1989 s5 with vdi intake the car runs great drive it around shut it off and try to start it back up it wont start unless i pump it?..........if it starts at all
let the car sit for about 30 min and it will start right back up..............anyone have any ideas?

 

my guess , leaky injectors causing flooding my car does the same thing sometimes put in a fuelpump cut switch (which is just a bandaid) shut the car down by cutting off the fuel when its warm, then turn it over until it pops and flip the fuel pump back on it works like a charm. just and ider

 

Or you could be simpler with it and just install an mazdatrix H--pipe(also a bandaid)

 

Most common problem is leaky injectors. fix it right, fix it once, send themout to be cleaned

http://rceng.com/service.htm

-Jacob