Omega Owners Forum

Chat Area => General Car Chat => Topic started by: bigtow on 12 April 2013, 21:54:58

Title: whats happened to my mpg
Post by: bigtow on 12 April 2013, 21:54:58
what going on with my mpg when i first got my 3.2 manual estate it had a lsd fitted and i was getting around 26 mpg when the lsd died i fitted a 2.5 diesel diff and was getting 28/29 mpg then the rear box went rotten so the boy racer came out in me and i had straight through pipes fitted and it dropped to around 27 ish i have now replaced the whole system with one of the ones like eternalcar supply from Poland and it has dropped to 25 mpg ? i did have the eml light come on ages ago before the exhaust back box failed and we came to the conclusion it was the common pre cat fault . i gave the car a drink of super unleaded and some injector cleaner and the light has been off ever since ? 
Title: Re: whats happened to my mpg
Post by: Entwood on 12 April 2013, 21:57:51
EML light .. don't assume... check ... pedal trick.  If the light is on do it and tell us the codes .. :)

http://www.omegaowners.com/forum/index.php?topic=90581.0

read and obey .. :)
Title: Re: whats happened to my mpg
Post by: bigtow on 12 April 2013, 22:02:02
EML light .. don't assume... check ... pedal trick.  If the light is on do it and tell us the codes .. :)

http://www.omegaowners.com/forum/index.php?topic=90581.0

read and obey .. :)
i done that and posted a video of the result on here and one of our faithful trusted members said it was the pre cats 
Title: Re: whats happened to my mpg
Post by: tigers_gonads on 12 April 2013, 23:20:52
Maybe the pre cats are collapsing and restricting the exhaust gasses escaping  :-\ 
Title: Re: whats happened to my mpg
Post by: symes on 12 April 2013, 23:28:02
Maybe the pre cats are collapsing and restricting the exhaust gasses escaping  :-\ 
+1