Today I installed our first set of Cosworth Evo IX cams and I am very impressed

There is no suprize why they do F1, Cart, Indy, WRC etc etc etc

The cams look better made right out of the box - they remind me of the JUN cams I have been using in my Evo

Our test car is a 2006 MR IX with

Knobby glacial grip snow tires

Down Pipe and 02 housing

Stock CAT and CAT Back - customer lives in draconian MA where modified cats and cat back are illegal

STOCK Air box

Walbro pump

MBC

Just dropping in the cams without ANY TUNING what so ever gets us 20 - 28 whp and TQ through the entire power band with the exception of the area below 3300 where we lost a tad of power

The idle is amazing - just right - its a bit racier but it is not agressive

The car "sounds" creat the sound of the cams inside the head has a really great "ring" that I can't describe but it just sounds for lack of a better word - "racey"

Adding some tuning quickly brings in the spool up area we are now making nearly 50 whp at 3,000 and almost 80 TQ at peak TQ

Of course this car is not going to show maximum potential of the IX as he has a stock cat and cat back but it does clesrly show me that the Cosworth Cam is a really quality unit and delivers the power

This is untuned - Stock Cams vs Cosworth Cams - boost exactly the same



This is the final tuned set up - notice the gains on the low end with some MIVEC adjustment (note the top end power is limited due to stock cat and cat back)




Just by way of control - and reference - this is a Stage II IX I tuned today - same dyno settings - no cams - which shows how badly the stock cat and stock cat back is hurting our IX with Cosworth Cams above.

My goal is to test the cams on a Stage II IX to see how much it gains over this

 

was the car tuned previous to the cams?

 

wow im debating either GSC S1 or the coswortht cams.

 

Those are some pretty amazing numbers.

 

I just ordered my S1 cams from GSC and should have them next week once i get tuned i will be posting up my results and hopefully will be just as good if not better.

 

Those are excellent numbers,especially when you take into account the minimal modifications

 

No

 

Was the stock valve train used?

 

I can only speak for myself - after seeing the Cosworth cams I will not sell or recomend any other

They are vastly superior to anything I have seen and the price point is very fair for what you get

retail is $640 and street price is lower

 

Cosworth suggests stock valvetrain if you keep stock rev limit

 

did you install both cams?not trying to be a smart aleck just that somebody told me you only install one cam due to the mivec, and what about a sprocket ,did you install a sprocket or planning to?thanks

 

Cosworth makes specific intake and exhaust cams for the IX.

 

Al - These numbers are not that impressive given the basline was a non-tuned IX...A better comparison would have been to have tuned the car first w/o the cams and then after the tune...I doubt people with tuned IXs will see an additional 50 hp from cams...

 

Edit: Wrong cam comparison.

 

There are many ways to test things - we wanted to see what the cams do on a nearly stock car with no tune - just something that helps me learn about the cams and the MIVEC

This is only my first test of these cams

I will be doing additional testing when I get more cams

These few sets I just got took me two months to get after my initial order - I am sure that I will be testing them on more modifed IX's in the near futire