Induction kit??

[iainc]

Andy F will give you an exact answer but in general the later cars tend to run richer on a std ECU after fitting a cone filter.  The std airbox ultimatly breathes through the snorkjel on the slam panel or the inner wing.  The diameter of the std opening is less than that of the after market cone filter.  The car will breathe more air in on the induction stroke as a result of less resistance and a greater hole to breathe through.  This in turn gives the MAF sensor a greater signal for any given point on the ECU map.  The O2 sensor will try to compensate up to a point but in general the car will run richer than normal

If you want the car to spit flames Hannu Mikkola would be proud of out the back,  Fit a VTA Dump Valve, Decat and a Cone Filter to a std ECU

That's what I was asking though, if it uses the same unit as the OEM setup (ie not taking the sender out and fitting it to a larger unit) then it can't flow more than normal. The way I understood it, was that, with the kits you move the sender to another part on, the opening itself was larger and the sender wasn't able to calculate the flow as it was based on say a 4" diameter whereas the new part used a 5" diameter pipe (figures plucked out the air before someone says it's 3.7546" actually [])

Not bothered about spitting flames (although the decatted wagon I had managed them).