decat civic type r
Discussion
No it wont pass the MOT unless you have a sympathetic tester.
Your CEL (check engine light) will come on as it will read an error on your upstream oxy sensor. You can avert this by putting spark plug spacers on the oxy sensor to move it away from the direct exhaust flow, or using a KPRO ecu have this shut off. Or you can geta O2 simulator, which bypasses the oxy sensor, but this requires splicing the wires which i won't be doing.....
As for a decat pipe, anything off ebay will do the job, get a nice shiny one for £99.00.
Gwiz
(i know this as i have just done the research my self)
Your CEL (check engine light) will come on as it will read an error on your upstream oxy sensor. You can avert this by putting spark plug spacers on the oxy sensor to move it away from the direct exhaust flow, or using a KPRO ecu have this shut off. Or you can geta O2 simulator, which bypasses the oxy sensor, but this requires splicing the wires which i won't be doing.....
As for a decat pipe, anything off ebay will do the job, get a nice shiny one for £99.00.
Gwiz
(i know this as i have just done the research my self)
The gains are only really going to be noticed if you have a new ECU. (KPRO or K100 seem to be the most used) Otherwise the perfomance benefit will be negelible, maybe 1-2 hp. The decat pipe your thinking of would be something like this ---> de cat pipe
The cel light will be on and essentially the car will run with more automatic choke for longer when starting from cold, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (including manifold) get a new ecu and change the air intake to a Cold air inducting air filter kit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
The cel light will be on and essentially the car will run with more automatic choke for longer when starting from cold, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (including manifold) get a new ecu and change the air intake to a Cold air inducting air filter kit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
Edited by GingerWizard on Thursday 25th March 11:51
Edited by GingerWizard on Thursday 25th March 11:52
GingerWizard said:
The gains are only really going to be noticed if you have a new ECU. (KPRO or K100 seem to be the most used) Otherwise the perfomance benefit will be negelible, maybe 1-2 hp. The decat pipe your thinking of would be something like this ---> de cat pipe
The cel light will be on and essentially the car will run with more automatic choke for longer, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (inclu manifold) get a new ecu and change the air intake to a Cold air inducting air filter keit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
I agree with Ginger ^^The cel light will be on and essentially the car will run with more automatic choke for longer, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (inclu manifold) get a new ecu and change the air intake to a Cold air inducting air filter keit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
If you're going to do it, do it properly. And properly means expensive. I spent a fortune to get nearly 70bhp without going FI or doing internals.
hondafanatic said:
GingerWizard said:
The gains are only really going to be noticed if you have a new ECU. (KPRO or K100 seem to be the most used) Otherwise the perfomance benefit will be negelible, maybe 1-2 hp. The decat pipe your thinking of would be something like this ---> de cat pipe
The cel light will be on and essentially the car will run with more automatic choke for longer, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (inclu manifold) get a new ecu and change the air intake to a Cold air inducting air filter keit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
I agree with Ginger ^^The cel light will be on and essentially the car will run with more automatic choke for longer, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (inclu manifold) get a new ecu and change the air intake to a Cold air inducting air filter keit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
If you're going to do it, do it properly. And properly means expensive. I spent a fortune to get nearly 70bhp without going FI or doing internals.
Edited by GingerWizard on Thursday 25th March 11:56
GingerWizard said:
hondafanatic said:
GingerWizard said:
The gains are only really going to be noticed if you have a new ECU. (KPRO or K100 seem to be the most used) Otherwise the perfomance benefit will be negelible, maybe 1-2 hp. The decat pipe your thinking of would be something like this ---> de cat pipe
The cel light will be on and essentially the car will run with more automatic choke for longer, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (inclu manifold) get a new ecu and change the air intake to a Cold air inducting air filter keit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
I agree with Ginger ^^The cel light will be on and essentially the car will run with more automatic choke for longer, once its warm though no difference will be noticed. It just makes the car lose 1-2 mpg....
it will make the car runn a bit more noisy, but if you are already modifying the exhaust then i doubt again you will notice. Realistically there is no point taking the cat off unless your going to change the full exhaust (inclu manifold) get a new ecu and change the air intake to a Cold air inducting air filter keit like an AEM or a Gruppe M. It would be very easy to spend 2k and only really see a 50hp improvement.... it ain't cheap running a NA engine!
If you're going to do it, do it properly. And properly means expensive. I spent a fortune to get nearly 70bhp without going FI or doing internals.
Edited by GingerWizard on Thursday 25th March 11:56
I’ve driven a few that were pushing over 350bhp and they are very quick, but they didn’t have maybe the best intake/exhaust etc. Therefore they were cheaper, even though it was more expensive upfront as I upgraded a bit at a time and always had it dyno'd after a mod to measure against the original benchmark dyno I did.
My problem is that I like to do it right. So I spent a lot on suspension and brakes first. Then did the engine stuff and transmission. To be honest, a rotrex would have been a simple bolt-on job, but then I’d have wanted to sort out the valve springs etc etc and it was just getting silly in terms of costs.
GingerWizard said:
go on then i'm interested, give me a final stats sheet and rough cost.... I take it you have sold up now...
Nope... it would make me weep. And yes, stripped off most of the stuff, returned it to standard and traded it against a new CRV. Diesel. I know. Don't ask.
That has since be turned into an FD2 though.
sammyglass2 said:
ahh ok.. i see what you mean. how much is this new ecu you speak of? to be honest i am not really planning on going to that extreme. so your opinion it would be pointless taking off the cat atall?? appreciate the tips
The KPRO is about £750.00 you should be able to find one that will be "mapped" with something like a cold air intake and 1/2 a performance exhaust such as manifold back---> for about £500. And its just a plug and play peice of kit. If you buy new then its £750+ plus a rolling road session with engine map at TDI north (other places are available but TDI have v.good rep) So all in its a grand.....you can mess about with rev limitation and VTEC engagement point etc etc so could go for a 8800rpm with VTEC engaging at 5500rpm...
sammyglass2 said:
so your opinion it would be pointless taking off the cat atall?? appreciate the tips
No it's not worth it, the OEM manifold is still too restrictive. Have a look at the Piper manifold with sports cat http://civictype-r.co.uk/forum/viewtopic.php?f=29&... it made great gains at CPL and their dyno is pretty conservative and the manifold is well priced. You will need mappable ECU as already suggested to make good gains, Hondata K100 might be better if you don't intend to mess with the maps yourself. Choose KPro if you want more control/datalogging and the ability to run free maps off the internet though.My Toda manifold and KPro with free internetz map gained me approx 40bhp midrange with VTEC between 3500rpm to 8600rpm (under WOT). With GruppeM, Spoon N1 I had 195bhp at the wheels, 237 flywheel.
I'll just buy a gay turbo next time I think, tuning NA is pricey. I've since sold my Kpro and manifold
Edited by itsnotarace on Friday 26th March 17:37
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