Pump Gas

[Dummy]

I put a pump gas regulater on a race gas boondocker kit it is on a 09 m8,how many pounds of boost can you run on pump gas having 4 injectors at 6500 - 8000 Feet?Thanks

 

[MCIVER]

are we talking about straight 91 pump fuel ? if so your good to about 8-9 psi

 

[Dummy]

straight 91

Sorry yes straight 91,having 4 injectors does not help boost levels? pump gas turbos can run up to 8-9 lbs.so having 2 more injectors wont bring up boost levels?Thanks

 

[MCIVER]

The problem is you just don't have the octane to support the higher boost. 4 injectors = lots of fuel but not enough octane.

 

[cpatts2000]

I was a told no more than 6 lbs

 

[MCIVER]

I was a told no more than 6 lbs

on the 09 m8 which I have and he's asking about, I'm running 7.5psi at 5500-6000 feet on straight pump. so I would have to say at 8000 feet 8-9psi shouldn't be a problem.

this is going to be different on sleds of other years,makes,engine size.

 

[cpatts2000]

on the 09 m8 which I have and he's asking about, I'm running 7.5psi at 5500-6000 feet on straight pump. so I would have to say at 8000 feet 8-9psi shouldn't be a problem.

this is going to be different on sleds of other years,makes,engine size.

I don't have a det sensor, so I am a little more leery.

 

[glassman]

I can only seem to get up to 7- 7.5 lbs of boost with the low boost actuator on the same sled. Is that all you can get on the pump gas actuator?