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[Abiton]

I've just looked on ours, and the vac pipe from the FPR goes to the nipple on the throttle body just under the IACV, and nowhere else. Ours is a '96, manual trans, but I doubt this is any different on a 98 auto.
Hopefully someone with a 2L auto of about the same vintage as yours will confirm.

And yes, I'd think possibly this 'mod' would knob up the correct operation of the FPR.

[idc62]

Think i'll get rid of it tomorrow and see how it goes on a run in the pm.Would be nice to hear if any one else has come across this or if a filter on the small pipe would be of benifeit??.

[Abiton]

Check that the vac nipple on the TB isn't clogged up, nor the thin vac pipe. Connected as it was, it probably got a lot of oil mist and crud going through it that it shouldn't have.

[idc62]

yep cleaned all of that to day all squeaky clean now

[Abiton]

I meant the vac nipple/vac pipe for the FPR, not the "small breather".  Actually, if the vac pipe from the 'extra filter' to throttle body was on the clean side of the filter, maybe it won't be all clogged up.