ValverInBits
I just thought i'd better post up and let you all know about my finidings when changing lambda sensors.
On my valver:
Changed the lambda sensor (which was utterly fubared) for a nice new NGK one (£54ish iirc). The NGK seems a better part than bosch BTW, comes better packaged with plastic gaurd and copperslip applied.
Results: Tickover - faultlessly smooth, MPG WAY up (although not measured, still easily noticed), Noticably quicker too.
On my Ph2 172 (2002):
Changed the upstream (before cat) lambda when doing my 182 manifold and decat conversion. Went for a Bosch lambda as the NGK was about £98 and this bosch part set me back £56.61+vat from central auto supplies. Seemed really easy to remove the old one on a car of this age.
Results: Can't make any comments on power gains as this will be mostly down to the 182 manifold and decat. MPG - This is where it get's interesting - Holding the car at 80 (kmph) on a flat stretch of motorway, I reset the MPG reader. The first figure that came up was 47.5mpg! I repeated the same 30 mile journey i had done with my old lambda at the same sort of pace (pretty quick
) and MPG for the 30 miles is now 33.5 up from 28.3! Which is an improvement of 5.2 MPG. At £1.10 per litre the lambda has paid for itself in 2217 miles
From these experiences, I'd advise anyone who is experiencing unusually poor MPG to change their lambda for a good quality, brand new replacement.
shoot me down if im an idiot, but the evidence here seems convicing enough for me.
On my valver:
Changed the lambda sensor (which was utterly fubared) for a nice new NGK one (£54ish iirc). The NGK seems a better part than bosch BTW, comes better packaged with plastic gaurd and copperslip applied.
Results: Tickover - faultlessly smooth, MPG WAY up (although not measured, still easily noticed), Noticably quicker too.
On my Ph2 172 (2002):
Changed the upstream (before cat) lambda when doing my 182 manifold and decat conversion. Went for a Bosch lambda as the NGK was about £98 and this bosch part set me back £56.61+vat from central auto supplies. Seemed really easy to remove the old one on a car of this age.
Results: Can't make any comments on power gains as this will be mostly down to the 182 manifold and decat. MPG - This is where it get's interesting - Holding the car at 80 (kmph) on a flat stretch of motorway, I reset the MPG reader. The first figure that came up was 47.5mpg! I repeated the same 30 mile journey i had done with my old lambda at the same sort of pace (pretty quick
) and MPG for the 30 miles is now 33.5 up from 28.3! Which is an improvement of 5.2 MPG. At £1.10 per litre the lambda has paid for itself in 2217 milesFrom these experiences, I'd advise anyone who is experiencing unusually poor MPG to change their lambda for a good quality, brand new replacement.
shoot me down if im an idiot, but the evidence here seems convicing enough for me.
