BOOST numbers with fixed pulleys
#27
Super Member
#28
Aren't you at altitude?! What pulley combo you running, and do you have headers or no?! Most I've ever got with a crazy stack is like 12psi at 5-8k DA ranges.
#31
MBWorld Fanatic!
Your lucky you have the Weistec lower as they stopped making them. Would really like to have one as my crank is already pinned for it as well.
#32
Super Member
I’ve ran 68 fixed and saw 16.5, 72 fixed at 15, & currently running 70 scp at 15???? But there were a few times I went to limp mode with the 70. Not sure if it was a blimp but had to pull over and restart to get sc engage again. I’m doing stack 180/83 this week. I’m by the coast in So Cal so not sure what DA is average.
#33
Super Member
I was at altitude for a couple years, the last year and half been at sea level. Running a 77mm upper and 170mm lower. Yes I have custom LTH's and still trip the lean map in 4th gear.
#34
Super Member
I’ve ran 68 fixed and saw 16.5, 72 fixed at 15, & currently running 70 scp at 15???? But there were a few times I went to limp mode with the 70. Not sure if it was a blimp but had to pull over and restart to get sc engage again. I’m doing stack 180/83 this week. I’m by the coast in So Cal so not sure what DA is average.
#35
Super Member
#36
PLATINUM SPONSOR
The boost depends on your mods and air DA as well. For example, headers & Ported heads lower boost but any intake side mods will increase boost. So boost is very relative to DA and mods. Hard to compare boost from just a pulley, unless each car has same mods and DA at the time.
We always stock 70, 74, 77, 80 and 83 mm fixed pulleys going back from when we introduced this mod to MBworld about 8 years ago. Great, easy and simple mod; and yes it sure jumps boost! That instant power with no clutch slip is what really makes it fun!
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd