Quote:
Originally Posted by sittinSideways
Is this "hole" created by the Berk muffler delete?
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It sure is. It's not a huge deal though unless you're pushing the limits of the car, and it's enough to push the balance of the car from under to oversteer. I'd be willing to bet it applies to only a handful of cars on this board. While I noticed the difference, it wasn't enough to cause the car to get loose enough to worry me.
I spent the last weekend testing the latest Berk axleback prototype cornering at 90+ mph, at the limits of grip in the CSG BRZ
Quote:
Originally Posted by Ari PD
If you look at pictures under the car (or look under your own), you will see that there is a rounded cutout in the underbody where the muffler sits. If you replace this muffler with just a pipe, you are bound to have airflow that would otherwise be sent under the muffler going up into this area and potentially creating rear end lift at a high enough speed. @ CSG Mike said that he noticed this when at the track using the original axel back that was just a pipe. That is why I asked him to speak to the new design.
Beyond all that, you're really not looking at serious HP gains by replacing that part of the exhaust. Honestly, one of my main reasons for replacing the factory axelback was for the look. I want larger tips to fill in the area between the rear bump and my factory diffuser. |
Exactly. I will pay for a track day out of my own pocket for ANYONE who can prove that they gained power from an axleback on apples to apples comparisons on the same dyno, same day, beyond the error range of the dyno. Just an axleback.
The Berk Muffler Delete is strictly to reduce weight, and it performs it's function 100%