9 replies to this topic

[Harry Beaver]

Really confused now, spoken to several shop, Simon at Minispares included & they all tell me that there is not problem with the Lambda position on a normal injection LCB manifold. Thay all told me there will be no issues with emissions at MOT time to to the sensor being in the wrong place for an MPi.

However, loads of people who have fitted LCB's to an MPi tell me otherwise.

It's not a good situation when the Mini specialist suppliers dont seam to know what work & what dosen't.

[Harry Beaver]

After more research I have found you can get a Y piece that has the Lambda sensor boss in, so therefore, if the sensor posn LCB is not a problem, why make the Y piece with it in.


I'm sooooooo very confused.

[minivanman]

Personally I'd use a Y piece with the sensor in. I've heard about MOT difficulties as well with the injection LCB.

[Big_Adam]

Think we need Mr Injection man or Mini Sprocket as he is known. He's the injection man.

[CooperTrooper]

not much help markelvin, but i bought an lcb and ypiece from maniflow earlier this year, and i have my MOT on wednesday, shall i let you know how it goes in regards to emissions?

Edited by CooperTrooper, 28 September 2007 - 09:40 AM.

[Sprocket]

Shouldnt make any difference, as if the pairs of cylinders fueling is that far out then there is a problem with the engine anyway. Having said that, if the sensor is in the collector, it will read an average of the fueling, in doing so, if one pair cylinders are lean, the other pair are rich, the engine will run better than if the sensor only read one pair of cylinders, but not as it should. That is not a fault of the position of the Lambda sensor, but the condition of the engine.

For refference, i ran the original Lambda sensor with standard ECU on cylinders 1 and 4 only and had no issues. I run a wideband Lambda on the VEMS and it is in the collector. I put it there because I could no other reason. I had run it originaly as above.

[[email protected]]

Like I said, I have never heard of an issue, but I am prepared to be told otherwise. I can see the logic behind why it could give a problem, and if it is an issue, I will talk to maniflow in order to solve it

[Sprocket]

Simon, if you were to move the sensor boss to the collector, it puts the sensor in a vulnerable place, not only that but you would have to supply a wiring harness to extend from the original location, then theres the issue of keeping the harness away from the hot exhaust.

When I fitted my WBO2 sensor in the collector, I drilled a hole in the tunnel next to the reverse switch hole and used a rather large IP66 grommet, the wiring is routed inside the car, but then so is my ECU.

Its not a simple and straight forward.

[minidaves]

ok ok lamba sensors lcbs etc, to be really honest leave the exhaust at the front alone as it is not that bad for flow to be honest and the lamber sensor works well at this point, however lots of problems on tpis for exhaust tests on mots is the mot tester does not do the correct test as minis have differnat tolerances to run in, and valve stem seal/worn valve guides cause an issue too on the closed breathing system.

[ceejam]

Why do people fit an aftermarket LCB to a car that already has an LCB setup from the factory that works very well, and allows you to remove the engine without removing the whole exhaust?