De-Cat questions for S2 Elise 111s
De-Cat questions for S2 Elise 111s
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D4V KC

Original Poster:

644 posts

270 months

Friday 3rd February 2006
quotequote all
Hi, can the PH massive assist me please.

I understand that on the S2 there is a screw in sensor on the cat part of the exhaust.

If I put a de-cat pipe in does the sensor need to be fitted? I suspect it does or exhaust gas would come out of the hole.

Do the sensors break when you unscrew them? Are they fragile? Are they expensive to replace?

As i understand it, this is could be the Lambda sensor but eliseparts.com say that this is located in the the exhasut manifold? Not the catalyst section?

I also see there's a simple wire/resistor thing (ML light eliminator) that tricks the sensor to believe that the cat is still there? Which is also sold by eliseparts.com. How easy is this to fit? Is it 100% required to turn off the error light on your dashboard?

I'm no mechanic or electrian, but i did fit the sport zaust on my Series 1 111s Elise myself and the de-cat. Sounded fantastic, especially on the over run and popping. I'm just concerned that it appears the S2 one's more complicated? My S2 has the Janspeed Sports Silencer on it and standard cat currently. And i don't really want to shell out the cash for a sports cat.
Just want a little more growl and popping! I know i'll have to put the cat back for the MOT though.

Regards, D4V KC

stuart1969

335 posts

308 months

Friday 3rd February 2006
quotequote all
Firstly you will need something in the hole to prevent gas escape.

Secondly, I had no problem when unscrewing the sensor, just be carefull how you twist the wire or locate the connector and disconnect to remove & replace.

Thirdly, I have a MIL elliminator and never bothered to fit it, but it is very simple.

Finally, as i managed to stack my S2 111S in December with the race cat fitted, i still have my cat bypass pipe lying round the garage amd MIL elliminator. If you want them let me know (its not the official one, i merely cut my CAT out and welded a new section in place.

P.S. if anyone reading this needs the actual CAT element or a standard exhaust for an S2 111S please let me know.

Stuart

D4V KC

Original Poster:

644 posts

270 months

Friday 3rd February 2006
quotequote all
stuart1969 said:
Firstly you will need something in the hole to prevent gas escape.

Secondly, I had no problem when unscrewing the sensor, just be carefull how you twist the wire or locate the connector and disconnect to remove & replace.

Thirdly, I have a MIL elliminator and never bothered to fit it, but it is very simple.

Finally, as i managed to stack my S2 111S in December with the race cat fitted, i still have my cat bypass pipe lying round the garage amd MIL elliminator. If you want them let me know (its not the official one, i merely cut my CAT out and welded a new section in place.

P.S. if anyone reading this needs the actual CAT element or a standard exhaust for an S2 111S please let me know.

Stuart


Hi Stuart, sorry to hear you've not got the Elise anymore.
Thanks for the advise
What do you want for the ML elliminator and de-cat?

>> Edited by D4V KC on Friday 3rd February 11:08

stuart1969

335 posts

308 months

Friday 3rd February 2006
quotequote all
Oh, no reason to be sad, my Exige Cup 240 is in the post!!!!

Just give me an address and i will pop them in the post for you.

stuart.dalrymple@devol.com

D4V KC

Original Poster:

644 posts

270 months

Friday 3rd February 2006
quotequote all
stuart1969 said:
Oh, no reason to be sad, my Exige Cup 240 is in the post!!!!

Just give me an address and i will pop them in the post for you.

stuart.dalrymple@devol.com


Fantastic, you're an absolute star thanks! YHM
D4V KC

enjybenjy

928 posts

284 months

Friday 3rd February 2006
quotequote all
stu
what happened to your race cat?

stuart1969

335 posts

308 months

Friday 3rd February 2006
quotequote all
I was on the car when it was totalled unfortunately.

Adman250

3 posts

250 months

Friday 3rd February 2006
quotequote all
have you not seen the pics enjy its horrible. Stuart let us know when you know when your cup 240 arrives.

stuart1969

335 posts

308 months

Saturday 4th February 2006
quotequote all
Normal service will be resumed shortly

enjybenjy

928 posts

284 months

Saturday 4th February 2006
quotequote all
nasty mate. did you hurt yourself

stuart1969

335 posts

308 months

Saturday 4th February 2006
quotequote all
Actually not at all, 10 out of 10 for structural integrity to the boys at Hethel. bigest problem was the fact that all the Xmas presents ended up on the outside lane of the motorway, and stupidly I managed to rescue them all. You should have seen the face of the woman in the store when I presented them for re-wraping.
Knowing what speed it went into the armco at and looking at how it coped I would not like to have been in a traditional car, i think it would actually have been worse.
We live to fight another day!!!













D4V KC

Original Poster:

644 posts

270 months

Monday 13th March 2006
quotequote all
D4V KC said:
stuart1969 said:
Oh, no reason to be sad, my Exige Cup 240 is in the post!!!!

Just give me an address and i will pop them in the post for you.

stuart.dalrymple@devol.com


Fantastic, you're an absolute star thanks! YHM
D4V KC


Well, the boy did good, and I recieved the de-cat and ML shortly after the post in Feb.

So why did I take so long to fit it?

I needed a bigger wrench and hammer!!!!! It's all done. Had the Janspeed sports zaust already and now have the decat and ml eliminator to stop the error light coming on in my dashboard to say there's no catalyst.

The noise is fantastic. Sounds like a proper race car, it's a bit boomie around 2K-2.5K revs and like a thing possessed above 6000! It's certainly destinctive! And i'll be putting the catr back in in August for the MOT.

I only do 5500-6500 miles a year and as little motorway stuff as I can help, as the country roads are more fun. But, I will be going up to Donnington for the Lotus show this Saturday, so it'll be interesting to see what 2 hours of my new noise sounds like on the way up (and back!).

Thanks once again to Stuart, very much appreciated. I'm very pleased. (As you may have gathered.....)

Regards

David Casey, D4V KC - Elise S2 111s

TonyHetherington

32,091 posts

281 months

Monday 13th March 2006
quotequote all
Top top work, dear boy

It's a great sound, isn't it ?

I suggest getting someone to drive your car past you; it's unbelievable how different it sounds (and how loud) compared to what you think it will be!!

enjybenjy

928 posts

284 months

Monday 13th March 2006
quotequote all
Miles is fitting my sports cat tomorrow, can't wait to hear the difference

D4V KC

Original Poster:

644 posts

270 months

Monday 13th March 2006
quotequote all
Forgot to mention, i already had the K&N57i induction kit too. It's all a bit sporty sounding

stuart1969

335 posts

308 months

Wednesday 15th March 2006
quotequote all
Glad to see it has gone to a good home. All the best mate!!

Stuart

cuzza

2,042 posts

284 months

Thursday 16th March 2006
quotequote all
Doesn't the 111S actually lose power if you remove the cat?

shangani

3,069 posts

268 months

Thursday 16th March 2006
quotequote all
Yes it does - ~3bhp.

cuzza

2,042 posts

284 months

Thursday 16th March 2006
quotequote all
shangani said:
Yes it does - ~3bhp.


Good idea then

enjybenjy

928 posts

284 months

Thursday 16th March 2006
quotequote all
I'm not so sure about this. I don't have a Decat pipe, but recently had a janspeed sports cat fitted. It revs so much easily and genuinely feels quicker. It's certainly no worse IMO. Maybe there's still enough back pressure with this for the VVC, there's none with a CRP.