What's is the FI exhaust the most popular on this board?

[370Zsteve]

Originally Posted by dlmartin81

I too would like to see a direct comparison between the CBE systems. Unfortunately, know one really knows what BERK puts down. All of the documented dyno runs have been with HFC included in the equation. Between F.I. and STILLEN, they're pretty close in terms of HP. I believe F.I. puts out an average of 1-3 extra HP, which isn't much...so you can say it's identical. I forget the TQ numbers.

A few weeks back 3 of us had the oportunity to run back-to-back dynos. My car runs the Berk Xpipe with stock cats, stock intake, 6MT. 2nd car runs an F.I. 18" CF, stock cats and Injen long-tube intake, 7AT. 3rd car, bone stock, 7AT.

Numbers were as follows (Dyno Dynamics, 61F ambient temp):

FI with Injen LT intakes 291HP
Berk w/stock intakes 288.5HP
Stock 274HP

Seems to me the Berk and FI are putting out the same dyno numbers if you factor in +2.5HP for the Injens

I appreciate that this is not the most scientific comparison, but it is what it is. Being able to have all three pulls on the same dyno within 45 minutes of each other with no real temperature change is a positive.

One week later I pulled on a Mustang and the number was 294HP with the same setup. Mustangs and Dyno Dynamics both tend to run conservative numbers from what I've read here.

I plan on another pull on the Mustang with Stillen G3 intakes installed sometime in the next 2 weeks.