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Originally Posted by travisjb + not a fan of measuring peak HP gains... would rather see the chart... looks like you have solid gains all the way across... would be

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Old 07-17-2009, 06:47 AM   #436 (permalink)
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Originally Posted by travisjb View Post
+ not a fan of measuring peak HP gains... would rather see the chart... looks like you have solid gains all the way across... would be great to have them all on the same chart... good stuff, Mike, thanks for sharing
I spy with my eyes, a nice, fairly flat torque curve - look twords the end of the power band, it looks like it doesn't fall flat on its face, nearly as much. The HFC-only dyno looked like around ~210 ft/lbs, and the HFC+CBE looks like ~220. Nice, solid gains across the board.

However, I'd love to see the graph with RPM's reverenced and not MPH.
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Old 07-17-2009, 10:49 AM   #437 (permalink)
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Quote:
Originally Posted by travisjb View Post
+ not a fan of measuring peak HP gains... would rather see the chart... looks like you have solid gains all the way across... would be great to have them all on the same chart... good stuff, Mike, thanks for sharing
Thats the other part of the equation. Peak dyno numbers are good, but there are so many things that can affect your actual numbers, like 114 degree weather for example. Just look how much the peak numbers fluctuated on the three back to back baseline runs.

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Originally Posted by MightyBobo View Post
I spy with my eyes, a nice, fairly flat torque curve - look twords the end of the power band, it looks like it doesn't fall flat on its face, nearly as much. The HFC-only dyno looked like around ~210 ft/lbs, and the HFC+CBE looks like ~220. Nice, solid gains across the board.

However, I'd love to see the graph with RPM's reverenced and not MPH.
Yes that is on thing we noticed as well is that the power now pulls until redline. Would be cool to get the rev limiter bumped up a bit to see if it keeps going! That will have to wait though. Technosquare, you listening?
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Old 07-17-2009, 05:06 PM   #438 (permalink)
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Just got back from dyno test #2 with the berk cat-back/x-pipe. Gains jumped a little on both horsepower and torque. Weather was another blazing hot 112 degrees today at the dyno shop.



Dyno video coming soon. I think the X-Pipe setup sounds better too!
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Old 07-17-2009, 05:12 PM   #439 (permalink)
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So a gain of almost 13whp from the x-pipe version. In 112 degree heat and with HFCs already installed. Not bad! Not bad at all!
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Old 07-17-2009, 05:18 PM   #440 (permalink)
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Originally Posted by semtex View Post
So a gain of almost 13whp from the x-pipe version. In 112 degree heat and with HFCs already installed. Not bad! Not bad at all!
Yessir! After comparing to a few other exhaust company's results I am VERY impressed! For example, the F.I. exhaust gained 20.38whp over their baseline with the stock cats. Then they added their HFCs to the mix with the cat back exhaust and the HFCs only made an additional 3.54whp. Mainly because the cat-back already had freed up most of the bottleneck in the exhaust system. On the flip side, we tested the Berk HFC's with the stock cat-back and made 19whp, then made an ADDITIONAL 13whp with the cat-back exhaust. So if you take into consideration all of that then I think the Berk did very well compared to the competition!
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Old 07-17-2009, 05:21 PM   #441 (permalink)
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Originally Posted by DDMotorsports View Post
Yessir! After comparing to a few other exhaust company's results I am VERY impressed! For example, the F.I. exhaust gained 20.38whp over their baseline with the stock cats. Then they added their HFCs to the mix with the cat back exhaust and the HFCs only made an additional 3.54whp. Mainly because the cat-back already had freed up most of the bottleneck in the exhaust system. On the flip side, we tested the Berk HFC's with the stock cat-back and made 19whp, then made an ADDITIONAL 13whp with the cat-back exhaust. So if you take into consideration all of that then I think the Berk did very well compared to the competition!
Well when you put it like that, I guess Berk did alright.
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Old 07-17-2009, 05:22 PM   #442 (permalink)
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Originally Posted by semtex View Post
Well when you put it like that, I guess Berk did alright.
I am sure we will find out exactly how they do in comparison as soon as the F.I. exhausts start finding their way onto Zs which already have the Berk HFCs.
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Old 07-17-2009, 05:24 PM   #443 (permalink)
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X-Pipe dyno video is up!

YouTube - Berk Technology Prototype Exhaust #3 Dyno Test
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Old 07-17-2009, 05:25 PM   #444 (permalink)
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Originally Posted by DDMotorsports View Post
I am sure we will find out exactly how they do in comparison as soon as the F.I. exhausts start finding their way onto Zs which already have the Berk HFCs.
Or, conversely, when someone puts a Berk CBE onto a car with stock cats and does a before/after dyno.
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Old 07-17-2009, 05:30 PM   #445 (permalink)
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Quote:
Originally Posted by DDMotorsports View Post
Hmm...at the end of the clip, it says +13whp and +8tq over baseline with stock exhaust. Thing is, that kinda implies that your baseline was completely stock, i.e., you're running stock cats as well, which isn't the case. I guess what I'm trying to say is that, by phrasing it as such, you might be selling yourself short. People won't take into account that you already have HFCs on the car and think "+13whp? Is that it?"
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Old 07-17-2009, 05:32 PM   #446 (permalink)
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Quote:
Originally Posted by semtex View Post
Hmm...at the end of the clip, it says +13whp and +8tq over baseline with stock exhaust. Thing is, that kinda implies that your baseline was completely stock, i.e., you're running stock cats as well, which isn't the case. I guess what I'm trying to say is that, by phrasing it as such, you might be selling yourself short. People won't take into account that you already have HFCs on the car and think "+13whp? Is that it?"
True, I am working on a new video though once they decide which version goes to production. The final Berk cat-back video will have the dyno vids, in car, idle & rev, photos, etc. Then these will be deleted.
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Old 07-17-2009, 05:47 PM   #447 (permalink)
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Ok, back to the project car as a whole. Now that the exhaust is on and testing is done I have these projects waiting for the car next!

- Unorthodox Racing Crank Pulley
- Blue Batmobil smoked tail light and third brake light overlays
- Those carbon side skirt things from VIP-Status' car
- And a new sub-frame tie brace to try from GTSPEC
- And a Project Kics magnetic drain plug that will hopefully fit in the diff, if not it will go in the engine.

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Old 07-17-2009, 06:15 PM   #448 (permalink)
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Can't wait to see the final vid
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Old 07-17-2009, 06:16 PM   #449 (permalink)
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Just wait for the x pipe numbers
X-Pipe numbers are up at the top of the page lol.
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Old 07-19-2009, 10:40 PM   #450 (permalink)
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info on the new gtspec frame brace?
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