For my 03 i've had for last 3 years the Kinetix Top 1/2 manifold which has been working pretty good, and i've got no complaints.

My question is after doing some research , and not really coming up with an answer.
Does the Cosworth really make much of a difference compared?
Is it a better product to get if i were to FI the Z at a later time?
Does it create more HP than the kinetix?(14hp normal 20 with exhaust work)

all in all is it worth getting??

 

the better question is can you find a cosworth...unless its used, be prepared for the wait of a lifetime

 

+1.

 

hmm. well let me rephrase than.

Is the wait to obtain a Cosworth Intake manifold worth it?

 

The wait is overrated if you know what vendor to purchase it from (most allocation). I only had to wait approx ~1.5 weeks to receive my Cos after ordering; the vendor was expecting a shipment and there were a few unspoke for--But expect to pay MSRP.

 

given your mods...no, I wouldn't bother. I also wouldnt bother with a Kinetix either though..a simple spacer would work just fine, but if you already are happy with what you have, just leave it alone

 

well here are my mods as far as the engine goes.

Injen CAI
Kinetix Top 1/2 Manifold
Ground kit
UniChip ( got it from Z1)
UR Pulleys
Stillen Headers
Test Pipes
Borla Exhaust

The rest is pretty much brakes and suspension and aero.