Re: Is there any point upgrading the air filter on a JTD16v engine?
GSR can supply an airfilter, I don't know what comes with the package as mine really was prototype.
The air mass meter fits into the pipe, so you disregard the old housing.
I didn't have a before and after on the dyno as it was fitted in derby, never got back to the dyno either as the car went intoa garage for various bits, including cracked exhaust manifold, and some tart set fire to the garage!!!
Anyway, the car survived (as it was outside that night) and is now up at my unit having the following done:
600x400 (core size) FMIC fitted.
Inlet manifold chop, reweld an reworking to povide 2.5" entry.
Reworking on the turbo housing so it exits the other way, and nlarging the exit on the housing.
And a shed load of other general maint stuff.
The GSR pipe for my car was its max length, which meant the filter sat in the inne wing where the intercooler would usually sit (I have always gone front mount for the IC)
The pipe does work well, spool up is loads quicker than the standard setup (again, I always got rid of the standard setup) and it will breath much better.
My problem could be - I may need to go 80mm on the intake to help stop the air mass going off the scale? Wait and see.