TurboEncode OFDM Modulation with Pilot Tones

I am trying to implement turbo encoding on an OFDM modem. The problem is that I have pilot tones to support a Rx equalizer.

I can't find anything on the web that gives any clues. Would appreciate any help I can find.

In the encoding process, the first thing that is done is intrlvrInd = randperm(length(dat)), which scrambles all the data, including the locations of my pilot tones, which need to be fixed.