mapping of apexi pfc?

[AndersE]

If i get a mapping done for my fd with 3" catback, apexi intake, fmic, silenced midpipe, do i need a new map if i later add a 3" downpipe?

[trevtubby]

Im no expert, but i`d say yes. Usually de-cating a turbo`d car makes quite a difference with boost levels etc, so to be on the safe side i`d fit the downpipe first and then get it mapped?

[AndersE]

ok, thanks

[chrisJDM]

yes you probably would, you really want to get it mapped if you already have those mods fitted

[SiH]

Yup, definitely :nod:
You may also need to look at porting the wastegate due to the decrease in back pressure possibly causing bosot creep.
Mine creeps about 0.1-0.15 bar at the top

[AndersE]

It should have sad: i AM mapping soon with all above except dp. What i meant was if i need another map after adding dp.

[neil_jdmr]

Is the car a uk/us model or a japanese import?? Why i ask is if its an import i think you will be safe enough on the original map. If its a uk car with the pre-cat in the dp then i would imagine you would need it mapping again after you replace it.