| Author |
Message |
|
  DIY: Cold air intake for Greddy turbo kit
|
|
| Jason |
|
|
Site Admin
Joined: 30 Oct 2006
Posts: 184
Location: North America
|
The Greddy turbo kit comes with a worthless foam filter that sucks in hot engine bay air. I've seen coolant temps at 190 degrees, and intake temps around 140 degrees while driving at a 70 mph speed. If we were to relocate the intake to the outside of the bumper, we would have access to much cooler air - dropping intake temps by up to 50 degrees.
So I bought a 90 degree elbow and a 3" metal pipe (6" long), and connected it to the greddy MAF connector using a 4" long 3" wide silicone hose.
Here is the intake, with pipes already connected. I cut up my old K&N intake and used the rubber part that used to connect the filter to the MAF, to help support the intake through the pass through into the bumper. That way the intake doesn't bounce around or move.
Even though the radiator fans blow hot air, air flow will cool things down. Thus I removed the OEM intake bottom, and allow the radiator fans to blow air into the engine bay and give the engine and pipes air flow. While it might seem counter intuitive, I've been able to touch the pipes after hard driving, and they were just lukewarm.
Finished product:
Prices: $20 for the silicone hose, $10 for the elbow, $10 for the pipe, and $35 for the intake filter. |
Last edited by Jason on Tue Nov 21, 2006 1:56 pm; edited 2 times in total |
|
| Back to top |
|
| Jason |
|
|
Site Admin
Joined: 30 Oct 2006
Posts: 184
Location: North America
|
|
| Back to top |
|
| Jason |
|
|
Site Admin
Joined: 30 Oct 2006
Posts: 184
Location: North America
|
After a few days, I decided to redo my intake. The large intake required a 90 degree elbow, and the filter was far too large to fit in the space provided. I had to remove the bumper rebar to get it in place. Since the rebar is there for crash protection, I wanted to put it back in place.
I had a spare oval shaped K&N filter lying around. so I redid the pipes and managed to get it all squared away without any elbow...
 |
|
|
| Back to top |
|
| lilbenny |
|
|
Joined: 24 Dec 2006
Posts: 3
|
| what about using the AEM design except the piping that runs in the area where the stock airbox use to be just feed the piping or hose to the other outlet? |
|
|
| Back to top |
|
| Jason |
|
|
Site Admin
Joined: 30 Oct 2006
Posts: 184
Location: North America
|
the air in the bumper area (where mine is located) is already ambiant temp (based on air temp readings at the MAF vs outdoor temp)
Having the intake way down in front of the intercooler will allow air to blow across the intake, which seems great at first glance... but it's not going to push air into the engine faster than the turbo. It also puts the intake in the direct path of dirt, water, bugs, etc. I'd rather keep the intake clean - especially since the air isn't going to be any cooler (and thus no real gains) |
|
|
| Back to top |
|
| Sasha |
|
|
Joined: 14 Jan 2007
Posts: 29
|
| Not to hijack your thread but according to what you just said... having the AEM CAI doesn't do anything for your car, since the "Cold Air" is not really cold air? The only benefit would be the less restrictive filter? |
|
|
| Back to top |
|
| Jason |
|
|
Site Admin
Joined: 30 Oct 2006
Posts: 184
Location: North America
|
the AEM/MS CAI will help somewhat over the stock setup with the stock filter - but if you're already sucking in air that is room temp at 80 degrees, sucking that air from the front bumper, the rear bumper, or the roof is all the same - it will still be 80 degrees, and thus your gains will be the same.
The RB ram air intake channels air directly into the intake box, I'd prefer that over the AEM setup, especially since the filter is not in the direct path of water and not situated as low, while allowing water and other stuff to flow out (you'd have to see the design in person or a high res photo to see what I mean) without going up and into the intake.
Just my personal preference though. |
|
|
| Back to top |
|
|
|
