I wonder how much a 3in id log would have helped on the t6 housing

 

Considering I basically doubled the area of the pipe going to the turbo, probably not a whole lot.

Allen, what size turbine were you using on what size engine?

 

Nice info.
With the fab skills you could build a simple spool valve with manual controll to see if it helps your low end. Several vids on line were guys built their own. Using vacuum/boost controlling the valve.

 

Can I have sex with your welds? I'll be quick, promise....

 

Ill pay for your pleasure , 1 condetion though , they must be red hot

 

Nice upgrade and results. Are you still using the e-boost street controller also?

 

Yep, still using the eboost street.

 

Great R&D and write up Richard! dropping almost a point or 18psi in back pressure ratio is no small feat! Very interested in seeing where you go from here.

Nelson, did you mean Tubular manifold or Turbo manifold? Was curious as to if anyone's compared the back pressure ratio between a log style and that of a tubular style manifolds and also if maintaining the exhaust pulses via tuned pipes actually has a significant advantage over the log style.

Kinda funny that 5 years ago prior to Parish people where still debating whether log style manifolds could work!


There's two reasons why I bought CurtD's old parts. One, like Richard said Walker's welding is fantastic and two, he did a great job of actually engineering the system. There are alot of pipe diameters, pipe lengths, arrival and departure angle's of merging pipes and Y's that alot of times are overlooked. But Walker at MPfab did a great job making it all work and work well.