You've done the exhaust end. What about the air intake end? When I was a taxi driver, all I did was drop in a K&N panel filter in to the air box. No adjustment to the exhaust end, but I knew straight away there was a difference.... Where I taxied, it was very hilly. Before the filter, I had to change down quite a bit on certain hills. After fitting, no need to change down a gear - even with 6 adults in the car too! Less gear changes in normal driving too which means another fuel saving. Never actually worked out the savings, but I did notice a difference...
------------- Damned if I do...
Damned if I don't!!!!
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