STS users! You running cats or no cats?
Thread Starter
TECH Addict
Joined: Nov 2001
Posts: 2,659
Likes: 1
From: Bellevue, Wa
STS users! You running cats or no cats? A non scientific to this point test was just done by a local shop.
Dialed in the car at 5psi with cats, then the next day he removed the cats and he says the car feels much stronger now.
Car will hit the dyno again soon to see how accurate the buttmeter is.
Just thought it was interesting.
Dialed in the car at 5psi with cats, then the next day he removed the cats and he says the car feels much stronger now.
Car will hit the dyno again soon to see how accurate the buttmeter is.
Just thought it was interesting.
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Blackbird, I would seriously consider trying the following:
stock CAST manifolds (00 and up)
stainless steel 2.5 inch ORY pipe (Will retain heat better than mild steel)
FM 2.5 into 3 inch collector
3 inch Intermediate pipe (in stainless)
into turbo
I think that would show a lot more power than the stock setup
If you must have cats (emissions reasons) get dual 3 inch carsound cats and 2.5 into 3 inch cones from flowmaster. Each cat flows 480+ cfm (the 93005 magnaflow/carsound cats) and the smooth cones will allow a nice transition between the two.
stock CAST manifolds (00 and up)
stainless steel 2.5 inch ORY pipe (Will retain heat better than mild steel)
FM 2.5 into 3 inch collector
3 inch Intermediate pipe (in stainless)
into turbo
I think that would show a lot more power than the stock setup
If you must have cats (emissions reasons) get dual 3 inch carsound cats and 2.5 into 3 inch cones from flowmaster. Each cat flows 480+ cfm (the 93005 magnaflow/carsound cats) and the smooth cones will allow a nice transition between the two.
