0949er

yes that is 100% clear thank you.

So if intake manifolds are such a bottle neck, why isn't there much focus on them in regards to producing power? Hell, the only intake manifold I know of that isnt stock is the typhoon one, and it seems that all you hear about that is it is a expensive waste of money.

How would adding a throttle body/plenum add to my air intake?

02stang2113

Not sure if it makes much of a difference but he also has u/d pullys and a CAI... and maybe a better tune?

WannaBeGearHead

Adding a new TB/Plenum may help just a bit but the air still has to go through your intake manifold, which is still your limiting factor.

People don't add a new intake manifold because most people have just boltons and to really see "worthy" gains, you need cams and or heads to make it worth buying.

If I were you I would look into a new intake ($500 or so) and bigger injectors.

02stang2113

Take a look at this... its had some info about manifolds
Edelbrock Victor Jr. Manifold questions...

mrtstang

OP, what i'm saying is that the stock intake manifold will determine where your power drops off. Those stage 2's would pull a little further (same peak numbers with a slight loss down low possibly) with an aftermarket one.

I'm not sure what your total mods are, but my numbers are not too far out of the ordinary. Most full bolt on gt's out here make 260-265 hp. Dynos vary all the time, so keep that in mind too.

Like i stated earlier, you numbers look totally normal...both pre and post cams. Where you car peaks, and drops is very normal.

Unless i'm not understanding your question correctly, i really don't see what the problem or concern is.

0949er

there is no problem really at all. I am just simply trying to understand the actual graph (and why it behaves the way it does)

That's all haha. I like technical info... its juicy

02stang2113

Juicy... Nice word usage. lol

0949er

is that suppose to be a link? because if not, i don't get it lol.

02stang2113

Oh sorry, yea that is supposed to be a link dont know why it didnt work but i think its on like page 5 or something... it has some info about power gains of manifolds and some good brands

01GT4.6

you can't compare 2 different cars on 2 different dynos. Hell you can't compare the same car on different dynos. Dyno #'s can and will get manipulated by tuners to make a "happy customer". We all know that a Mustang Dyno reads higher than a dynojet but my car put down about 15 more rwhp on a MD than a DJ (320 vs 306), once again proving that dyno #'s don't mean squat.
The intake is part of the problem but the stock heads don't help. My car with ported heads made max power around 6k rpms. Ask yourself how how do you really want to rev that engine? Keep in mind that max power isn't where you always shift at. Everyone has their own opinions and research but from what I was told you want to shift at 10% over max hp. That may or may not be correct (probably not which explain why I'm so slow), so that would put me at 6600 rpms, IMO that's plenty high, an aftermarket intake would put it closer to 7k.
Have you ever ran your car at the track with the cams? If so what did it run? the MPH should be the true way to tell the cars power. BTW my car on the DJ on a 100 shot made ~400rwhp (that to me is way off considering it trapped 120.3 mph) Which I think is what JayC traps on a 150 shot and he's over 450rwhp. On that same DJ I made 306rwhp NA and trapped 111mph, IMO that MPH is a tad high for 306rwhp. Hope I didn't confuse you just trying to show that you shouldn't put much stock in dyno #'s.