Originally Posted by KevinGross
Complete waste of money in a normally-aspirated engine. Which is not to say that if you drop a hundred quid on a chip, your highly subjective experience won't be that the car goes a hundred quid faster. Placebos are wonderful things.
My opinions come from putting actual cars on actual dynos. I have nothing to sell.
From what I've heard and read on forums (Uk & USA) the generic Chips have very little effect on paper & dyno sheets but most people that fit them claim they feel better or different sometimes the two are confused.
However a Live Mapping session to fine tune the car in it's existing state and with readily available fuel like we have in the UK (99 Octane) would result with more power and Torque.
I had this done and the Final results were very good @ 205 (bhp & Ft lbs) all on stock Ignition, AFM, & Fueling on a Lindsey Racing 2.7 with a Web 274 Camshaft. The first figure was 179bhp, so 26bhp was found.
This service seems to be quite rare that many know how to do this, or care to do it on the old Porsches , but it's not as cheap as a chip, but would cost approx $400- $500