Originally Posted by minuccims
You should be all set after pro tuned. Do you know how different the air flow is? If it it very different, may want to install just before you tune.
I'm not really that worried about it.
If the tuner can get everything right with it installed and it doesn't mess with the MAF then great, if not they'll install the stock silencer again. I have a feeling it won't be a problem though.