The REAL bisimoto header test, done by Mikeyspec of Profunction
08-15-2011, 01:54 PM
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The REAL bisimoto header test, done by Mikeyspec of Profunction
So I bought the bisimot header awhile back, and my motor has been taken awhile to get back together so I got in touch with mikey and was like "Hey i've got me one of those fancy bisimoto headers wanna test one???" Mikey responded "Well FO SHO, I'll do it up madd tyte"
and these are his findings of a hytech replica vs bisi fakie vs my REAL bisimoto header
I hope everyone enjoyed this now discuss politely children!
and these are his findings of a hytech replica vs bisi fakie vs my REAL bisimoto header
Originally Posted by Mikeyspec
So here it is.....the long awaited Bisimoto Header Test!!! After years of hearing crazy power claims with the Bisi header we knew that we had to get our hands on one for testing. For those not in the know - Bisimoto claims 22whp gains from switching out a Hytech Replica to the Bisimoto Header with no other changes.
Quoted from his Dyno Vault @ http://www.bisimoto.com/forum/viewto...c338e61f238d3d
"Stock C5 head
Stock C5 Bottom end
Bisimoto V2 Headers
440 cc injectors
Test Pipe
AEM Cold Air Intake
AEM EMS
2.75" exhaust
CTR Cams
22 whp gain on V2; 11ft/lbs of torque
So, 22whp gains from swapping out an already stout header for the bisimoto!? Holy crap....how can you NOT want this header? How are we not seeing cars in race series' like Honda Challenge where your engine must remain stock rape the rest of the field? For any all motor enthusiasts with a backbone this type of claim had to be questioned. Let's say a Hytech replica made 8whp over your stock b18c5 header, and the bisi made 22whp over that. That means you'd make about 30whp on a stock ITR engine by bolting on a header! With a price tag aroud 800-1000 for a custom to spec Bisi header thats a damn good dollar per hp when messing with naturally aspirated honda stuff.
This test has never been done independently. In some cases where people have claimed to test the Bisi header back to back - it was shown that other modifications were done at the same time although their claims were otherwise.
For example you would hear things like
"I tested the Bisimoto header and found 30whp. But i also threw on cams and kinsler ITB's at the same time"
"I tested the Bisimoto header but my car was untuned on a stock header beforehand"
So now its time for something different. We tested a Hytech Replica that was smashed real good from bad ground clearance, a Fake Bisimoto header from China, and a real deal Bisimoto header that was built specifically for a 1.8L engine.
For reference sake our test dummy is a
JDM ITR 98 Spec Engine
AEM Short Ram
Walbro 255
Tuned on eCtune(each header was tuned individually)
Hytech Replica Small Tube smashed goodness
Test Dummies
To make all 3 headers even we used the same 3 inch exhaust on each test. Here is a glance on what we used.
Test #1 - Hytech(smahed) replica
Test#2. Bisi Fakie
Green Line is the Bisi Fakie - Note the midrange loss...pretty brutal
Test#3. Bisi Real
Alright....lets compare the three
Hytech Replica Small Tube vs. Fakie Bisi
Red is Hytech rep - Green is Fakie Bisi
Midrange....ouch
Next is Bisi Fakie vs. Bisi Real
Blue is real - Green is Fake
Not bad China.....
Now the real comparo - Hytech Replica vs. Bisi Real
Red is Hytech - Blue is Bisi
Hey, wheres my 22whp?
Take it easy,
Mikey
Quoted from his Dyno Vault @ http://www.bisimoto.com/forum/viewto...c338e61f238d3d
"Stock C5 head
Stock C5 Bottom end
Bisimoto V2 Headers
440 cc injectors
Test Pipe
AEM Cold Air Intake
AEM EMS
2.75" exhaust
CTR Cams
22 whp gain on V2; 11ft/lbs of torque
So, 22whp gains from swapping out an already stout header for the bisimoto!? Holy crap....how can you NOT want this header? How are we not seeing cars in race series' like Honda Challenge where your engine must remain stock rape the rest of the field? For any all motor enthusiasts with a backbone this type of claim had to be questioned. Let's say a Hytech replica made 8whp over your stock b18c5 header, and the bisi made 22whp over that. That means you'd make about 30whp on a stock ITR engine by bolting on a header! With a price tag aroud 800-1000 for a custom to spec Bisi header thats a damn good dollar per hp when messing with naturally aspirated honda stuff.
This test has never been done independently. In some cases where people have claimed to test the Bisi header back to back - it was shown that other modifications were done at the same time although their claims were otherwise.
For example you would hear things like
"I tested the Bisimoto header and found 30whp. But i also threw on cams and kinsler ITB's at the same time"
"I tested the Bisimoto header but my car was untuned on a stock header beforehand"
So now its time for something different. We tested a Hytech Replica that was smashed real good from bad ground clearance, a Fake Bisimoto header from China, and a real deal Bisimoto header that was built specifically for a 1.8L engine.
For reference sake our test dummy is a
JDM ITR 98 Spec Engine
AEM Short Ram
Walbro 255
Tuned on eCtune(each header was tuned individually)
Hytech Replica Small Tube smashed goodness
Test Dummies
To make all 3 headers even we used the same 3 inch exhaust on each test. Here is a glance on what we used.
Test #1 - Hytech(smahed) replica
Test#2. Bisi Fakie
Green Line is the Bisi Fakie - Note the midrange loss...pretty brutal
Test#3. Bisi Real
Alright....lets compare the three
Hytech Replica Small Tube vs. Fakie Bisi
Red is Hytech rep - Green is Fakie Bisi
Midrange....ouch
Next is Bisi Fakie vs. Bisi Real
Blue is real - Green is Fake
Not bad China.....
Now the real comparo - Hytech Replica vs. Bisi Real
Red is Hytech - Blue is Bisi
Hey, wheres my 22whp?
Take it easy,
Mikey
08-15-2011, 02:02 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
I got to comment first on Mikey's forum so I'll do the same here...lol No surprise in the results....there's no magic bullets in performance parts, just nitrous as some would say...haha. Bisi makes a good header but it is really no better than any other custom header maker, if even that...
08-15-2011, 02:43 PM
#3
A Digital Frontier
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
lol wow crazy *** claims indeed. It beat a smashed to **** replica header by 7whp peak and lost just about that much in mid-range to the destroyed replica. 
Im sure an authentic hytech without smashed runners would destroy that bisi through out the whole power band.
Im sure an authentic hytech without smashed runners would destroy that bisi through out the whole power band.
08-15-2011, 02:43 PM
#4
Honda-Tech Member
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
This test made me say BYAHHH! at the end. Bisi makes some great stuff there is no denying that. With such claims you can't help but laugh when the facts get laid down and it isn't close to what was claimed. Kinda like saying stick that in your pipe and smoke it lol. Top end gains are nice but that midrange is so bad I can't see how the car would even be fun to drive unless you launch and are banging gears all top end like a drag race.
08-15-2011, 03:01 PM
#5
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
waits for the response to the test.i have been interested in this since i read about it. I know a few people that were thinking of buying his header. Proof is in the pudding
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08-15-2011, 03:38 PM
#8
Honda-Tech Member
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
I'm skeptical of any claim made by just about any company nowadays...
Show me proof that your product does what it says and Ill buy..
I'd rather a company be honest and tell me Ill gain 3-4whp over X brand and be accurate than be tricked into buying a part that promises 20whp and fails to deliver...
Show me proof that your product does what it says and Ill buy..
I'd rather a company be honest and tell me Ill gain 3-4whp over X brand and be accurate than be tricked into buying a part that promises 20whp and fails to deliver...
08-15-2011, 03:48 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
I like the Bisimoto parts I have....a LOT. as soon as I read those claims whenever someone from his now-massive sales staff put them up, I knew it would end badly
08-15-2011, 04:52 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
Thank-you for your comparison test. From one setup to another, there will be different horsepower numbers gained from the Bisimoto Header. We always like to see testing with our products by anyone willing to share.
The dyno chart that you shared from the Bisimoto Dyno vault was one example of were there was a very large gain with a Bisimoto Header over another header which is very impressive but of course will not always be the case in different comparisons with a different setup.
If you don't mind me asking can you also share ambient temperature, humidity, air/fuel ratios and intake manifold vacuum of the individual runs between the header comparisons as well the serial number on the Bisimoto header so I can look up the specifications that header was designed for? It is always good to see scientific information for a well thorough comparison.
Julio@Bisimoto Tech Department
The dyno chart that you shared from the Bisimoto Dyno vault was one example of were there was a very large gain with a Bisimoto Header over another header which is very impressive but of course will not always be the case in different comparisons with a different setup.
If you don't mind me asking can you also share ambient temperature, humidity, air/fuel ratios and intake manifold vacuum of the individual runs between the header comparisons as well the serial number on the Bisimoto header so I can look up the specifications that header was designed for? It is always good to see scientific information for a well thorough comparison.
Julio@Bisimoto Tech Department
08-15-2011, 05:34 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
b001820v20rv
heres the dyno graph with AFR
heres the dyno graph with AFR
Last edited by SR20S13; 08-15-2011 at 05:53 PM.
08-15-2011, 05:52 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
wow this only took 2 years for someone to finally test this header, thanks for doing the testing. At least the header made power. I would like to see this header tested on something with some cams, that are bigger then the ctr's in the said above motor. I think it would perform better with bigger cams sense it has a 2.75in collector and stepped primarys but who really knows untill someone can test it and prove it. Just my 2.cents
08-15-2011, 05:56 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
okay i'll list exactly what I sent to bisimoto since i'm sure they will rag on me for this and what this header was "built" for.
B18C1 Block with about 0.02inchs taken off the block or head
Ported B16 Head by RLZ Engineering
81.5mm USDM ITR pistons
Edelebrock Performer-X Intake Manifold
AEM Hybrid CAI (3 inch because i might make my own)
Skunk2 Tuner2 Cams
Skunk2 Tuner Springs/KMS Retainers
Bisimoto Cam Gears
thats what I sent to them so really not much different except the cams
B18C1 Block with about 0.02inchs taken off the block or head
Ported B16 Head by RLZ Engineering
81.5mm USDM ITR pistons
Edelebrock Performer-X Intake Manifold
AEM Hybrid CAI (3 inch because i might make my own)
Skunk2 Tuner2 Cams
Skunk2 Tuner Springs/KMS Retainers
Bisimoto Cam Gears
thats what I sent to them so really not much different except the cams
08-15-2011, 06:22 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
Man o man, good job bro I was just in the process of buying a header, Although i have seen a bisi header (real) they are made beautifully and ground clearance is amazing. That fake bisi did do good though.
08-15-2011, 06:24 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
Exactly.... I run an SMSP B18c1 header on my B18c5 motor and it kicks butt. My header wasn't specifically designed for my build, like this Bisi header was and yet it out performed it on a very similar motor to the one being tested here. A well designed header will perform on everything...it will just perform slightly better on it's intended motor.
As Mikey's test clearly shows, there's no way the dyno chart from their "vault" is going to show that much of a gain going from a real Hytech header to the Bisi unless something was seriously mismatched.
Are you kidding? did you see the complete crap for midrange on both the real and fake header?
As Mikey's test clearly shows, there's no way the dyno chart from their "vault" is going to show that much of a gain going from a real Hytech header to the Bisi unless something was seriously mismatched.
Are you kidding? did you see the complete crap for midrange on both the real and fake header?
08-15-2011, 07:03 PM
#19
A Digital Frontier
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
If you don't mind me asking can you also share ambient temperature, humidity, air/fuel ratios and intake manifold vacuum of the individual runs between the header comparisons as well the serial number on the Bisimoto header so I can look up the specifications that header was designed for? It is always good to see scientific information for a well thorough comparison.
Julio@Bisimoto Tech Department
Julio@Bisimoto Tech Department
That design is just garbage.
08-15-2011, 07:04 PM
#20
Honda-Tech Member
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
Dumb question here, but is there ANY way that the crushed primaries on the hytech rep could have affected its flow properties and thats why it killed the others in the midrange???
Perhaps a minimal amount of backpressure from the dents helped cylinder scavenging at that particular rpm resulting in more power?
I am not a header designer nor a degree in fluid dynamics just wondering...
Perhaps a minimal amount of backpressure from the dents helped cylinder scavenging at that particular rpm resulting in more power?
I am not a header designer nor a degree in fluid dynamics just wondering...
08-15-2011, 07:33 PM
#21
Honda-Tech Member
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
Good test, but if bisi is going to claim that the real header was built for a different setup, why did the fake one almost copy the same powerband? Makes you think.
Thanks mikey for testing the products, we all know it is not a easy task and people that just want to pick it apart will try.
Thanks mikey for testing the products, we all know it is not a easy task and people that just want to pick it apart will try.
08-15-2011, 07:40 PM
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Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
Well, I am a designer and engineer, and really would not even try to make up numbers as many of you here try to insinuate.
I am used to criticism, protests, and even people trying to become popular at my expense; this is not new to me. After all, I have been in this scene since 1993, with many accolades under my belt.
I am very **** when it come to my testing, in controlled environments, and all variables kept at a minimum. I also test sample A, then B, then A again, then B to verify validity. I am alos not satisfied releasing a product until it provides the data that would be awesome to the masses.
This same passion is what lead me to design and build engines like my D15 that ran 10.7s all motor...and my popular F22a insight at low 9s over 151mph n/a.
With over 961 V2 B-series headers sold, and those enthusiasts excited and proud of their power gains, I am also pleased with this design. We have documented from 8 to 22whp gains with Bisimoto V2 units over the aforementioned design. I was proud to show the very best of the testing, and in the Bisimoto dyno vault..amongst those from others around the world.
The cool thing about the custom designs is that they are tailored to each application, and if for me weird reason did not perform as expected, we work with the client to make it right...unlike any company in this scene.
I hope that this post, and others like it, was not an AGENDA, as it does smell like it. From the title (discrediting my A-B-A-B crossover testing and the test performed by others) to the same familiar names that always visit Bisimoto posts to sling mud.
When people post up great power charts and videos with our V2 headers, they are ignored. When posts like this crop up, with accusations, jest and all...people go crazy.
The design is the BEST, and that is why teams worldwide win, and break records. it would be silly of me to tarnish my hard earned reputation by BS'ing with dyno numbers...dur...people would have to buy the units and test them upon purchase, right?
Thanks for the opportunity, nonetheless, for me to shed some light on this.
I am used to criticism, protests, and even people trying to become popular at my expense; this is not new to me. After all, I have been in this scene since 1993, with many accolades under my belt.
I am very **** when it come to my testing, in controlled environments, and all variables kept at a minimum. I also test sample A, then B, then A again, then B to verify validity. I am alos not satisfied releasing a product until it provides the data that would be awesome to the masses.
This same passion is what lead me to design and build engines like my D15 that ran 10.7s all motor...and my popular F22a insight at low 9s over 151mph n/a.
With over 961 V2 B-series headers sold, and those enthusiasts excited and proud of their power gains, I am also pleased with this design. We have documented from 8 to 22whp gains with Bisimoto V2 units over the aforementioned design. I was proud to show the very best of the testing, and in the Bisimoto dyno vault..amongst those from others around the world.
The cool thing about the custom designs is that they are tailored to each application, and if for me weird reason did not perform as expected, we work with the client to make it right...unlike any company in this scene.
I hope that this post, and others like it, was not an AGENDA, as it does smell like it. From the title (discrediting my A-B-A-B crossover testing and the test performed by others) to the same familiar names that always visit Bisimoto posts to sling mud.
When people post up great power charts and videos with our V2 headers, they are ignored. When posts like this crop up, with accusations, jest and all...people go crazy.
The design is the BEST, and that is why teams worldwide win, and break records. it would be silly of me to tarnish my hard earned reputation by BS'ing with dyno numbers...dur...people would have to buy the units and test them upon purchase, right?
Thanks for the opportunity, nonetheless, for me to shed some light on this.
08-15-2011, 07:46 PM
#23
Honda-Tech Member
08-15-2011, 07:46 PM
#24
Honda-Tech Member
Re: The REAL bisimoto header test, done by Mikeyspec of Profunction
