Berk HFC Installed w/ Dyno
 

Howdy folks.

Was out earlier today at Atlantic Motorsports in Gaithersburg, MD where I had them install the Berk high-flow catalytic converters on my Z. I had them do a before and after dyno on my car so we could see what the gains where, if any.

My Z already had the Stillen cat-back exhaust, and I don't have any dyno numbers for that add on. This is just "pre" and "post" Berk HFC with a Stillen exhaust.

http://www.flickr.com/photos/30500379@N03/5559091541/

http://www.flickr.com/photos/30500379@N03/5559668994/

I have to say that I am pretty stoked to add almost 8 hp and 6 ft/lbs with such a simple upgrade. In addition to the power increase, the sound is amazing. Very little rasp at all, just a solid baritone note that is subtle at idle and wails at full throttle. Install went smooth; just one broken bolt.

Nothing but good stuff to say so far; I wish I had done this upgrade sooner.

EDIT: trying to get the dyno charts to load up in the post... grrr...

In any case went from 289.6hp and 243.8 ft/lbs to 297.2hp and 250ft/lbs. Very impressed with the flat torque curve of this engine.

Sooo close. Test pipes would have brought you to 300hp even haha.


Good job though man. I wish I got a baseline dyno before modding mine. I can't decide whether or not to get test pipes or HFCs.

Yeah, 300np was so close I could taste it.

I've noticed another sound besides the deeper exhaust note. When your really, really on the gas, there is a audible "woosh" under the note of the exhaust. Doesn't sound like any exhaust leak I've heard before.

Do you have an after market CAI maybe?

That'll give you a "whoosh" sound.

In any case it is probably on the intake side and you just never noticed it before you listened to your car in an enclosed (where the dyno was run) setting maybe.

How much was the install with the dyno runs?

Yeah the guys at AMS are really cool. They did my original tune on my Cobb unit and they have a pretty high reading dyno, I ended up hitting 335whp in 40 degree weather. Dan really knows a lot about the VQ motors and tuning in general.

Nope no CAI and you can only hear it on the inside of the car and it seems to be coming more from the back of the car. I think the ultra-thin non existent sound deadening material might be letting in sounds you might not hear otherwise.

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