Kooks longtubes are off road only. See here, clearly states: WARNING: This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes.IIRC, Kooks long tubes w/kooks green cats are CARB compliant
Then what is the real purpose behind the Kooks Green Catted H-pipe being EPA 49 state certified and able to pass OBDII emissions requirements if it's not legal for street use? Doesn't make any friggin sense.. So why even bother spending 2x the amount on Green Cats over non EPA hi-flow cats, if they're only to be used for off-road purposes? Once again, doesn't make any damn sense lol.Kooks longtubes are off road only. See here, clearly states: WARNING: This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes.
LTH https://kooksheaders.com/headers/long-tube/1-34-x-3-ss-headers-2011-2014-mustang-gt-50l
Green Cats: https://kooksheaders.com/exhaust/cr...-green-catted-h-pipe-2011-2014-mustang-gt-50l
Is there any high-flo catted mid pipe on the market that connect to the stock manifolds that aren’t magnaflows?
Pypes Performance Exhaust, Bassani Exhaust and SLP performance also offer hi-flo catted mid-pipes that connect to the stock manifolds. JBA performance exhaust also has them for all 2011-current models.
You aint kidding on the price. I would have a set on there with green cats if it was certified. And I like the design of the Kooks headers with the equal runners.
I guess the only point I see is if an inspector and/or cop looks under the car, you have cats. And if the OBD 2 monitors complete there is a much better chance to pass smog as opposed to "incomplete or N/A monitors". Till the shop checks for OBD certs.
So sad.
are those after x / h pipes that keep
Your factory cats or am I wrong?
They're all complete hi-flow catted mid pipe crossovers that include hi-flow cats.
Well I didn't know if you had an 11-14 or 05-10.. Meanwhile, I'll post some links shortly!my Google fu is week @06 T-RED S/C GT . Got a part number or links... I can’t find any 11-14 catted high flow pipes that run in the stock manifold. Only ones which require headers as well. Thanks
Much appreciated. Love it... got a 2013 GT.Well I didn't know if you had an 11-14 or 05-10.. Meanwhile, I'll post some links shortly!
I thought Kooks Green Cats were certified under GESI? But if not, then I suppose the only way to get around it legally, is by swapping back and forth between the OEM stock catted mid-pipe and your Kooks long tube headers, which no doubt will be a major PITA, but it is what it is
Much appreciated. Love it... got a 2013 GT.
In my area, law enforcement frequently has on-side smog inspection.
I take it that your located in California?
So is there much difference between a 200cell cat and off road (cat less)? I think oem is 400cell car(?) Are they’re gains to be had or leave it stock if you cannot legally have catless?
I thought so.Yeah.
Major difference between hi-flow cats over stock cats, is sound. Other than that, there's very little to be gained as far as HP/TQ are concerned. As for a 200cell cat vs off-road goes? Once again, there's very little to be gained performance wise.
First off, it was you who brought up the legality concern in your previous post. Therefore, if you've already seen Coyote engines net 10rwhp by going catless? then why even bother going thru the additional expense and hassle of adding hi-flow cats, if legality isn't a concern? just go catless/off-road and be done with it. And second, I didn't post a fucking word about there being no difference between 400 cell vs 200 cell vs off-road, I clearly stated there was very little difference between a 200 cell hi-flow cat vs off-road/catless regarding any substantial performance gains. Also for the record, I never mentioned anything regarding net horsepower claims. All I said was other than for just sound, there is very little performance gains to be had between stock and hi-flow cats. The bottom line is this, you submitted several posts in this thread searching for feedback addressing your questions/concerns and were provided with feedback addressing your questions 4 consecutive times. That being said, if the feedback provided isn't acceptable enough in meeting your standards or to your liking? then don't bother wasting any of the forum members time on this site, to begin with!let’s take out the legal vs illegal argument. Where are you getting your net horsepower claim? I’ve seen coyote engine net 10rwhp with my own 2 eyes off going catless. So what your saying is there’s no difference between 400 vs 200 cell vs off road pipe? I want to make sure I am understanding.
First off, it was you who brought up the legality concern in your previous post. Therefore, if you've already seen Coyote engines net 10rwhp by going catless? then why even bother going thru the additional expense and hassle of adding hi-flow cats, if legality isn't a concern? just go catless/off-road and be done with it. And second, I didn't post a fucking word about there being no difference between 400 cell vs 200 cell vs off-road, I clearly stated there was very little difference between a 200 cell hi-flow cat vs off-road/catless regarding any substantial performance gains. Also for the record, I never mentioned anything regarding net horsepower claims. The bottom line is this, you submitted several posts in this thread searching for feedback addressing your questions/concerns and were provided with feedback addressing your questions 4 consecutive times. That being said, if the feedback provided isn't acceptable enough in meeting your standards or to your liking? then don't bother wasting any of the forum members time on this site, to begin with!