Originally posted by Billy
The problem is mechanical. Tuning can only do so much to help, but the issue is still trying to get the exhaust gases out of the wastegate fast enough to prevent the spikes.
Exactly. And why pay $175 for it? All that's required is to grind down one small area on the wastegate. You don't even have to touch the flapper mating area so there's nothing to be
too scared of.
EDIT: If the $175 includes removal and install I can see it being a little better but $175 for a minor port seems a bit much.