Berk Technology Cat-Back Coming Soon!

kdo2milger · 07-13-2009, 03:56 PM

Quote:

Originally Posted by BerkTech

No plans on an intake system at this time. However I will say that there is a 20% chance of Berk developing a true high performance header system for the HR motor later in 2009. That for another thread and another day though. On to the exhaust weight!

I just put the parts on our shipping scale and here's where we are.

33.2 lbs - rear muffler section
8.6 lbs/ea - B-pipes (there are two)
xx lbs - Y-pipe -The Y-pipes are out for testing at the moment, I expect them to come in around 15lbs. Will update shortly.

For a system that is a true dual (more tubing & more flange connections), with an actual tangential siamessed X-pipe, and flex sections we are taking a slight weight penalty over the factory system but the performance gains FAR outweigh the weight impact.

We could save a few pounds by going with hollow exhaust hangers and thinner flanges but we would rather forgo the 3lb weight savings and build you a more robust exhaust system that should outlast the car.

i'll be going with your hfc's and the x-pipe catback in the near future....just need to decide on a good solid cai system

jmlenz · 07-13-2009, 09:48 PM

Quote:

Originally Posted by BerkTech

For a system that is a true dual (more tubing & more flange connections), with an actual tangential siamessed X-pipe, and flex sections we are taking a slight weight penalty over the factory system but the performance gains FAR outweigh the weight impact.

IINCREASED weight kinda sucks but yes I would say power and tonal quality are still most peoples priority.

M.Bonanni · 07-13-2009, 06:58 PM

Well, I did a baseline dyno on the car today, but I am not happy with it so I think I am going to re-try tomorrow. Basically for some reason either the car is detonating and creating crazy torque spikes, or it is something wrong with the dyno. The air fuel was also in the low 13s which is a little leaner than ideal, especially in the 110 degree Vegas heat. This is the same dyno and shop I have used for all of my past dyno pulls with this car and this same situation happened to me during my original dyno pull when the car was completely stock. Back then, I got gas from a different gas station per the suggestion of the shop, came back the next day, and got a good baseline. I have another appointment for 2:00pm tomorrow that was supposed to be when I dynoed the Berk Cat-back with H-Pipe, but I think I might re-try the baseline. As the intakes may have leaned out the air/fuel ratios a bit, I am going to put the stock ones back in temporarily just as a precautionary measure. I will also get a new tank of gas from a the same gas station I went to before I got a good reading last time this happened. Not sure if any of it will work but I don't think today's dyno is a good baseline for what we are trying to do. Sorry everyone. Hopefully this will only delay dyno numbers for the exhaust one more day.

B1nks · 07-13-2009, 07:10 PM

Quote:

Originally Posted by DDMotorsports

Well, I did a baseline dyno on the car today, but I am not happy with it so I think I am going to re-try tomorrow. Basically for some reason either the car is detonating and creating crazy torque spikes, or it is something wrong with the dyno. The air fuel was also in the low 13s which is a little leaner than ideal, especially in the 110 degree Vegas heat. This is the same dyno and shop I have used for all of my past dyno pulls with this car and this same situation happened to me during my original dyno pull when the car was completely stock. Back then, I got gas from a different gas station per the suggestion of the shop, came back the next day, and got a good baseline. I have another appointment for 2:00pm tomorrow that was supposed to be when I dynoed the Berk Cat-back with H-Pipe, but I think I might re-try the baseline. As the intakes may have leaned out the air/fuel ratios a bit, I am going to put the stock ones back in temporarily just as a precautionary measure. I will also get a new tank of gas from a the same gas station I went to before I got a good reading last time this happened. Not sure if any of it will work but I don't think today's dyno is a good baseline for what we are trying to do. Sorry everyone. Hopefully this will only delay dyno numbers for the exhaust one more day.

Wtf..EPIC FAIL ! I honestly don't care about your baseline. I just want to hear the exhaust and see the final #..I know why the comparison is there but I just don't care anymore.

M.Bonanni · 07-13-2009, 07:12 PM

Quote:

Originally Posted by B1nks

Wtf..EPIC FAIL ! I honestly don't care about your baseline. I just want to hear the exhaust and see the final #..I know why the comparison is there but I just don't care anymore.

Well the final number will still probably be lower than most are expecting. It was 110 degrees here in Vegas today. Not good for making power. Thats the whole purpose of getting a new baseline in the same temp conditions so you can look at the gains between baseline and cat-back instead of the overall number. Since the last time I dynoed the car I have put larger and heavier rear wheels/tires, added JWT intakes, and the air temperature has literally more than doubled. All of those have a huge impact on dyno numbers so the one I did today was ~15whp lower than my last dyno when it air temps were in the low 50s and I was on the stock wheels/tires.

B1nks · 07-13-2009, 08:04 PM

So you're gonna wait until it's 50 degrees again ? Even though you dyno'd lower today the gains will still be the same. I definitely would take the intakes off but the wheels shouldn't really matter much. Tomorrow you should just go ahead and dyno the BERK exhaust with stock intakes. Why don't you do both tomorrow ? If nothing else you should use the rest of the day to install the exhausts and make videos of the sound of the exhaust ! I wanna hear the damn BERK exhausts and make a decision as well as a lot of other people I'm sure. If nothing else it's something to hold us over until we get the rest of the test results that apparently is going to be spread out over this week which isn't a REAL dyno comparison because it lets more variables happen when you don't do the dynos back to back. right ?

M.Bonanni · 07-13-2009, 08:12 PM

Quote:

Originally Posted by B1nks

So you're gonna wait until it's 50 degrees again ? Even though you dyno'd lower today the gains will still be the same. I definitely would take the intakes off but the wheels shouldn't really matter much. Tomorrow you should just go ahead and dyno the BERK exhaust with stock intakes. Why don't you do both tomorrow ? If nothing else you should use the rest of the day to install the exhausts and make videos of the sound of the exhaust ! I wanna hear the damn BERK exhausts and make a decision as well as a lot of other people I'm sure. If nothing else it's something to hold us over until we get the rest of the test results that apparently is going to be spread out over this week which isn't a REAL dyno comparison because it lets more variables happen when you don't do the dynos back to back. right ?

No no no, I am not going to wait until its cooler at all. I want to get a good baseline dyno in this heat though with the stock exhaust so we can get actual gains instead of the one I have which shows torque spikes over 500whp which obviously isn't right. Unfortunately I don't have my own dyno so I am at the mercy of the shop I go to's schedule, but the dynos most likely wont be more than a day apart. I personally think its better not to do it back to back anyway, although some would argue against me. I think the ECU on this car needs a little bit of driving around to learn the new mods. Plus the weather here in Vegas is consistent. Dry and anywhere between 108 and 111 degrees all this week.

I know people are anxious to hear it, but I am not going to install and un-install it just to get a quick video put up a day earlier than I am going to anyway. Sorry if that pisses anyone off.

B1nks · 07-13-2009, 08:30 PM

Quote:

Originally Posted by DDMotorsports

No no no, I am not going to wait until its cooler at all. I want to get a good baseline dyno in this heat though with the stock exhaust so we can get actual gains instead of the one I have which shows torque spikes over 500whp which obviously isn't right. Unfortunately I don't have my own dyno so I am at the mercy of the shop I go to's schedule, but the dynos most likely wont be more than a day apart. I personally think its better not to do it back to back anyway, although some would argue against me. I think the ECU on this car needs a little bit of driving around to learn the new mods. Plus the weather here in Vegas is consistent. Dry and anywhere between 108 and 111 degrees all this week.

I know people are anxious to hear it, but I am not going to install and un-install it just to get a quick video put up a day earlier than I am going to anyway. Sorry if that pisses anyone off.

Killin me smallz..

Minicobra1 · 07-13-2009, 08:36 PM

Quote:

Originally Posted by DDMotorsports

No no no, I am not going to wait until its cooler at all. I want to get a good baseline dyno in this heat though with the stock exhaust so we can get actual gains instead of the one I have which shows torque spikes over 500whp which obviously isn't right. Unfortunately I don't have my own dyno so I am at the mercy of the shop I go to's schedule, but the dynos most likely wont be more than a day apart. I personally think its better not to do it back to back anyway, although some would argue against me. I think the ECU on this car needs a little bit of driving around to learn the new mods. Plus the weather here in Vegas is consistent. Dry and anywhere between 108 and 111 degrees all this week.

I know people are anxious to hear it, but I am not going to install and un-install it just to get a quick video put up a day earlier than I am going to anyway. Sorry if that pisses anyone off.

Mike,
I think Bryan might have a clip of the exhaust with x-pipe, at Idle and revving, maybe you can get him to post it up before things get ugly, LOL

IMO a lot of people on here (not all) are more interested in the sound/tone of the exhaust. On a daily driver, a good part of the driving enjoyment is the tone of the exhaust and engine. Most aftermarket exhaust are going to be pretty close in added hp numbers, somewhere in the neighborhood of 5-10hp. Me personally, I would sacrifice 5hp less for a better sounding exhaust. Of course if it was like 20hp difference, then maybe I would re-consider. but I don't think that will be the case. If there were 3 exhaust systems with only a 5hp difference in power, I would think people would tend to go with the one that sounds most pleasing to them.

Philipp · 07-13-2009, 09:17 PM

Quote:

Originally Posted by Minicobra1

Mike,
I think Bryan might have a clip of the exhaust with x-pipe, at Idle and revving, maybe you can get him to post it up before things get ugly, LOL

IMO a lot of people on here (not all) are more interested in the sound/tone of the exhaust. On a daily driver, a good part of the driving enjoyment is the tone of the exhaust and engine. Most aftermarket exhaust are going to be pretty close in added hp numbers, somewhere in the neighborhood of 5-10hp. Me personally, I would sacrifice 5hp less for a better sounding exhaust. Of course if it was like 20hp difference, then maybe I would re-consider. but I don't think that will be the case. If there were 3 exhaust systems with only a 5hp difference in power, I would think people would tend to go with the one that sounds most pleasing to them.

+1 for Minicobra

B1nks · 07-13-2009, 09:19 PM

Quote:

Originally Posted by Philipp

+1 for Minicobra

+2

M.Bonanni · 07-13-2009, 10:00 PM

Agree with the above statements but I would have to think that most would rather wait one more day for dyno numbers AND sound clips vs. just sound clips.

WShade · 07-13-2009, 10:18 PM

Quote:

Originally Posted by DDMotorsports

Agree with the above statements but I would have to think that most would rather wait one more day for dyno numbers AND sound clips vs. just sound clips.

Stay the course my friend, stay the course.

BerkTech · 07-14-2009, 05:14 AM

It is important to note that we are the ONLY manufacturer that is thoroughly testing their exhaust with HFC's. The two different 370Z's in either video have Berk HFC's installed.

Prototype #2. Berk exhaust with X-pipe & Berk HFC's.

For comparison, prototype#1 without X-pipe & Berk HFC's.

semtex · 07-14-2009, 07:26 AM

Quote:

Originally Posted by DDMotorsports

Agree with the above statements but I would have to think that most would rather wait one more day for dyno numbers AND sound clips vs. just sound clips.

I certainly would. Ignore the poseurs, Mike.

07-13-2009, 06:58 PM	#3 (permalink)
M.Bonanni The370Z.com Sponsor Join Date: Nov 2008 Location: Las Vegas Posts: 2,575 Drives: Fast Rep Power: 1322	Well, I did a baseline dyno on the car today, but I am not happy with it so I think I am going to re-try tomorrow. Basically for some reason either the car is detonating and creating crazy torque spikes, or it is something wrong with the dyno. The air fuel was also in the low 13s which is a little leaner than ideal, especially in the 110 degree Vegas heat. This is the same dyno and shop I have used for all of my past dyno pulls with this car and this same situation happened to me during my original dyno pull when the car was completely stock. Back then, I got gas from a different gas station per the suggestion of the shop, came back the next day, and got a good baseline. I have another appointment for 2:00pm tomorrow that was supposed to be when I dynoed the Berk Cat-back with H-Pipe, but I think I might re-try the baseline. As the intakes may have leaned out the air/fuel ratios a bit, I am going to put the stock ones back in temporarily just as a precautionary measure. I will also get a new tank of gas from a the same gas station I went to before I got a good reading last time this happened. Not sure if any of it will work but I don't think today's dyno is a good baseline for what we are trying to do. Sorry everyone. Hopefully this will only delay dyno numbers for the exhaust one more day. __________________ MikeBonanni.com Twitter: http://www.twitter.com/MikeBonanni Facebook: http://www.facebook.com/MBonanni36 Function > Form

07-13-2009, 10:00 PM	#12 (permalink)
M.Bonanni The370Z.com Sponsor Join Date: Nov 2008 Location: Las Vegas Posts: 2,575 Drives: Fast Rep Power: 1322	Agree with the above statements but I would have to think that most would rather wait one more day for dyno numbers AND sound clips vs. just sound clips. __________________ MikeBonanni.com Twitter: http://www.twitter.com/MikeBonanni Facebook: http://www.facebook.com/MBonanni36 Function > Form

07-14-2009, 05:14 AM	#14 (permalink)
BerkTech The370Z.com Sponsor Join Date: Jan 2009 Location: Irvine CA Posts: 279 Drives: Lots.... Rep Power: 274	It is important to note that we are the ONLY manufacturer that is thoroughly testing their exhaust with HFC's. The two different 370Z's in either video have Berk HFC's installed. Prototype #2. Berk exhaust with X-pipe & Berk HFC's. For comparison, prototype#1 without X-pipe & Berk HFC's. __________________ While the others type fast... Berk Technology goes fast.... See you at the track! OUR NEW PHONE NUMBER: (714) 546-BERK READ THE BERK BLOG HERE Last edited by BerkTech; 07-14-2009 at 05:44 AM.

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07-13-2009, 08:04 PM	#6 (permalink)
B1nks Track Member Join Date: Apr 2009 Location: Houston,Tx Posts: 721 Drives: 2009 370Z Base 6MT Rep Power: 509	So you're gonna wait until it's 50 degrees again ? Even though you dyno'd lower today the gains will still be the same. I definitely would take the intakes off but the wheels shouldn't really matter much. Tomorrow you should just go ahead and dyno the BERK exhaust with stock intakes. Why don't you do both tomorrow ? If nothing else you should use the rest of the day to install the exhausts and make videos of the sound of the exhaust ! I wanna hear the damn BERK exhausts and make a decision as well as a lot of other people I'm sure. If nothing else it's something to hold us over until we get the rest of the test results that apparently is going to be spread out over this week which isn't a REAL dyno comparison because it lets more variables happen when you don't do the dynos back to back. right ?