GTP 85
291 hp @ the wheels
- Joined
- Aug 23, 2006
- Messages
- 1,462
- Reaction score
- 22
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- 0
- Age
- 38
- Location
- Murray Bridge S.A
- Members Ride
- MY04 WRX, VS SSenator & VS V6 track weapon
Just wondering...
On my mildly modded VS V6 5 speed i have an exhaust in which im unsure if it may be restricting performance? It has extractors, twin cats, twin 2 inch into single 3 inch, 1 dogleg muffler and straight out the back.
Engine mods are: Light head porting, YT 1.8 rockers, new lifters, new pushrods, new valve springs, ported intake manifold and TB, K&N and custom CAI.
I had a regrind cam in there, but was unhappy with the results. I plan on installing another custom cam for a bit more lift, and maybe shaving the heads? Don't want to got to town on it, but would just like some more grunt. My tuner does a good job extracting a very consistent power output, on several different dynos ranging from 129- 134rwkw, even making 140 about a year back (i think she was just a happy dyno!!)
The car feels very punchy and quite comfortable anywhere in the rev range and alot of 5L's with exhausts are a pushover But anyway...back to my point!! would i be better off upgrading to twin 2-1/4 or twin 2-1/2? would i make more power just from this step up, or would i possibly go backward?
How much power will my current twin 2 inch, twin cat setup accept before it is a restriction?
p.s my dream is to make 150 at the wheels n/a without touching the bottom end. Do you guys reckon this is possible? I know its not a huge goal, but its what i want to achieve before i move on to a new car.
On my mildly modded VS V6 5 speed i have an exhaust in which im unsure if it may be restricting performance? It has extractors, twin cats, twin 2 inch into single 3 inch, 1 dogleg muffler and straight out the back.
Engine mods are: Light head porting, YT 1.8 rockers, new lifters, new pushrods, new valve springs, ported intake manifold and TB, K&N and custom CAI.
I had a regrind cam in there, but was unhappy with the results. I plan on installing another custom cam for a bit more lift, and maybe shaving the heads? Don't want to got to town on it, but would just like some more grunt. My tuner does a good job extracting a very consistent power output, on several different dynos ranging from 129- 134rwkw, even making 140 about a year back (i think she was just a happy dyno!!)
The car feels very punchy and quite comfortable anywhere in the rev range and alot of 5L's with exhausts are a pushover But anyway...back to my point!! would i be better off upgrading to twin 2-1/4 or twin 2-1/2? would i make more power just from this step up, or would i possibly go backward?
How much power will my current twin 2 inch, twin cat setup accept before it is a restriction?
p.s my dream is to make 150 at the wheels n/a without touching the bottom end. Do you guys reckon this is possible? I know its not a huge goal, but its what i want to achieve before i move on to a new car.