This car is driving me nuts. Car will not stay running fires then dies vats was removed by cms also barro map tune installed I was able to get it to run for awhile feathering the throttle. Car has good feul pressure and computer has constant power. I'm lost car sounds great with initial fire then something changes

 

If u hold the gas will it stay on?

 

More info on the setup please.

 

70 camaro
Lq4 with th400 trans
60lb injectors
Barro map
Sd tune from cms
Car sound good on first fire then shuts down I was able to het it to run barley once has cOnstant fuel pressure and ecu has power

 

I was thinking vac leak but I thought it should still run right

 

Depending on how big the vacuum leak is it could cause an issue. How long does it run before it dies?

 

Just a second or two I originally thought vats but tuner insured me it was turned off I did reuse throttle and intake gaskets

 

ive reused them with no issues. sounds like vats but you said hes sure its tuned out. hows all the power connections and are all sensors plugged in?