Advice - PCM Map for Turbo install in N/A engine

[Schmieder]

I will tune by hand if I must but I am looking to see if anyone knows of a PCM map I can load up as a starting point.

3100/3400 hybrid 96GP.

I will have a 97 Lumina PCM for tunablility.

Is there any 3100 turbo maps I can base off of?

Should I get a 2-Bar MAP and scale the values in the PCM?

Or should I get a 2-Bar MAP and install Speed Density OS?

Just looking for tuning advice when converting from stock N/A tune to Turbo. Max 7 psi but ptobably starting around 4 psi gradually pushing up.

I read I will not max out the MAF, so I guess that is good and may not require a SD OS.

Just looking for the best path to tune for boost.

Thanks guys

[RedZMonte]

might want to check with some of the GA guys with turbos or superchargers... im sure someone on Powrtuner.com has a map you can download.

S

[Schmieder]

might want to check with some of the GA guys with turbos or superchargers... im sure someone on Powrtuner.com has a map you can download.

S

That would probably suffice, though, I am also interested in the methods employed converting from N/A to Turbo as well.

Any one know the basic fundamental procedures to allow a proper A/F ratio when encountering boost in a stock 1bar MAP?

Give a man a fish, feed him a day. Teach him to fish, feed him for a lifetime.

EDIT: One more thing. i think I asked this but I don't remember the answer and I don't have it in my notations.

What is the most boost I can push onto a stock 3100 internals w/o extreme wear and tear. I heard 5psi, 10psi, 8psi....

Just want to make sure 7psi isn't going to destroy a rod, piston, ect. Knock will not be an issue, intercooler and tuning KR out. btw, stock CR at 9.5:1

[RedZMonte]

everyone has refered me to this site for learning how to do a basic initial tune:

http://wiki.opentuner3800.com/index.php?title=Main_Page

as for the max your engine can handle..... that hasnt really been determined, allot of things will make everones opions vary... that is why you get so many different answers. I still say 10psi and under is safe with a basic tune is going to give you best reliability. again assuming you have all the correct fuel system and supporting mods and tune.. you can run more if tuned properly... Again no real definate answer... I have seen stock motors of all kinds of cars run 15+ psi if setup right run for years without blowin up... but verious others on he same ammount of boost pop after a week. all in tune and supporting mods..

S

[Schmieder]

everyone has refered me to this site for learning how to do a basic initial tune:

http://wiki.opentuner3800.com/index.php?title=Main_Page

as for the max your engine can handle..... that hasnt really been determined, allot of things will make everones opions vary... that is why you get so many different answers. I still say 10psi and under is safe with a basic tune is going to give you best reliability. again assuming you have all the correct fuel system and supporting mods and tune.. you can run more if tuned properly... Again no real definate answer... I have seen stock motors of all kinds of cars run 15+ psi if setup right run for years without blowin up... but verious others on he same ammount of boost pop after a week. all in tune and supporting mods..

S

What exactly do you mean supporting mods concerning the turbo?

If you mean BOV, WG, 2.5" exhaust, exhaust wrap, intercooler, colder plugs, high flow air filter, MLS Head Gasket, complete fuel/spark tune, larger injectors, ect then yeah, I have the supporting mods.

I have a few tuning guides but they are for the 3800v6 supercharger. Knowing turbos give boost in a different manner, not consistent like a SC, I'm curious on how to tune it very well.

I want my fuel trims near zero, spark advanced as much as possible with zero knock and tranny tuned for less clutch slip (more torque) but I am a bit confused on how to measure boost.

I know I can go Speed Density w/ 2-bar map but also read it isn't the best for low boost. I also read I can get a 2-bar map and scale the settings in the tune tables.

Ehhh, I'll figure it out.


So do you think I can run 10psi on stock internals with a good tune?

How much boost increase can I get from a mechanical boost controller? I'm going to install the controller in the cabin. Out of sight though so stray eyes won't turn it w/o me knowing it.

Thanks man.

I am very grateful for everyones help here, very grateful.