knightsports hiflow cat???
#26
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count me in for this new high flow cat as well chuck.
provided you actually make them.
One question to everyone though.From what I understand some of the high flow cats come with the air pump bung and some dont.Will this rotary extreme high flow cat have the air pump bung or not? And if it does and I decide to remove the air pump how can I close that air pump bung up? Just a few things im curious about.
But above all Chuck. Now that this info has come to my attention I absolutely want the metal cat.Im sure you will have a lot of sales for this puppy.Especially if it flows almost like a midpipe but without the dangers that come with a midpipe.Keep us posted.or at least keep the site posted as I visit it regularly.Thanx Chuck.
provided you actually make them.
One question to everyone though.From what I understand some of the high flow cats come with the air pump bung and some dont.Will this rotary extreme high flow cat have the air pump bung or not? And if it does and I decide to remove the air pump how can I close that air pump bung up? Just a few things im curious about.
But above all Chuck. Now that this info has come to my attention I absolutely want the metal cat.Im sure you will have a lot of sales for this puppy.Especially if it flows almost like a midpipe but without the dangers that come with a midpipe.Keep us posted.or at least keep the site posted as I visit it regularly.Thanx Chuck.
#30
_________________________
Empire,
I have the Metalit super catalyzer made by Knightsports. The cat has 2 outlets. One for the air pump and the other goes to a cat sensor to check heat. My FD is a US version and does not have the cat sensor. Knightsport supplies a gasket w/cap and screws to close the cat sensor outlet.
Hello Rynberg,
I agree the price is not cheap. Back in january 2003. I did not know anyone on this forum or in europe who had the KS cat. I felt it was a better product compared to others which were on sale at the time in the States.
The Metalit technology sounded perfect to handle the Rotary pulse and heat. With increased flow along with HP gains. The Metalit cat numbers were close to or equal to that of a midpipe in performance but most important to me...... it passed Japans hardest emissions test.
Unfortunately, I do not have any of my own test comparing the KS to a stock cat/ aftermarket highflow or a midpipe. I do have a dyno run taken in Oct 2003 on my FD. I am affraid it might not show justice. I only made one run and I am very conservative when it comes to shooting for high hp numbers. I can post it if you like?
DaiOni,
Does the test mention what year or what mod's the FD was using? There are 2 KS cats. Pro version and Metalit super pro spec.
Before I purchased my Matalit cat I was given this information around Feb of 2003.
Test: FD3S- dual front tube + FD763 type-Z muffler installed: Do not know the yr. of the FD?
HP -
Straight - 330 ps (7000 rpms)
KS cat - 330 ps (7000 rpms)
Genuine - 300 ps 7000 rpms)
Torque -
Straight - 36 kg/n (6000 rpms)
KS cat - 37 kg/n (5500 rpms)
Genuine - 33 kg/n (6000 rpms)
Boost -
Straight - 1.0 kg/cm2 (6000 rpms)
KS cat - 1.05 kg/cm2 (5500 rpms)
Genuine - 0.94 kg/cm2 (5000 rpms)
Hello Chuck,
If you need any measurement ( for comparison) to help you construct your cat. Don't hesitate to ask. I also have a few papers which show emission tests from Knightsports. They are in Japanese and will be happy to send a copy to you.
Twokrx7,
For comparison, the KS diameter is 80 mm in/out which is 3.15 inches and round shaped.
Here is a photo of my metalit cat.
//Oliver
I have the Metalit super catalyzer made by Knightsports. The cat has 2 outlets. One for the air pump and the other goes to a cat sensor to check heat. My FD is a US version and does not have the cat sensor. Knightsport supplies a gasket w/cap and screws to close the cat sensor outlet.
Hello Rynberg,
I agree the price is not cheap. Back in january 2003. I did not know anyone on this forum or in europe who had the KS cat. I felt it was a better product compared to others which were on sale at the time in the States.
The Metalit technology sounded perfect to handle the Rotary pulse and heat. With increased flow along with HP gains. The Metalit cat numbers were close to or equal to that of a midpipe in performance but most important to me...... it passed Japans hardest emissions test.
Unfortunately, I do not have any of my own test comparing the KS to a stock cat/ aftermarket highflow or a midpipe. I do have a dyno run taken in Oct 2003 on my FD. I am affraid it might not show justice. I only made one run and I am very conservative when it comes to shooting for high hp numbers. I can post it if you like?
DaiOni,
Does the test mention what year or what mod's the FD was using? There are 2 KS cats. Pro version and Metalit super pro spec.
Before I purchased my Matalit cat I was given this information around Feb of 2003.
Test: FD3S- dual front tube + FD763 type-Z muffler installed: Do not know the yr. of the FD?
HP -
Straight - 330 ps (7000 rpms)
KS cat - 330 ps (7000 rpms)
Genuine - 300 ps 7000 rpms)
Torque -
Straight - 36 kg/n (6000 rpms)
KS cat - 37 kg/n (5500 rpms)
Genuine - 33 kg/n (6000 rpms)
Boost -
Straight - 1.0 kg/cm2 (6000 rpms)
KS cat - 1.05 kg/cm2 (5500 rpms)
Genuine - 0.94 kg/cm2 (5000 rpms)
Hello Chuck,
If you need any measurement ( for comparison) to help you construct your cat. Don't hesitate to ask. I also have a few papers which show emission tests from Knightsports. They are in Japanese and will be happy to send a copy to you.
Twokrx7,
For comparison, the KS diameter is 80 mm in/out which is 3.15 inches and round shaped.
Here is a photo of my metalit cat.
//Oliver
#31
_________________________
Originally posted by Mr. Stock
Because I do believe that there has been some advancement in the catalytic converter technology that knightsports uses in their cats.
http://knightsports.co.jp/catalog/im...s/metalit.html
Apparently this is the latest in catalytic converter technology.
http://emitec.com/index.html?lang=en&tab=3&doc=41
Probably more efficient at "removing" environmental pollutants with less back pressure.
My recommendation would be to call Corksport as they can get pretty much anything from Japan.
Because I do believe that there has been some advancement in the catalytic converter technology that knightsports uses in their cats.
http://knightsports.co.jp/catalog/im...s/metalit.html
Apparently this is the latest in catalytic converter technology.
http://emitec.com/index.html?lang=en&tab=3&doc=41
Probably more efficient at "removing" environmental pollutants with less back pressure.
My recommendation would be to call Corksport as they can get pretty much anything from Japan.
Mr. Stock,
I have not see the site from Emitec before. Nice information.
Thanks for posting that,
Oliver
#33
_________________________
Originally posted by 7racer
OC great info!!!
Thanks for the post...and that is a beautiful cat!
OC great info!!!
Thanks for the post...and that is a beautiful cat!
Thanks 7racer
closer photo of the canister
Matalit cat installed
#34
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Does the Metalit cat require an air pump to avoid clogging? I know the need for an air pump on any cat is debatable. However, there seems to be some consensus that the stock cat's life span will be shorted if it is used without an air pump.
I want to note that the air pump on GM f-body cars runs only on cold start and for less than 4 minutes. The C5 vette has a similar setup. The new C6 apparently does not have an airpump at all. I hope that this reduction in the need for air injection is due to advancements in cat technology, that can be used for the FD as well, and not changes to extrinsic parts.
Great thread!
I want to note that the air pump on GM f-body cars runs only on cold start and for less than 4 minutes. The C5 vette has a similar setup. The new C6 apparently does not have an airpump at all. I hope that this reduction in the need for air injection is due to advancements in cat technology, that can be used for the FD as well, and not changes to extrinsic parts.
Great thread!
#35
Need more sleep
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Oliver, I took your dimensions on the cat and roughly figured the large diameter of the cat is about 4-3/8", can you confirm?
I wonder if I can fit two of them under the car in case they do not sell a true 4" id version. Probably overkill but it would really cut down on exhaust noise in addition to flowing like crazy.
I wonder if I can fit two of them under the car in case they do not sell a true 4" id version. Probably overkill but it would really cut down on exhaust noise in addition to flowing like crazy.
#37
Does the test mention what year or what mod's the FD was using? There are 2 KS cats. Pro version and Metalit super pro spec.
I find it very interesting that the figures you list show that the ks cat lifts boost higher than a straight pipe! and has the hp! more torque!
I'd like to see an independant test, but if that's true, it's interesting
#38
_________________________
Originally posted by twokrx7
Oliver, I took your dimensions on the cat and roughly figured the large diameter of the cat is about 4-3/8", can you confirm?
Oliver, I took your dimensions on the cat and roughly figured the large diameter of the cat is about 4-3/8", can you confirm?
I just measured the cat. It is 110mm or 4-1/16" in diameter.
You were damn close!
//Oliver
#39
_________________________
Originally posted by DaiOni
It wasn't a KS test - it was done by r-magic for hyper rev magazine and was performed with their latest project car. Performance mods include (stock turbos), apexi intakes, r-magic v-mount, cat-back, dp, ngk plugs and performance leads, power fc, bigger fuel pump. They claim 370hp (ps) - not sure how that would translate on a US dyno.
I find it very interesting that the figures you list show that the ks cat lifts boost higher than a straight pipe! and has the hp! more torque!
I'd like to see an independant test, but if that's true, it's interesting
It wasn't a KS test - it was done by r-magic for hyper rev magazine and was performed with their latest project car. Performance mods include (stock turbos), apexi intakes, r-magic v-mount, cat-back, dp, ngk plugs and performance leads, power fc, bigger fuel pump. They claim 370hp (ps) - not sure how that would translate on a US dyno.
I find it very interesting that the figures you list show that the ks cat lifts boost higher than a straight pipe! and has the hp! more torque!
I'd like to see an independant test, but if that's true, it's interesting
I found it interesting as well but was never shown a actual test sheet just an email with numbers. The person who gave me the figures is named Ant at Reworx in the UK. www.Reworx.com
He spoke to the sale manager named Takeshi at KS. He may or not be the person who gave Ant the numbers??
Since your in Japan. Maybe you could call them and ask about the HP/Torque numbers?
//Oliver
#43
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Invidia brought this exact technology to showcase at SEMA.
http://www.overboost.com/pix.asp?ima...l/IMG_0461.jpg
"...Invidia has developed a catalytic converter that is so efficient, a three-inch diameter roll of their catalyst is all that's needed to maintain emissions compliance. And a three-inch roll of catalyst can easily be stuffed into a down pipe or exhaust pipe. The advantage is that the exhaust gas doesn't have to expand into a large chamber and then get squeezed back down to pipe-size."
1) RS-R and Invidia have a history (I thought this was interesting)...
http://www.rs-r.com/rsr_statement.htm
2) I don't know if Invidia has incorporated this new technology in their product line or not.
3) I am not making any recommendations on Invidia products. I am only posting the info that I found.
BTW, yes I have met the guys at Invidia and have seen their products up close. I have no comment.
http://www.overboost.com/pix.asp?ima...l/IMG_0461.jpg
"...Invidia has developed a catalytic converter that is so efficient, a three-inch diameter roll of their catalyst is all that's needed to maintain emissions compliance. And a three-inch roll of catalyst can easily be stuffed into a down pipe or exhaust pipe. The advantage is that the exhaust gas doesn't have to expand into a large chamber and then get squeezed back down to pipe-size."
1) RS-R and Invidia have a history (I thought this was interesting)...
http://www.rs-r.com/rsr_statement.htm
2) I don't know if Invidia has incorporated this new technology in their product line or not.
3) I am not making any recommendations on Invidia products. I am only posting the info that I found.
BTW, yes I have met the guys at Invidia and have seen their products up close. I have no comment.
Last edited by DomFD3S; 02-24-04 at 09:08 AM.
#44
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Does anybody have the contact info for a us distributor of the cat brick? I sent emitec an email yesterday asking the same question, but the site is apparently hosted overseas so I think my chance of getting a response is slim.
#45
Tequila? ..it's like beer
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My brother used some very similar, supposedly "ultra clean" cats in the Future Truck project at U of Md. What he showed to me was basically a 2.5" tube packed with this stuff (like the pic) that they welded into the collectors on the truck. I'm pretty sure they picked it up from someone in the NE. I just emailed him for more info but he's out of town this week. I remember a number like $150 or so for that section of cat, but that was 2-3 years ago.
Interesting side story. At the competition someone screwed up the dyno settings for the MD dyno pull & emissions test.. they added another 2000 lbs to the test load. The truck almost overheated (pistons tagged the spark plugs from the rod stretch and it died) but with these cats running, they had the cleanest emissions at the competition (cats were glowing red). When they retested it later with the correct load, emissions were close to the same.
Interesting side story. At the competition someone screwed up the dyno settings for the MD dyno pull & emissions test.. they added another 2000 lbs to the test load. The truck almost overheated (pistons tagged the spark plugs from the rod stretch and it died) but with these cats running, they had the cleanest emissions at the competition (cats were glowing red). When they retested it later with the correct load, emissions were close to the same.
#46
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uhh...davesport all metal cat...uuhh... cool
http://www.davesport.com/cgi-bin/dav...ml?id=5STGKFtY
138 bucks.
granted its not all shinny and polished...but its gonna be UNDER the freakin car...
john
http://www.davesport.com/cgi-bin/dav...ml?id=5STGKFtY
138 bucks.
granted its not all shinny and polished...but its gonna be UNDER the freakin car...
john
#47
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Originally posted by rotaryextreme
Metal Cat is already proven. The cells are bigger than the regular ceramic cat and that's why it flows better. On the dyno, it flows almost like a 3" straight pipe. There are many dyno testing done in Japan.
Good news is that you don't have to pay too much for it at this time because I already have a source to have it done for $500, as cheap as those ceramic cat. Anyone insterested so I can start on this project?
Chuck Huang
Metal Cat is already proven. The cells are bigger than the regular ceramic cat and that's why it flows better. On the dyno, it flows almost like a 3" straight pipe. There are many dyno testing done in Japan.
Good news is that you don't have to pay too much for it at this time because I already have a source to have it done for $500, as cheap as those ceramic cat. Anyone insterested so I can start on this project?
Chuck Huang
on a side note, i was just about to buy a pettit HF for my 20b project car (motor is not mounted yet... im still getting the engine bay ready) but maybe ill hold off and see how this metal cat stuff pans out. the 20b would be a perfect platform to test longevity and how the cat holds up to exhaust pulse, heat, etc since the 20b will undoubtedly give it a harder beating than a 2 rotor
-heath
#49
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Originally posted by OC94Rx7
Thanks for the information.
I found it interesting as well but was never shown a actual test sheet just an email with numbers. The person who gave me the figures is named Ant at Reworx in the UK. www.Reworx.com
He spoke to the sale manager named Takeshi at KS. He may or not be the person who gave Ant the numbers??
Since your in Japan. Maybe you could call them and ask about the HP/Torque numbers?
//Oliver
Thanks for the information.
I found it interesting as well but was never shown a actual test sheet just an email with numbers. The person who gave me the figures is named Ant at Reworx in the UK. www.Reworx.com
He spoke to the sale manager named Takeshi at KS. He may or not be the person who gave Ant the numbers??
Since your in Japan. Maybe you could call them and ask about the HP/Torque numbers?
//Oliver