# Will an SR pass with a generic high flow cat?
**URL:** https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569
**Category:** SON240sx Automotive
**Created:** [April 14, 2009, 8:03pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569 "2009-04-14T20:03:19Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@Conte6](https://forums.speedlife.net/u/Conte6)
#### Post date: [April 14, 2009, 8:03pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/1 "2009-04-14T20:03:19Z")
Like the title states, if I run the emission test under HOTROD status, and I have a high flow cat (no name), do you think it will pass? Somewhat of a noob and im looking for experienced opinions here.
To be noted:
1. 3 inch turbo back exhaust (obv with cat)
2. FMIC
Thanks in advance
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### Author:  [@minimum](https://forums.speedlife.net/u/minimum)
#### Post date: [April 14, 2009, 8:25pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/2 "2009-04-14T20:25:07Z")
my sr has passed 3 e-tests under hotrod status. one of the most important things would be your bov. what type are you running and is it vented to atmosphere? I always recirculate my bov for e-tests and it passes no problem.
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### Author:  [@Conte6](https://forums.speedlife.net/u/Conte6)
#### Post date: [April 14, 2009, 8:32pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/3 "2009-04-14T20:32:02Z")
It’s vented to atmosphere…do you think it will play a big part in not passing? And do you think not having the a regualr cat will hurt my chances?
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### Author:  [@minimum](https://forums.speedlife.net/u/minimum)
#### Post date: [April 14, 2009, 9:03pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/4 "2009-04-14T21:03:37Z")
ive got a 3" exhaust with 3" high flow cat too… the only time i didn’t recirculate it failed. im running greddy type s bov.
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### Author:  [@polishprince](https://forums.speedlife.net/u/polishprince)
#### Post date: [April 14, 2009, 9:13pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/5 "2009-04-14T21:13:58Z")
mine passed then i checked and as it turns out my cat was hollowed out… solid
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### Author:  [@pearlS13](https://forums.speedlife.net/u/pearlS13)
#### Post date: [April 14, 2009, 9:26pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/6 "2009-04-14T21:26:01Z")
I passed my etest with a 3in turbo back exhaust, generic high flow cat, none recirc greddy rs bov
I was doing the test under regular 240sx specs aswell which are much stricter than hot rod status and I passed with flying colours!
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### Author:  [@rex\_thugs](https://forums.speedlife.net/u/rex_thugs)
#### Post date: [April 14, 2009, 10:16pm UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/7 "2009-04-14T22:16:17Z")
if ur not able to recirculate ur blow off valve lets say u have a blitz and dont want to wait to get a fitting, i think adjusting the blow valve more to the hard side should help. aslong as ur sr is running like really good and u have a good cat and o2 sensor u should pass in hotrod mode easily.
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### Author:  [@JDMG](https://forums.speedlife.net/u/JDMG)
#### Post date: [April 15, 2009, 8:21am UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/8 "2009-04-15T08:21:48Z")
my sr passed yesterday with a 3" exhaust, hi flow cat and an hks bov vented to atmosphere. no problems. They tested it as a grey market vehicle, idunno if thats the same as the hot rod status.
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### Author:  [@DoneDreamin](https://forums.speedlife.net/u/DoneDreamin)
#### Post date: [April 15, 2009, 8:31am UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/9 "2009-04-15T08:31:57Z")
I tested mine under hotrod yesterday too, only difference is i’m running a recirc. Passed
I can guarantee your CO% on idle will be higher with a atmospheric as i tested the same motor with a greddy type RS and my reading at idle was 1.52 , running a recirc and it ran .50
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### Author:  [@Lucas180](https://forums.speedlife.net/u/Lucas180)
#### Post date: [April 15, 2009, 8:55am UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/10 "2009-04-15T08:55:10Z")
My car passed with no cat under the hot rod e test lol
just a test pipe
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### Author:  [@s13Junkyard](https://forums.speedlife.net/u/s13Junkyard)
#### Post date: [April 15, 2009, 10:03am UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/11 "2009-04-15T10:03:17Z")
my car passed with a 3:" highflow under normal 240sx test
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### Author:  [@slipperysilvia](https://forums.speedlife.net/u/slipperysilvia)
#### Post date: [April 15, 2009, 10:49am UTC](https://forums.speedlife.net/t/will-an-sr-pass-with-a-generic-high-flow-cat/123569/12 "2009-04-15T10:49:47Z")
yea , 90% of ppl pass with sr’s more easily then with KA’s from my experience.
Most of them, hi flow cats, just tested under normal 240sx 2.4l motor. No hotrod, nothing.
retarding the timing helps a lot also.