Vortech Installed!!!
Originally Posted by budzara
Most boost I saw was 6.6. Rarely does anyone actually see 7. Usually it's anywhere from 5.5-6.5. It is a 5AT.
Rick
Originally Posted by budzara
^^You are correct.
I've heard alot of 5AT's only getting about 5lbs of boost, so to get up to the 9lbs as advertised - you'd need the 2.87 for an AT?
Rick
Originally Posted by budzara
Ummm...yes and no. The 3.33 pulley yields 7 lbs of boost. There is some lost by the time it gets through the piping (I believe) so that 7 is highly unlikely. It all depends on the car/tuner/install. But, optimally, 7 is the goal/max for the 3.33 pulley. The 3.12 and 2.87 would yield similar results, just shy of the optimal psi. Going to the 2.87 is very risky without a lot of other enhancements, primarily a built short block and injectors.
Someone correct me if I'm wrong.
Someone correct me if I'm wrong.
Thanks!!!
Rick
a.k.a. RANDYS_G
Joined: Feb 2004
Posts: 6,417
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From: Glen Rose, Texas
Originally Posted by ISMSOLUTIONS
OK..and further, the 2.87 about 4lbs?
I've heard alot of 5AT's only getting about 5lbs of boost, so to get up to the 9lbs as advertised - you'd need the 2.87 for an AT?
Rick
I've heard alot of 5AT's only getting about 5lbs of boost, so to get up to the 9lbs as advertised - you'd need the 2.87 for an AT?
Rick
Originally Posted by GlenRoseFireFighter
ricer math...you have to assume loss since a 8lb stock pulley only get's 6.6
Issue is headers for me...breathing too well and the engine really takes all the pressure it can get - so lower boost result. HP is great though with lower boost on my car, so I'm not complaining..just want more..
Originally Posted by ISMSOLUTIONS
Not ricer math - just trying to figure out how to get 9-10....
Issue is headers for me...breathing too well and the engine really takes all the pressure it can get - so lower boost result. HP is great though with lower boost on my car, so I'm not complaining..just want more..
Issue is headers for me...breathing too well and the engine really takes all the pressure it can get - so lower boost result. HP is great though with lower boost on my car, so I'm not complaining..just want more..
Originally Posted by Mr_pharmD
what psi are u seeing with the 3.12 pulley?
Getting an average of 5 - 5.5 - but the car runs hard with the HP of 9-10lbs of boost.
Then again - heads and cams don't hurt in the power building cycle either. The increased efficiency is what has brought the boost level down...I know...I just don't want to take it apart more than once to get what I want.
Rick
Originally Posted by Mr_pharmD
I thought u were tuned for the 3.12 pulley? I dont see how u getting 9-10lb with the 3.33 pulley unless ure gauge is off. I'm on the 3.12 pulley and i'm seeing 8psi on my gauge.
Originally Posted by budzara
If you're going to get the 3.12 pulley make sure you get upgraded injectors (at least 380cc) and ditch the SS box. You could scale the SS box for the larger injectors, or get a TS reflash for the ECU, but I wouldn't recommend it. Get a Greddy EU, or better yet, a UTEC.
With the FMU and SS box adjustments, there should be no reason for Injectors until approximately 500HP or more...and I've got about 100HP til I get there - so the fuel system is something I'm not very concerned about for the power level.
Rick
but how safe is running the fmu at such a hi hp? I'm in the process of ditching the fmu and inline pump and just adding 440cc + walbro but no one has been able to give me a straight answer as to if this is possible. Everyone keeps telling to get the aam return fuel line but why is it needed? Do u even use the fuel regulator that comes with the kit or is it all for looks? I wish someone would be up front about the answer.
