What price clean air ?
03-28-2015, 12:40 PM (This post was last modified: 03-29-2015 02:13 PM by totta Crolla.)
Post: #1
What price clean air ?

.bmp  stock filter.bmp (Size: 425.3 KB / Downloads: 280)
.bmp  perf filter.bmp (Size: 423.99 KB / Downloads: 538)
Here are a couple of logs from a Freedom ecu using the stock inlet air temp and MAP sensors, the difference between the two is the air filter. One uses a foam filter type with internal bell mouth attached to a piece of Samco hosing onto the throttle body. (31.8 air temp)
The other log is the standard AE86 filter. (This log reads 23.2 air temp)
Logs were taken within ten minutes of each other on a fully warmed engine and the outside air temp was the same.
The outside air pressure was 766 mmHg and as can be seen there is a small restriction in the stock air filter compared to the performance one but the cooler, denser air from the stock filter more than makes up for it.

An analogue brain in a digital World
Find all posts by this user
03-28-2015, 06:07 PM
Post: #2
What price clean air ?
what is the top graph?

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
Find all posts by this user
03-28-2015, 06:09 PM
Post: #3
What price clean air ?
(03-28-2015 06:07 PM)oldeskewltoy Wrote:  what is the top graph?

Full throttle MAP sensor

An analogue brain in a digital World
Find all posts by this user
03-31-2015, 11:09 PM (This post was last modified: 03-31-2015 11:11 PM by jondee86.)
Post: #4
What price clean air ?
Performance filter usually install with the filter located behind the
headlight like so...
[Image: AEU86 AE86 - What price clean air ?]
This gives it a chance to pick up cooler air flowing from the space
around the the back of the bulb holder. With this installation I found
the low rpm performance to be much the same as the stock filter.
But above 5000 rpm the Apexi definitelt pulled harder (subjective Smile)

Cheers... jondee86
Find all posts by this user
04-01-2015, 11:35 AM
Post: #5
What price clean air ?
Subjective ? I agree, mine certainly sounds like it makes more power with the foam filter.
As for air filtering an OEM paper filter is very good and looking at the graphs is there much to choose in actual air flow and its ability to fill the cylinders ?

An analogue brain in a digital World
Find all posts by this user
04-01-2015, 12:05 PM
Post: #6
What price clean air ?
Best position to pickup air is at mid of car, between hood and radiator.
Right where many of stock cars, including AE86, pick up their air in OEM configuration.
Find all posts by this user
04-01-2015, 01:20 PM
Post: #7
What price clean air ?
Honestly I was never a fan of the stock setup on the AE86, at least when it's complete. The plastic pipe going across the radiator to pull in fresh air from the exhaust side isn't an ideal solution if you ask me.

AE86 ex-daily
Visit this user's website Find all posts by this user
04-01-2015, 01:37 PM
Post: #8
What price clean air ?
Not that all factories are getting it done right, but it is a best place to get air.
Primarly because of the fact that air pressure is highest at the mid of the car.

Subaru does it well:
[Image: AEU86 AE86 - What price clean air ?]

And many aftermarket producers:
[Image: AEU86 AE86 - What price clean air ?]
Find all posts by this user
04-01-2015, 02:22 PM
Post: #9
What price clean air ?
Not 100% accurate but a good indication Tongue






Daily Beater: Civic EG5
Work in progress Car: AE86
Find all posts by this user
04-01-2015, 04:14 PM
Post: #10
What price clean air ?
(04-01-2015 01:20 PM)Bean Bandit Wrote:  Honestly I was never a fan of the stock setup on the AE86, at least when it's complete. The plastic pipe going across the radiator to pull in fresh air from the exhaust side isn't an ideal solution if you ask me.
Maybe Toyota did it this way because the fan has a cooling effect on the pipe ?

An analogue brain in a digital World
Find all posts by this user


Possibly Related Threads...
Thread Author Replies Views Last Post
  Fitting Air Con (No PS) to LHD AE86 pack 5 1,366 10-01-2021 12:54 PM
Last Post: pack
  Air Cleaner Assembly Hama86 7 6,265 10-29-2018 03:28 AM
Last Post: Hama86
  AE86 4age engine not starts crank ok backfires to air intake Ryo 18 11,803 08-16-2018 01:36 AM
Last Post: Bean
  Bluetop AFM with air filter izanagi 4 5,539 04-29-2016 07:29 PM
Last Post: oldeskewltoy
  Air filter setup related question heshan 10 7,996 09-26-2011 07:22 PM
Last Post: Bean

Forum Jump:


User(s) browsing this thread: 1 Guest(s)

Contact Us | AEU86 | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication