Ekselent

Hello.

Now I have start my Cold air intake project.
First I thought I can narrow the radiator for more space.... But that was impossible to do.

Decide the to install the biggest pipe which can accommodate from the turbo inlet to the front of the radiator..
My opinion is 3" is the biggest pipe you can install without bend / press the pipe anywhere.
Order the pipes which thickness was only 0,065" thick... so the inner diameter is 2,875"... the pipe inlet is much larger than OEM.

First of all I took of the front pumper and headlights.
- Then I cut of the radiator ears as you can see at the picture.
I must modify the "ears" from the back and front side also so it was a lot of jobb.
- Then I must cut a hole at the headlight frame plates so the pipe have space enough to turn around to the front of the radiator.
- Next step was to rotate the ABS unit clockwise. I drilled two new holes and use the OEM rubber mounts so it's look OEM.

Ekselent

Hello.

Almost ready
Now I must only weld the pipes together and glass ball blowing the pipes and paint them matte black so they look as OEM pipes.
For me the most important thing was that I want the cold air pipe in one piece... no joints anywhere . I don't like clamps.

The space for the pipe is tight but now it's there and I did't need to press or bend the pipe anywhere.... so I'm pretty happy with the result.
The small radiator as you can see at the picture I move more at the middle so I have more space with the filters.

- I have ordered the silicon hose reducers so I can start with the finishing.
( Size 3"-2,25")

Few specs.
- Turbo inlet hole is 2".
- Speedriven Scorpion intake pipe hole is 2,25" with two Filters.
- New pipe hole is 2,875" BUT longer than Speedriven pipe.

Ekselent

Hello.

More specs.
I have been contact with K&N.
Ask some info regarding the filters because the space is tight.
My power target is + 680. ( Speedriven ECU / TCU , Intercoolers,Downpipes with race cats+my cold air intake ).
- 700 hp need require 1260cfm.
- Speedriven Scorpion K&N filters is SN-2560 and it gives 470 cfm but there is two at one pipe. 470cfm+470 cfm. = 940 cfm.
- Needed filter area is at minimum 90sq inches.

At the moment I have not decide the filter case because I need more info about them...

sgaar

This make no performance change at all, nothing! The air is going to be heated up once it runs through the turbo's which also why you have the intercooler after and not before. If you want to do something, get an updated IC pump and possibly a set of performance IC's.

cnterline

I did something similar to my SL55 after I put a 90mm TB on it ,it def made a difference for me .

Ekselent

I have the money and time ...
I have already bigger coolers ( Speedriven) and better IC pump.
(BMW X5 IC pump)
I had Scorpion intakes and filters before and I'm 100% sure this solution is much better than Scorpions.

BTW... here is my new toy...

Ekselent

I'm also 100% sure about that....

shardul

iTrader: (1)

nice keep us updated!
you will pick up good power with the increased air flow. Check your AFR to make sure you are not running to lean.

sgaar

Yeah, there is a medical term for that....placebo effect.

NEMES1S

I kept telling myself I was going to work on something for my car over the winter....well I guess I'll have to just check out how your project comes along and maybe make up my own. I'm still not sure if the big ramp up from the 2.25 is necessary. I was thinking 3" under the hood to a 4" behind the grille. If there is a benefit to having a big tube under the hood, please explain, but in my mind a smaller pipe keeps the air flowing faster instead of slowing it down to get hotter under the hood.

Thericker

You have no idea what you're talking about CAI's especially on the m275 platform have been proved numerous times by not only members here, but try looking @ what Brabus has done w/Similar CAI modifications on Both the v12 biturbo & new V8 biturbo models.. Gains of up to 50+ hp have been realized.. You are making a complete fool of yourself w/your continued severely uniformed commentary..

Ekselent.. Good design but you need to ditch the aluminum it creates additional heatsoak. Replace w/Silicone tubing as I & multi others have done. Use SS joiners between silicone tubing to connect each progressive section & finally to attach the airfilters etc..

The Modification Term for you is complete asshat. you have zero factual knowledge on any of this.. I & others have complete pre-post CAI Dyno proof making up to 50+ rwhp a few have actual 1/4 mile ET improvements & Trap gain proof as well. Stop ruining/thread jacking & actually try researching what you're miserably flailing on about.

Ekselent

.

I have thinking a lot how to do it.... my opinion is 3" pipe is fine. It's have not any boost pressure in the inlet and therefore I decide to do it this way.
Then I want it to look clean. The reducers are 4,25" long cones (3"-2,25") for as small as possible resistance in the inlet to the turbos... so the vacum air is gone "speed up" a little before the turbo inlet wheels.. I hope so.
I'm also gone hone input conical at the turbo inlet vs reducer . There is small wall for the air.
I mean I'm gone port it there also for max flow.


Thericker...

Thank you...
You are right regarding the inlet tube and the heating inside the pipe and it's better to cut the pipe in sections and put them together with another material.. I have thinking a lot about it... but but we will see what I'm gone choose.
I have still not receive the conical reducers I ordered so I must wait and can't go further with this.

Juha

shardul

iTrader: (1)

well said!!!

Ekselent

News....
Yesterday I ordered new K&N filters.
Everyone now how thight is between grill and radiator so it was difficult to choose right filters.
K&N recomend me to buy RC-2530.
Here you can find the specs .
http://www.knfilters.com/search/prod...x?prod=RC-2530.

This filter flow approx. 848cfm per piece. Nearly the same as two SN-2560 filters together Speedriven use each side.

The reducers arrive and I have spend lot of time to try to install them right with the pipes and it's VERRY difficult... the space is so tight everywhere...
We will see tomorrow if I have find a solution...

Ekselent

Hi..

I had little time to do something today evening.
Decide to go further with this project.
I port both turbo inlet intakes.

- At the first picture you can see the small "wall" at the intake. I made it conical and I'm sure the air flow much better now.

- Second picture its the ported intake.

- Picture 3 and 4. Show the reducer I'm gone use and the pipe also... I cut the pipe so I have bigger angle than 90 degrees because I want the pipe go a little bit down.
Shortest way and more in line with the pipe which is going to the front of the radiator.
You can also see the reducer I bought and cut it shorter. I have more space with the pipe when it's go more down. If I take it more up I get more problems for sure. This is the best solution....

- Picture 5 where the first pipe and reducer is gone be installed. ( Right side ).

Tomorrow maybe I'm ready with both sides...

Ekselent

Hello..

Any :
- questions
- new ideas
- opinions
?????


Juha

spartan7669

Do you happen to know what size those reducers are?

Ekselent

Hi..

The reducers are 4,25" long and in dia. 3" (Pipe inlet) -2,25"(turbo inlet ).
I bought them from here.
http://www.ebay.co.uk/itm/2009839835...%3AMEBIDX%3AIT

Juha

NEMES1S

Looks good but from this angle it looks like there isn't much for the reducer to clamp onto

Ekselent

.

I'm gone use narrow clamps.
Here is a picture with clamps at the inlet pipe.
No probleem.

Ekselent

I have been very busy with another things and therefore had no time with the car.
Here is few pictures about the new K&N filters which I'm gone use. This filters would be even narrower. I can't find any better than this. The space is tight.... to tight

Hope I have time to go further with this tomorrow.

New K&N RC-2530 vs Scorpion K&N SN-2560 filters.

Ekselent

New modification....
I cut OEM engine cover so it fit between both IC....

Ekselent

Many hours of work
The right side pipe is almost ready....
I must do small adjustments before I glass blow the parts and paint then matte black....
I has been forced to press a little bit the pipe so it fit better but not much....
It doesn't even notice..

IS TIGHT EVERY WHERE....

Garyzworld

I did something similar to this with my Supra and to make a long story short be sure to utilize the largest filter that you can. I was on the dyno with a smallish filter and was stuck at 750 RWHP. Pulled the filter and made 900+ RWHP! The small filter was collapsing under full boost. I now run a HUGE S&B filter.

Ekselent

.

Honestly I'm bit worried about it also...
K&N told me it's enough. I have made a little mores space so I think I can install a bit bigger.
Maybe tomorrow I have time enough to go further with this.