I just got my results back this morning and I finally passed the CFD exam on my second try. Honestly I'm still kind of in shock. My first attempt I scored a 68 and needed a 75, so I had to completely rethink my approach before sitting for it again.
The biggest game-changer for me was drilling with a CFD practice test over and over until the question formats felt familiar. My first time around I spent almost all my study time re-reading the ASPE reference manual, which honestly wasn't enough. Second time I built in timed practice sessions every other day for about six weeks and my retention was so much better. I also found a solid study guide that broke down the fluid dynamics and pump sizing sections specifically — those two areas killed me in round one.
If you're currently prepping, I'd love to hear what's tripping you up. Happy to share more details on my schedule or the resources I used. The exam tips I picked up from people on forums like this one genuinely made a difference, so I want to pay that forward.