Tubular manifold
27 November 2018, 11:13 PM
#1
Tubular manifold
Hi my forged hatch sti is running 417bhp 420ft/lb torque will changing to tubular maifold give much more torque mods so far
owen development hta71 turbo (450bhp)
aem innerwing kit
bosch 650 injectors
full 3” decatted exhaust system
harvey up pipe
340lph fuel pump
still on tmic
owen development hta71 turbo (450bhp)
aem innerwing kit
bosch 650 injectors
full 3” decatted exhaust system
harvey up pipe
340lph fuel pump
still on tmic
28 November 2018, 09:11 AM
#2
Scooby Regular
something like an RCM / GT2 spec manifold (with matched Harvey Smith 'trick' up-pipe) will be far less restrictive than your current set-up at that level generally - we tend to find around 400 is the natural change point from ported headers / trick up-pipe
you will potentially loose a little spool swapping over so depends on how / where the car is used as to what you focus on
you will potentially loose a little spool swapping over so depends on how / where the car is used as to what you focus on
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john banks
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11 July 2002 03:51 PM