I have just fitted one of these highly regarded products (according to the magazines!!!) to my MY99 Type-R. I have done about 80 miles so far, not enough to see a difference in fuel economy just yet. I was wondering if anybody out there has had one fitted for a while and actually seen an improvement in fuel economy? Also has anybody noticed a slight lack of power or maybe its just phsycological????

Cheers,

Craig.

 

I fitted one to Clio16V and then to Impreza Turbo.
It made a lot of difference to the Clio.
With the Turbo I didn't think it was any different speed wise and the mpg might have gone up slightly, but not much change on the whole.
I wouldn't buy one for the Turbo, but I already had one so I whacked it on.

Regards Adam

 

i think at the time when i fitted mine, i was happy with the results, got 1 or 2mpg more, but if i remember rightly they don't work when you've got any turbo boost pressure

 

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