I've noticed this for a while and it's starting to bother me so I thought I'd put a post in for opinions/suggestions. Whenever I gas it hard in 3rd, 4th of 5th w/ or w/o ac on, I hear a rattling sound. Sometimes it lasts just a second, some others it goes on for a little longer and goes away. It's a rattling sound and I'm scared it might be pinging. It sounds like if someone were to take a bolt, put it in a tin cup, and shake it around real fast. It may just be me but it also feels like I lose power when it does this. I put 93 octane in my car (I have a 91 octane tune on the sct). Any ideas or suggestions as to what it may be and how I can fix or ignore it?
Gabe
Gabe
I seafoamed not too long ago, maybe 6 or 7 months. I cleaned my maf and bought some octane booster/cleaner at walmart...It was still pinging even though it's night and cooler but only when I slammed the gas pedal and for a split second. 
