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 A little lumpy idle only just passed emissions?
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elviscat
Level 6 User

Joined: 04 Nov 2004
Posts: 134

Posted: Tue May 10, 2005 7:28 am

lo peeps,

Just thought i'd ask any opinions, since i put the cat back on for MOT, idle seems to be noticably lumpy, and i can;t remember it being like that before when the de-cat was on, she also only just made the emissions at MOT, i.e. it took a while to come down to 1.025 and the limit was 1.03, the CO2 was fine, but he said she was running a little rich. and that was why it only made it.

Could this explain the lumpy idle or is this only the fact that the cat is back on.

Or is this cause is has the willy under the bonnet? when it should be a 1.8?

R19 with Willy 2L, 2L ECU, Scorp pipe, BMC induction, (and will have decat back on in a couple of days)
??
jimbo
Level 7 User

Joined: 27 Feb 2004
Posts: 243

Posted: Tue May 10, 2005 9:22 am

wen i ran my engine with willy ECU it ran like sack of crap. overfueld big time. proper chipped ECU sorted it out

jimbo
elviscat
Level 6 User

Joined: 04 Nov 2004
Posts: 134

Posted: Tue May 10, 2005 10:00 am

hey jimbo,

This is totally a willy engine, so is it not better to match the engine with the correct ECU, and do you think i should chip the 2L ECU?
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Tue May 10, 2005 10:06 am

that cats fecked matey, simple answer.
elviscat
Level 6 User

Joined: 04 Nov 2004
Posts: 134

Posted: Tue May 10, 2005 11:08 am

eh...what you saying chris?
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Tue May 10, 2005 11:22 am

the one you stuck back on, its not working properly and its partially blocked.

A working cat should reduce the co to 0.0.
elviscat
Level 6 User

Joined: 04 Nov 2004
Posts: 134

Posted: Tue May 10, 2005 11:30 am

CO is 0.01% @ 2880 rpm and 0% @ 0910 rpm

m8, it aint that!!
elviscat
Level 6 User

Joined: 04 Nov 2004
Posts: 134

Posted: Tue May 10, 2005 1:06 pm

any other ideas?
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Wed May 11, 2005 12:07 am

so I assume you gave us the lambda readings then?

It could be anything but if it only happened when you fitted the cat then I'd say air leak at the cats flange, this will cause dodgy emmision readings and it will upset the car a tad.
elviscat
Level 6 User

Joined: 04 Nov 2004
Posts: 134

Posted: Thu May 12, 2005 4:27 pm

no those are the readings from the mot emmisions for CO, but I have replaced the decat and she's as good as gold now.
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Fri May 13, 2005 12:42 am

I meant the 1st readings you gave!

these un's

it took a while to come down to 1.025 and the limit was 1.03

anyway as long as its sorted.
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