Removing cats
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
Removing cats
I saw there were a few thread on this topic already but there was no real concensus on which or both to remove.
I am defiently getting rid of the stock resonator.
I also want to ditch the cats and put angle block spacers or spark plug antifoulers before the secondary o2 sensors. I am fairly sure my cats are clogged as (60k on the car) as after a nice pull there is a smell coming from the exhaust.
Has anyone removed cats? Which ones?
Primaries?
Secondaries?
Both?
I am defiently getting rid of the stock resonator.
I also want to ditch the cats and put angle block spacers or spark plug antifoulers before the secondary o2 sensors. I am fairly sure my cats are clogged as (60k on the car) as after a nice pull there is a smell coming from the exhaust.
Has anyone removed cats? Which ones?
Primaries?
Secondaries?
Both?
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2015 S212
VRP replaced my resonator with an X pipe and put in straight pipes for the secondary cats (which have no sensors). Maybe Vadim will chime in on any plans to sell the setup.
I thought a nice smell on richness was a sign that the cats were working? I dunno about this stuff......
I thought a nice smell on richness was a sign that the cats were working? I dunno about this stuff......
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
doesnt smell like richness. smell like rotten eggs - which is a sign of clogged cats.
thanks for the input jangy. so no check engine light with removing secondaries
thanks for the input jangy. so no check engine light with removing secondaries
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
sounds good. thanks.
i will start with them and if that doesnt work i'll cut the primaries out as well and run an angle block before the o2 sensor and it should be fine. people used to do it on the mkv GTIs and those things threw check engine lights with 100 and 200 cell cats.......and the angle blocks went CEL free with test pipes
i will start with them and if that doesnt work i'll cut the primaries out as well and run an angle block before the o2 sensor and it should be fine. people used to do it on the mkv GTIs and those things threw check engine lights with 100 and 200 cell cats.......and the angle blocks went CEL free with test pipes
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VRP replaced my resonator with an X pipe and put in straight pipes for the secondary cats (which have no sensors). Maybe Vadim will chime in on any plans to sell the setup.
I thought a nice smell on richness was a sign that the cats were working? I dunno about this stuff......
I thought a nice smell on richness was a sign that the cats were working? I dunno about this stuff......
And more importantly, did you notice any gains?
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Out Of Control!!
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From: San Diego
2015 S212
Haha!! Actually, not sure yet. It had leaks and stuff when i saw it. It should be clean and ready to dyno today. I am hoping for any top end gains. My dig is huge, so I really want a way to get to 150 pulling strong.
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2015 S212
Also, I think my VRP/Powerchip tune has the O2 sensors turned off, so I get no CELs from that anyways. That is just what I think my datalogger was telling me. I dunno. Either way, no cels at all and you would not. There are no sensors near any of the work I've had. I left the primary cat and o2 sensors alone. All else is changed, except the mufflers.
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bone stock E55 AMG
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
got the resonator and the secondary cats removed over the weekend. cost me 180$ for parts and labor. car sounds sweet,just a bit louder when cruising but when going wide open throttle it rumbles
definetly happy with the outcome and the cost, highly recommend this.
as far as power goes, its hard to tell small gains on a car thats almost 500hp. hehe. plus my stock heat exchanger pump is on its way out. johnson cm30 should be here today or tommorrow so i will go to englishtown to see how much better i can do than 12.7@109.
definetly happy with the outcome and the cost, highly recommend this.
as far as power goes, its hard to tell small gains on a car thats almost 500hp. hehe. plus my stock heat exchanger pump is on its way out. johnson cm30 should be here today or tommorrow so i will go to englishtown to see how much better i can do than 12.7@109.
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got the resonator and the secondary cats removed over the weekend. cost me 180$ for parts and labor. car sounds sweet,just a bit louder when cruising but when going wide open throttle it rumbles
definetly happy with the outcome and the cost, highly recommend this.
as far as power goes, its hard to tell small gains on a car thats almost 500hp. hehe. plus my stock heat exchanger pump is on its way out. johnson cm30 should be here today or tommorrow so i will go to englishtown to see how much better i can do than 12.7@109.
definetly happy with the outcome and the cost, highly recommend this.
as far as power goes, its hard to tell small gains on a car thats almost 500hp. hehe. plus my stock heat exchanger pump is on its way out. johnson cm30 should be here today or tommorrow so i will go to englishtown to see how much better i can do than 12.7@109.
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CLS55 2006, CLS 63S 2015
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
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Your worst nightmare...
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
yeah you should be able to trick your sensors with the angle block things i posted pictures of or maybe the old spark plug anti fouler trick. they run about 70 a pair shipped for the angle blocks. guy has them machined for this purpose and i haven't heard of them not working. i believe my emission is due in February so after i pass, i will take my primaries out (just in case the angle block doesnt work i'll have a year to figure out what to do)
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Your worst nightmare...
yeah you should be able to trick your sensors with the angle block things i posted pictures of or maybe the old spark plug anti fouler trick. they run about 70 a pair shipped for the angle blocks. guy has them machined for this purpose and i haven't heard of them not working. i believe my emission is due in February so after i pass, i will take my primaries out (just in case the angle block doesnt work i'll have a year to figure out what to do)
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2006 E55 AMG
Okay, you guys are definitely speaking a foreign language to me so I apologize. But, this forum is for asking questions, right? I've been reading most threads for a couple months now to learn as much as I can. Anyway, the one post I came across on this thread reference the smell of rotten eggs. After running hard and parking in my garage, I've noticed this smell. Does this indicate any problems I should be aware of?
Thanks.
Thanks.
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From: San Diego
E55
Okay, you guys are definitely speaking a foreign language to me so I apologize. But, this forum is for asking questions, right? I've been reading most threads for a couple months now to learn as much as I can. Anyway, the one post I came across on this thread reference the smell of rotten eggs. After running hard and parking in my garage, I've noticed this smell. Does this indicate any problems I should be aware of?
Thanks.
Thanks.
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
replacing cats with OEM units is outrageously expensive, so aftermarket or catless is theway to go
