High flow precat gains?
#81
#82
So far that what I notice . I haven't have time to get on the highway and go more then 4k rpm. I know I have more then that because of my setup 3.7 intake manifold and tb 4 "intake atlp jpipe test pipe and cat back.
#84
I drive the car every day from home to the naval base and all is city drive. That why notice power in that rpm range. It take less effort to build up speed I don't have to push the gas pedal too far before am doing 45-50 at 3k rpm.
#86
O men you was right I got on the highway today. This car is so fast now. And when vtec turn on it pull so hard. I am glad I did this set up.
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EvilVirus (08-11-2013)
#94
Officially, changing any cats at all on any car (regardless of if it's high flow or not) is illegal in all 50 states. It's a federal offense to tamper with catalytic converters. From what I saw about your county though it looks like they just do diagnostic tests? Meaning if your car isn't throwing CEL's it should be fine.
Unlike California where we have tailpipe sniffer test and a visual inspection also . When I did it last month the tech says I have no emissions (I just had 3rd cat off with rv6 v3 jpipe) but "what's that shiny part where the converter should be?"
It's definitely a hassle.
Unlike California where we have tailpipe sniffer test and a visual inspection also . When I did it last month the tech says I have no emissions (I just had 3rd cat off with rv6 v3 jpipe) but "what's that shiny part where the converter should be?"
It's definitely a hassle.
Now, if you care a little about the environment you may run high flow cats to help a little.
I am going to run a j-pipe with high flow cats(although I have a type S M/T, I hope their is some substantial gain) and get a tune with hondata flashpro to have the mods working at at an optimum level.
To say you can't run no cats is ridiculous, you in California have the strictest emissions laws in the U.S. If you are on the East coast , run that test pipe!
#96
Nobody looked under the car for 7 years except my friend that is a mechanic and the honda dealer. Nobody cared.
I don't think anybody cares , except in states that they have inspection is all I am saying. And, High flow cats still protect the environment a little bit
#97
Yeah I'm not implying that you're likely to get into trouble doing so. Just saying that it's illegal regardless of whether your state/county has inspections or not. It's only a matter of time before inspections are federally mandated in all states.
#100
There will be some gains, they will just be negligible. To quantify it a bit for you, base cats have 900 cells, type-s has 600 cells, HFPC are either 300 or 200 cells, and PCDs are 0 cells aka straight pipes. Less cells = more flow = freeing up more power.
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Acura2615 (02-16-2020),
StealthTL-S (08-15-2013)
#102
you will notice gains (not negligible) going from type s to hfpcs...with or without hondata. your exhaust note will get louder as well just as a heads up if you have an aftermarket catback
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StealthTL-S (08-15-2013)
#103
http://www.epa.gov/otaq/cert/factshts/catcvrts.pdf
LOL, wut?
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Acura2615 (02-16-2020)
#105
It's a violation, not a felony, although they reserve the right to slap a hefty fine on you.
http://www.epa.gov/otaq/cert/factshts/catcvrts.pdf
LOL, wut?
http://www.epa.gov/otaq/cert/factshts/catcvrts.pdf
LOL, wut?
#107
#108
#110
^^
Richie uses the Magnaflow 59956 and there's a lot of conflicting info as to whether they're 200 or 300 cell. Magnaflow doesn't specify on their site, but do some digging and you'll see the opposing views. I know Berk was using the 59956 on their Nissan/Infiniti cats for awhile and they were advertising them as 300 cell.
Richie uses the Magnaflow 59956 and there's a lot of conflicting info as to whether they're 200 or 300 cell. Magnaflow doesn't specify on their site, but do some digging and you'll see the opposing views. I know Berk was using the 59956 on their Nissan/Infiniti cats for awhile and they were advertising them as 300 cell.
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FamilyGuy (07-21-2015)
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