No stock gas tank and FG bumper.... airflow??

[Scott Atk]

OK, first of all, I'm not in you guys' club. But, this is where lots of FAST cars are, so I thought I'd ask here. Recently during a track outing I basically blew apart one of my stock rear fillers on a 143 MPH pass. My theory is with the gas tank removed and a glass rear bumper, I basically have a small built in parachute at the rear of my car. Wondering if anyone has fabricated some sort of diffuser on the rear of their car? And if so, are there pics available? Id rather not do the "ricer" holes in the rear bumper.
Thanks, Scott

 

[cruzn57]

check out this thread

on another forum

Building a rear diffuser? - Pro-Touring.com

 

[S2V6RACER]

Never had a problem like you described at 168+

 

[Scott Atk]

I'm sure the 23 year old fillers would have gone eventually anyway. But I'm sure the bumper is catching a lot of air at anything over 100mph. I'm surprised nobody is fabbing up a simple sheetmetal diffuser. I'm gonna try and come up with something.