Fiesta ST Intake Thread

[Joszer]

I just installed my Injen intake and while cruising through town my charge pipe intake temperature stayed within 4-6 degrees of ambient. It was 93 degrees out today. That really isn't a significant difference compared to the stock box. I need to do some more logging with WOT pulls. I have my COBB FMIC at home. I am going to install it in the morning and post with updated numbers.

 

[BlueBomber]

I just installed my Injen intake and while cruising through town my charge pipe intake temperature stayed within 4-6 degrees of ambient. It was 93 degrees out today. That really isn't a significant difference compared to the stock box. I need to do some more logging with WOT pulls. I have my COBB FMIC at home. I am going to install it in the morning and post with updated numbers.

they're going to ask you for datalogs.

use your accessport's datalog feature (just press the center button, hit it a few times it'll eventually register and start logging.), record some data and post here. be sure to configure the inputs recorded on the datalog so that IAT charge temp, tp actual, MAP etc are logged.

 

[Sekred]

All this debate is making me feel guilty. Close air box, open filter, cold air, hot air.
My woosh , pssst hole just had to go.
No more scaring little old ladies and puddy cats, sniff, sniff

 

[dyn085]

I just installed my Injen intake and while cruising through town my charge pipe intake temperature stayed within 4-6 degrees of ambient. It was 93 degrees out today. That really isn't a significant difference compared to the stock box. I need to do some more logging with WOT pulls. I have my COBB FMIC at home. I am going to install it in the morning and post with updated numbers.

You would have to be logging intake temp and charge temp to be able to see whatever differences there are, and have a somewhat comparable drive with the OEM box for comparison. The logs I posted above are identical routes at identical times of the day and only separated by 24 hours, and the pictures taken show the ambient temps to be the same. I simply find it hard to believe that a warm-air intake will provide cooler intake temps than the OEM box with OEM inlet and a 3" hole.

Realistically speaking I could be wrong, but no one with the setup seems to be willing to log the data. Fwiw, there won't be anything very revealing by a WOT pull unless you log filter pressure and mass airflow for comparisons. The main difference that people are going to see with these intake changes are going to come from daily-driving within their commute.

As an aside, those that live in cooler climates may not have as drastic of differences as someone in a hotter climate like myself. The ambient temp display doesn't show how miserable this climate is with the added humidity, and humidity has a huge effect on power. Logs could show that a warm-air intake could be perfectly reasonable for those living in a more temperate climate.

 

[iso100]

I don't believe the argument is that a short ram intake is getting colder air than the factory box with a 3" hole...

I think it's about flow. Does a short ram intake flow more g/s than the factory box?

Then there's the $250 question:

Is the increase in flow, although at a slightly higher temperature making more power than slightly less flow at a colder temperature?

 

[dyn085]

I don't believe the argument is that a short ram intake is getting colder air than the factory box with a 3" hole...

I think it's about flow. Does a short ram intake flow more g/s than the factory box?

Then there's the $250 question:

Is the increase in flow, although at a slightly higher temperature making more power than slightly less flow at a colder temperature?

I did a search for the 'unlimited plenum' thread and found nothing.

I haven't downloaded my logs from today yet, but I will say that the closed box seems to be showing *much* better in terms of temperatures. I can say that filter pressure was reduced when I cut the hole, but mass air still measured to be the same. This tells me that it's breathing easier, but not sucking in additional air. It's not anything different than I was expecting because, generally speaking, a turbocharged motor doesn't usually see the benefits with simply an intake change.

Also, someone here posted logs somewhere showing that there were no detrimental side-effects from the use of the BOV adapter. The OEM diverter blows the air back into the intake tract, which isn't a sealed unit, so the additional air just blows back out the filter. The BOV adapter does basically the same thing but shortcuts the path of going back into the tract and then out the filter.

Bolded and underlined. I would like to see similar logs from an intake for comparison, but no one wants to log them. If there's still nothing logged by the time I have an intake I will log mine for comparison and conclusion.

 

[iso100]

Bolded and underlined. I would like to see similar logs from an intake for comparison, but no one wants to log them. If there's still nothing logged by the time I have an intake I will log mine for comparison and conclusion.

I suppose I could put my stock box back in, do a log and then quickly put my setup in to do another log... it's just not really worth the effort right now while I still don't have filter mounts properly fabricated. Right now it's hung ghetto style with a zip tie.

It's not really about "not wanting" to log... but rather not having the time to do the back to back logging in similar conditions required for a proper comparison. I'm happy with my custom intake so far... I think my last thing to do is to 3d print some proper brackets and also close off the top of the filter (mine is facing down towards the ground) from engine air that I believe is getting sucked out the hole...

Even with the currently slightly higher than stock intake air temps I still enjoy the noise and can definitely feel an improvement in power at WOT. The logs would really be for other people, not myself.

 

[iso100]

BTW we already discussed this in my CAI build thread.

 

[TheStig]

Um... im going from a stock box with a COBB/Green panel filter to an injen.

I would be willing to do some logs and post them but i have no clue how, i know how to log, i dont know how to post them or anything. Someone point me in the right direction and ill plan ahead to log before the install and after so there is only an hour to 2 difference between the two.

 

[dyn085]

Um... im going from a stock box with a COBB/Green panel filter to an injen.

I would be willing to do some logs and post them but i have no clue how, i know how to log, i dont know how to post them or anything. Someone point me in the right direction and ill plan ahead to log before the install and after so there is only an hour to 2 difference between the two.

I'll pm you my number if you want to call and I'll walk you through it.

 

[TheStig]

I'll pm you my number if you want to call and I'll walk you through it.

PM returned! Thanks for the help.

 

[TheStig]

I have failed you guys, got in a rush between some rain yesterday and installed the intake, completely forgot to take any datalogs with AP.

The injen intake is VERY loud, even with the radio halfway up and the windows up i can still hear a bit of the diverter valve. We shall see if i grow into it, IF i do not then i will take some logs before and after i take it off.

Its fun to hear the spool and DV but i may tire of it since it is pretty loud.

Butt Dyno says LARGE increase in throttle response and spool time. On the freeway i saw about 5 degrees from ambient on the charge air temp. Was roughly 85 out and i was seeing 89-92 degrees.

 

[Joszer]

I know this sounds silly but has anyone tried to 3d print a cover or box for the Injen system? I was thinking about making a crude functional one out of fiberglass.

 

[TheStig]

I know this sounds silly but has anyone tried to 3d print a cover or box for the Injen system? I was thinking about making a crude functional one out of fiberglass.

My co-worker has a 3D printer and we are currently mulling over the idea. Wouldnt be too hard at all but time consuming given the fairly large size.

 

[Original J-Pat]

So which one is the best? lol

 

[re-rx7]

Right now I'd lean toward the drop-in and stock box.

 

[Kip2MyLou]

Leaning toward that also. I'm still waiting for Cobb's but right now a drop in seems fine.

Rather put that money toward an intercooler or exhaust system.

 

[Original J-Pat]

Yea I'll wait for the cobb one too cuz ill probably buy an Cobb AP first

 

[stuntdoogie]

I desperately Want the swoosh but i rather save that money for cobbs and just keep using the dropin.

 

[FocusMike]

I wonder if Cobb's intake will end up looking like the one they had on the Tanner Foust car at SEMA 2013.

It looks as if it still retains the bottom part of the stock airbox.