From what I recall Test E 500 had not pip, but I mixed it with other oils and always massaged the area post injection for 3 to 5 minutes.
I believe one of our customer claimed moderate pip at 1 to 2 days after injection from Test Sust 500, but this is to be expected from such high concentration oil. I am an advocate of deep tissue massage post injection to help disperse the oil and prevent any PIP that there may be regardless if it's 100mg/ml or 800mg/ml.