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Messages - laney101

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16
Omega General Help / Re: Catalytic convertor v6
« on: 29 June 2020, 09:40:43 »
Cheers for replys guys

Yes 3.0 pipes had a boss welded in to run 2lambdas. So one before and one after the single cat

Why would i not put back on ?? Simple dont want engine light on dash all time its annoying and certain garages wont pass mot with light on jist easier not having it on at all.. which it isnt now usong original 3.2 downpipes.

However as you say light gone out due to moving post precat sensor so pote tially precars are nackered l.

Ive never had joy woth aftermarket cats on omegas however mever boight good type approved ones so pptentially buyomg good exspeanove ones would be good odea.

Tempted to refit 3.0 ones for now see if performance improves again if does its cats.. and hunt down a good set of brand new type approved cats..

Orrr if performance is restored with 3.0 cats fit a lambda spscer post cat sensor see if light goes out haha.

My 3.2 mainly does 2mile journey to work and back 5 days a week ... and beyond that it mostly town drivivng so fair bit of idling and light driving .. although every avalable chance it does get a good blast always has done but yes once caned may be idling for while at lights etc haha..

Hmm cheers again for help guys

17
Omega General Help / Re: Best coil springs for a 2.6 Saloon
« on: 26 June 2020, 14:00:44 »
Best springs are MV6 ones... if you find low millage set grt them.. sits perfect and handles well..

I had eibach on mine and found didnt handle as well as with mv6 springs and front was to low for my liking.

Or grt in contact with sheffield coil spring and have a set manufactured to oem mv6 set brand new

18
Omega General Help / Re: Catalytic convertor v6
« on: 26 June 2020, 13:59:01 »
No performance issues before removing 3.2 cats (gm ones)

No i never reponsitioned sensors befote removing

Was the usual code for pre cat issue on v6 cant remeber numbernot been on for ages.  Checked via forum to know what ot was.

Installed none genuine cats  lights were still on so after a while decided to refit original cats bit i moved second sensor post main cat and upon refitting now have no eml for past 1000 miles or so :)

But while original cat were removed they were knocked about abot in garage and dont know if maybe insides dislodged or blocked

19
Omega Electrical and Audio Help / Tech 2 diagnostic
« on: 26 June 2020, 12:35:56 »
Anyone got tech 2 in northwest area. After omrga been fully checked over including multiram and tcm communication

20
Omega General Help / Re: Catalytic convertor v6
« on: 26 June 2020, 12:34:45 »
I know bud as said thoigh i timed it and its bang on.. however i shall investigate once again to double check.. but  as said power lacking only since fitted original gm cars again.

The pattern 3.0 ones i did have on that still threw up Eml light couldnt tell you ... just 3.0 cats haha... know they were aftermarket as nothing wrote on them or no in built heatshields

21
Omega General Help / Re: Catalytic convertor v6
« on: 26 June 2020, 11:31:43 »
Its nothing to do with cambelt...

It been since fitting the original downpipes its felt down on power...

Hence asking about the smell froming from cats and weather people have had this and sign cats are nackere

22
Omega General Help / Re: Catalytic convertor v6
« on: 25 June 2020, 13:03:41 »
I did 5k ago.. was fine after belt change timing spot on used locking kit

23
Omega General Help / Re: Catalytic convertor v6
« on: 25 June 2020, 12:11:51 »
All shell v power petril station at top of road :)

If away from home always superunleaded wherever its from

Never had 95 octane in it


What fuel do you normally use?

24
Omega General Help / Re: Catalytic convertor v6
« on: 25 June 2020, 12:11:03 »

No light is on please read my original post. EML was on for years probobly 6 or more always same code for the pre cat iasue the 3.2 has.

So eventually swapped to 3.0 cats (pattern ones ) stil had light on..

Went back to the original 3.2 oem vauxhall cats but moved sensor post main cat and since that never had eml on so thats fine and working.

What ivr got is it feel little bit lacking in power since they gone back on and when yoy do any spirited driving under car is stonking hot and you ca smell something.

When i have had this on previous other cars or friends have had it normally point to cats are clogged or on way out and not performing correctly.. thays what i was asking has anyone had this issue


Please confirm that it's the EML light and not the spanner light that's coming on. Are there any fault codes? You could try the pedal trick if you have no code reader? The lambda sensors themselves also wear out and get choked.

I'd be looking to find out what's triggering the EML before I started replacing expensive cats and sensors. For a start which side is it?

Check the date of 1st registration. If it's the 1st March 2001 or later then strictly speaking it's illegal to sell for, fit to or use a cat on the car that's not R103 type approved.

That said, type approved cats should be better quality than the non approved versions. They should have more platinum, iridium, palladium. The cat is supposed to be manufactured such that it performs at least as well and lasts as long as a factory original.

25
Omega General Help / Re: Catalytic convertor v6
« on: 25 June 2020, 12:08:08 »

Indees hard to find genuine 3.0 ones.. yes that was plan install sport cats into the 3.0 aftermarket cat pipes ive got as lambda ports already been done.

Car since owned at 70k has never had anything other rhan shell v power in it... all thats used


Finding a set of decent 3.0/2.5L cats will be difficult, if your going for sports cats, then use the 3.0L downpipes you've alread modified,  Or buy a at of new pattern 3.0L and modify to fit 3.2... but try using a quality fuel for a week, and give it Italian tune up First.

26
Omega General Help / Re: Catalytic convertor v6
« on: 25 June 2020, 08:53:17 »
I use cataclean twice a year anyways bud ... doesnt seem to have improved it

27
Omega General Help / Catalytic convertor v6
« on: 25 June 2020, 07:35:05 »
After some info.

On my 3.2 mv6 i always had issues with light being on (precat issue) decided for a change at 130k

I swapped to 3.0 downpipes but were copy cats no oem (poor quality i know) car went better  but cats rattled and light still on  so in the emd i decided go back to stock GM 3.2 downpipes.

Refitted but move second lambda boss post main cat. Whalaaa 10k later and still not had light on dash and no rattles from cats.

Now heres the issue.. since fitting them again (original Gm 3.2 pipes) definetely feels a lil down on power not as responsive and when it has a session of hard driving ( only has to be a mile or two) right under car where cats are you can feel heat standing by car it gets really hot. And has a slight smell.

Had this on other cars when cats are blocked or failing and wondering if it is a sign of the cats being past their best or just is what it is.

If they are due replacing whays best option. Do i buy approved new pattern cats.

Do i cut out gm cats and install sports cats in down pipe
buy 3.0 downpipes and have a o2 adaptor to move sensor aeay or something else ??

Any suggesstions or ideas be welcome

Cheers in advance

28
Omega General Help / Re: Gm exhaust numbers
« on: 25 June 2020, 06:55:48 »
Cheers gone withcome of the double skin clamshell types. 108 inc delivery  we shall see how it goes

29
Omega General Help / Re: Gm exhaust numbers
« on: 19 June 2020, 22:25:17 »
Andy b cheers for comment. So another who reckons jetex is quiet Inside

30
Omega General Help / Re: Gm exhaust numbers
« on: 19 June 2020, 22:13:07 »
Cheers for great insight. I don’t mind spending 500 ish on the Jetex just didn’t want to and find out on a motorway it boomy or can hear while sitting at 70 droning away.  I’d have to have tips removed though just not a fan but as you say personal preference.

Yes consensus seems eternal and ets seem good replacements

Yer I’ve had power flow in past they work but that’s it.


Once again I know but unfortunately (from experience) most outfitters ie power flow long life etc just franchises they know very little of exhaust design. How a system scavenges weather a x pipe is needed to balance pulses etc so never end up great.
..........

I do agree with you there. Before I fitted my Jetex system, which I never had any issues with noise wise, my car was booked in to Long Life at Weston-on-the-Green near Bicester. I'd told them that I wanted a complete duplicate of my original GM system on my 3.2 and they agreed that they could do it. I arrived for my appointment, my car went on the ramps and I just managed to stop the guy from cutting the Cat flange off. I asked what the hell he was doing and he said the easiest way was to weld the new pipe over the old pipe. I then noticed that they were going to run a single pipe instead of dual pipe so I got them to remove my car off the ramps and I left without having anything done. Some people have had good results elsewhere but I wouldn't use them or Powerflow personally. Jetex are a matter of choice but too expensive this late in the game for an older car. I have heard good reports of Eternal/ETS but have no personal experience of them. The reviews on here for them are good sound wise, they appear good value and if you've kept your original exhaust tips you could make it look as it was when it left the factory.  :y

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