Input on my boost control issue
#1
Input on my boost control issue
To bring you up to speed, I'm running a mostly stock LS1 with a TC78. The entire setup was made by me to fit the tight constraints of a BMW engine bay.
Here are a few pics of the setups progression
Made a plan for the wastegate:
Wastegate is a PTE 46mm. I really thought this setup would work great. It does not. I have a 7lb spring in it with no boost controller. The wastegate is an open dump and the car has a full 3" exhaust. The gate opens right at 7.5-8psi. It will hold 8-9 psi in 1'st gear, about 11psi in 2nd gear and 16 in 3rd gear. I havent run it at all in forth gear, but I can imagine that it will continue to climb. I guess this winter I will pull it back apart and try something else. Tight spaces will not allow me to run a wastegate right out of the side of the collector. Any other ideas?
Here are a few pics of the setups progression
Made a plan for the wastegate:
Wastegate is a PTE 46mm. I really thought this setup would work great. It does not. I have a 7lb spring in it with no boost controller. The wastegate is an open dump and the car has a full 3" exhaust. The gate opens right at 7.5-8psi. It will hold 8-9 psi in 1'st gear, about 11psi in 2nd gear and 16 in 3rd gear. I havent run it at all in forth gear, but I can imagine that it will continue to climb. I guess this winter I will pull it back apart and try something else. Tight spaces will not allow me to run a wastegate right out of the side of the collector. Any other ideas?
#2
8 Second Club
iTrader: (4)
To bring you up to speed, I'm running a mostly stock LS1 with a TC78. The entire setup was made by me to fit the tight constraints of a BMW engine bay.
Wastegate is a PTE 46mm. I really thought this setup would work great. It does not. I have a 7lb spring in it with no boost controller. The wastegate is an open dump and the car has a full 3" exhaust. The gate opens right at 7.5-8psi. It will hold 8-9 psi in 1'st gear, about 11psi in 2nd gear and 16 in 3rd gear. I havent run it at all in forth gear, but I can imagine that it will continue to climb. I guess this winter I will pull it back apart and try something else. Tight spaces will not allow me to run a wastegate right out of the side of the collector. Any other ideas?
Wastegate is a PTE 46mm. I really thought this setup would work great. It does not. I have a 7lb spring in it with no boost controller. The wastegate is an open dump and the car has a full 3" exhaust. The gate opens right at 7.5-8psi. It will hold 8-9 psi in 1'st gear, about 11psi in 2nd gear and 16 in 3rd gear. I havent run it at all in forth gear, but I can imagine that it will continue to climb. I guess this winter I will pull it back apart and try something else. Tight spaces will not allow me to run a wastegate right out of the side of the collector. Any other ideas?
#3
TECH Regular
iTrader: (3)
It looks like that setup should work good. what exhaust housing? .96 t4? I wouldn't think back pressure at that low boost would cause that...I had a single 44mm tial gate welded 90* off of the merge with a cammed ls1 and a t6 s480 and it would hold right a 9lbs with a 8lb spring.....idk try adding another 46mm gate.