12-06-2012, 02:54 PM
No.
I remember years back a friend doing an MBC and they broke something and ended up with their turbo out to fix it.
There might be an easier way but I'm not sure.
I think adjusting the waste-gate arm is better longer term. It's not as convenient but it technically has a better operation. Ideally an MBC does the job but the wastegate is still set at the lower boost level. Ideally to get the very best performance you want the wastegate set at say 20psi, and the MBC at 21psi so you get the best wastegate behaviour once it is actuated, and you get the MBC masking of boost to the wastegate (reducing creep) till the very last moment, meaning very fast turbo response.
However, in the lower gears sudden massive torque is the last thing you want, and in the higher gears the fact you are running a small turbo hard at 150bhp means the lag is minimal any way.
The wastegate closed up just seems to complement the delivery of torque and make it a nice smooth rounded output all the time. MBC can't really improve on that in my view.
As an alternative to the boost take-off being on the elbow, you can also use a bayonet type fitting on the silicone leading to the elbow. That is what I did. Then when the boost was set correctly and general running was assured as good after a few months I just reverted to a pipe without the take-off.
Seemed to make sense to put a hole in a £10 piece of silicone vs a £30+ ally pipe!
Cheers
Dave
I remember years back a friend doing an MBC and they broke something and ended up with their turbo out to fix it.
There might be an easier way but I'm not sure.
I think adjusting the waste-gate arm is better longer term. It's not as convenient but it technically has a better operation. Ideally an MBC does the job but the wastegate is still set at the lower boost level. Ideally to get the very best performance you want the wastegate set at say 20psi, and the MBC at 21psi so you get the best wastegate behaviour once it is actuated, and you get the MBC masking of boost to the wastegate (reducing creep) till the very last moment, meaning very fast turbo response.
However, in the lower gears sudden massive torque is the last thing you want, and in the higher gears the fact you are running a small turbo hard at 150bhp means the lag is minimal any way.
The wastegate closed up just seems to complement the delivery of torque and make it a nice smooth rounded output all the time. MBC can't really improve on that in my view.
As an alternative to the boost take-off being on the elbow, you can also use a bayonet type fitting on the silicone leading to the elbow. That is what I did. Then when the boost was set correctly and general running was assured as good after a few months I just reverted to a pipe without the take-off.
Seemed to make sense to put a hole in a £10 piece of silicone vs a £30+ ally pipe!
Cheers
Dave