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optimusprimer · 18-11-11, 06:46 PM

what are the derv folk getting for round town mpg? Last week I had a mix of town and motorway driving and managed 45mpg (wasn't being overly gentle on the right peddle). This week I put in the same tenner's worth in and seem to only getting about 22mpg round town only.

I do short journeys with low revs, not much turbo action. The car is running SDI injectors, 19psi boost, decat and filter, is it this combo that could be reducing the mpg round town? Do the SDI injectors have much effect on the economy?

whilst the extra power is alot of fun I am toying with the idea of returning it to stock. What should I be getting round town as stock?

The reason I got a derv was for the economy aspect, the figure I'm seeing at the mo arent much better than I was getting out of my BMW 525 petrol.

OR is the low mpg pointing to something having gone boobs up?

18-11-11, 06:46 PM	#1
optimusprimer Member Join Date: Nov 2011 Location: Gainsborough, Lincs Posts: 38	round town mpg on derv? what are the derv folk getting for round town mpg? Last week I had a mix of town and motorway driving and managed 45mpg (wasn't being overly gentle on the right peddle). This week I put in the same tenner's worth in and seem to only getting about 22mpg round town only. I do short journeys with low revs, not much turbo action. The car is running SDI injectors, 19psi boost, decat and filter, is it this combo that could be reducing the mpg round town? Do the SDI injectors have much effect on the economy? whilst the extra power is alot of fun I am toying with the idea of returning it to stock. What should I be getting round town as stock? The reason I got a derv was for the economy aspect, the figure I'm seeing at the mo arent much better than I was getting out of my BMW 525 petrol. OR is the low mpg pointing to something having gone boobs up?