Crap exhaust, crap mpg??

[jonno_c]

The breakdown chap the other wk mentioned my exhaust was on its way out which I was aware of, however he also said it wouldn't help the MPG. Anyone heard that before? ? Its blowing a bit and is the original on an 05 182.

 

[The Fatty]

depends if its pre-lambda or not. pre-lambda = yes.

 

[JonnyGee]

or collapsed further on causing a massive restriction

 

[jonno_c]

Any idea on how to check whether it is or not?

 

[Mosley182]

If mine has a decat and a fault comes up with the lambda would that make effect the performance

​many thanks Adam

 

[Beasley Clio182]

If mine has a decat and a fault comes up with the lambda would that make effect the performance

​many thanks Adam

Shouldnt do ive had a decat on mine for about a year ish and always ran it on super unleaded , MIL have never come on ! maybe a coincidence but when people run them on normal unleaded they seam to have the MIL come on, and people who run on super dont , maybe just the ones ive seen / heard though !

 

[Mosley182]

It's not slow but the fault is comming up on the pre cat lambda sensor. Wich brings the engine management light on.

 

[Beasley Clio182]

It's not slow but the fault is comming up on the pre cat lambda sensor. Wich brings the engine management light on.

Pre cat lambda could be faulty or covered in crap, thing is with no second sensor the engine doesnt have a value as to weather the cat is working obviously as it isnt !

Quick diag would be remove sensor and clean it up, could be fouled up, if the sensor is faulty try swapping it to the rear and plugging the front in to see if the fault moves position to the rear

 

[scotty10]

Could the cat be on its way out would that affect mpg ?