would be great.

[BlueStreak03]

Typhoon is not the place to put money for power unless you're pushing tons of boost or a monster nitrous shot.

[flyers]

but if your stock one cracks and needs replacing anyway, why not upgrade?

[BlueStreak03]

Well if you've got a cracked intake and plan on using a monster N2o shot or large amounts of boost in the future, sure. But if you're not planning on that type of future, then it's much more cost effective to just do an OE style plastic replacement.

[CONDOR]

I think everybody inquired this modd. I loved the shaker hood but could never convince myself $600+ was worth an extra 4 horsepower, if that.

Good read on the first page; Now I'm happy I never went through with that upgrade!

[gilomach]

it is foolish to think that an air scoop (like the mach ones) is going to feed the engine,just by itself.no that's not happening.though i have data logged my car and stopping at the light it reads underhood temp at the air intake temp. sensor,when it start moving the temp. lowers.by the time i am 40,it is reading ambient temp.under the hood heat is close to what your thermostat regulates,which will be close to the 200 degrees mark,way higher than ambient anywhere in the us,please.that is a gain,no matter how you put it.the pcm is registering lower temp,so is going to add some fuel to the mix.the more the fuel the more the hp.period it is fuel and just fuel who produces the power.tune from factory,yeah,keep thinking that the enginners are stupid.

[gilomach]

by thew way,10 degrees less equals one horse plus.do your own math.

[gilomach]

the electric fans are just stupid.

[gilomach]

that is the ones that are hook up into the air intake system of a modern car engine. may be in an older go kart (back in the days i have a green limo. sears tm.)i would have love to supercharge it.never tough about my mom's hair dryer.

[Mach1Marauder]

Originally Posted by gilomach

it is foolish to think that an air scoop (like the mach ones) is going to feed the engine,just by itself.no that's not happening.though i have data logged my car and stopping at the light it reads underhood temp at the air intake temp. sensor,when it start moving the temp. lowers.by the time i am 40,it is reading ambient temp.under the hood heat is close to what your thermostat regulates,which will be close to the 200 degrees mark,way higher than ambient anywhere in the us,please.that is a gain,no matter how you put it.the pcm is registering lower temp,so is going to add some fuel to the mix.the more the fuel the more the hp.period it is fuel and just fuel who produces the power.tune from factory,yeah,keep thinking that the enginners are stupid.

Ummmmm..............I sense a lot of sarcasm in your post but you do have quite a few things screwed up.
1. On a Mach1, the IAT in built into the MAF. In the STOCK configuration, the car draws air from two sources, the scoop and fenderwell which are ALL OUTSIDE the enginebay. No stock N/A Mach1 has EVER seen 200*F IAT! No matter how long the stock plastic housing of the MAF is exposed to enginebay heat.

2. LOL...........Your PROPERLY functioning 180* thermostat in a Mach1 has NOTHING to do with with underhood ambient temps.

3. The computer doesn't ADD FUEL based on inlet air temps. It adds TIMING or subtracts TIMING based on inlet air temps


Anyone doubting that the scoop on a MACH1 FUNCTIONS, please explain to me why, with the fender well inlet blocked, my engine exceeded 1.0 VE.


Here's a pic of a Mach1 siting still, yet the scoop is still ingesting air/smoke.

http://farm3.static.flickr.com/2482/...6478d0dd_b.jpg