I have a 97 chevy cavalier z24 it has no modifications to speak of
I was looking in to getting a turbo charger well in the attempt to turbo i was thinking of going to a stand alone fuel management system along with engine management (all work would be done by local speed shop) first of all is it possible and what are the pro's and con's? also it possible to retain the top speed limiter?
This is mainly from my experiences with Megasquirt-II, but the concepts also apply to the higher end standalones as well.
Pros
- complete control of your engine.
- opens up many options as far as running different systems such as coil on plug ignition, anything tripped by a solenoid (such as the VTEC system is), among other things
- Changes to tables can be made "on-the-fly" opposed to having to reflash the PCM each time to make a change with HPT (specifically for J-bodies).
- You can decide yourself if you want to run Speed Density (MAP vs RPM) or Alpha-N (TPS vs RPM)
- Most standalones will allow at least up to a
TRUE 3 bar tune.
Cons
- illegal to be used on many public roads
- more difficult to setup than a software program that reflashes the stock PCM (such as HPT)
Unless the standalone has a way to read the VSS, then you will no longer have a top speed limiter. I'm not quite sure why you would want it either. Just be smart and keep the excessive speeds on the track where they belong. Also, I don't quite know what you mean by...
jgilk1 wrote:I have a 97 chevy cavalier z24 it has no modifications to speak of
I was looking in to getting a turbo charger well in the attempt to turbo i was thinking of going to a stand alone fuel management system along with engine management (all work would be done by local speed shop) first of all is it possible and what are the pro's and con's? also it possible to retain the top speed limiter?
A standalone is an engine management system. It will control both fuel and spark.
Edited 1 time(s). Last edited Saturday, January 05, 2008 1:38 AM
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"Youth in Asia"...I don't see anything wrong with that.
not to thread jack but, i was kinda wondering that same thing. Im building a 2.4 for turbo with atleast 15psi of boost and no more then 50 shot of N2O. I dont know if i should go with a stand alone like Megasquirt or to just swap everything over from a 2000- up j-body so i can tune with HPT with that high of boost ( heard theres some trouble tuning with that high of boost on the pre 00 computers) and use a piggy back for spark and stuff like MSD. All the wirings gonna have to be replaced anyways in the car becuase im goin from a 2200 auto to a 2.4 getrag 5 spd.
ok i didnt know a standalone fuel managment controled spark hey i learned some thing
^Not all of them do...but most.
The megasquirt also can do blended Speed-density and Alpha-N for a TPS vs RPM vs MAP based tune.
So where have people been mounting their megasquirts? It'll give me some idea for if/when I get/build one.
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