I recently purchased a 1.8 petrol LS 2003 with 70k on it.
It was serviced etc prior to me buying it after a few months I got a P0170 fuel trim bank 1 error, I was told by a local garage to replace the MAF, so I put in a Bosch MAF. Most of my driving is local and from £20's worth of fuel I am lucky to get 80 miles.
Is that about right or could it be one of the other sensors? A friend recommended putting Cataclean in, to improve the fuel economy.
In two mins whether to try this stuff, or whether I should get a proper diagnostics done from HI-Q as the P0170 code was read using one of the RAC readers from Argos.