Today we had a chance to do a back to back test against our already well performing AMS ported race head compared to our new AMS CNC Ported Race head. The results were GREAT!

Quoted from our tuner Chris Black:

"Excellent Results From The New AMS CNC Head!!

Jared brought his car back to us solely for the addition of the new AMS CNC head and a re-tune on 93oct pump gas. Ivan strapped the head on the car and I had an opportunity to get it on the dyno last night. The results are very impressive to say the least. The only thing changed on the car was the head. Everything else was left exactly the same. "

A few details:

AMS 850R kit
AMS Standard FMIC!!
AMS Intake Manifold

No other changes made at all
93oct pump gas
23.5 PSI



For those of you that like chewing on hard data, Here is the difference in Fueling at 23 psi.


Crazy results going from our current high performing ported head to our new CNC Ported head!

 

That's a healthy increase!

 

yeah, 540 whp on only 23.5 psi is pretty damn impressive too.

Eric

 

Wow Great numbers period!
23.5psi Holy ****!
What a difference that head made! Great Job AMS!!!

 

Nice!

 

If I have a regular AMS race head, can I send it back for credit on a new CNC one?

( get this question all the time about turobs )

 

Just curious what happened at 6400rpms? The gains look great everywhere..

 

Great results. Hopefully something will come through the shop and you can do a similar test on a milder build.

 

what percentage gain in CFM do you guys think you've gained from a stock head? Can you post the port flow numbers per port?

 

Holy crap! I'm impressed. I guess I need to change my signature.

 

Changed my signature. Good numbers coming from AMS 850Rs.

 

Nice stuff AMS

Does this car have MIVEC?

 

The dip that around 6400 rpms was a slight falter in the mivec control during that run, which also caused the boost to vary slightly, and subsequently the fueling and timing. Nothing to be worried about

 

Great Job Chris! And the rest of the crew at AMS for a well built beast.

 

Here is a quick question.... Now had this been jsut a standard 2.3 what kind of power differences could we expect?