1995 T/A OBDI reprogramming

[sachadesousa]

okay i have a stock 95 birdie and i was wondering about electronic programming

im also planning on making my own cold air intake, and other cheap mods (i am a student so i have low funds)

i was wondering how much more power i am expecting, even if there is a way that i can cut down the power to save gas (student)

and for the programmer, i am a genius in circutry, and i was wondering if there is a way that i can build my own programmer that i can hook upto my laptop and flash it

thanks alot for your time

Sacha De Sousa

[LowETz]

Not real up on LT1 PCM's but I believe there is Edit software for OBDI. I know I've seen stock OBDII programs showing fairly significant gains by just tweaking the fuel maps/timing tables..... up to as much as 23 rwhp/20-30lbs.ft.rwtq., so yes, there are benifits to playing w/the stock program even if you have only minimal mods.

A "good" tuner should also be able to moderately improve fuel mileage.

Check out LS1tech.com and hit the Lt1-Lt4 subforums for some good reads on OBDI GM motors.

[FormulaLT1]

The 2 guys specializing in LT1 tuning are Ion from www.madz28.com and Bryan from www.pcmforless.com . You can program your eprom right from inside the car at the aldl under your steering column with a cable from http://www.akmcables.com/ic.htm ,that way you have no down time and for 75 dollars total you can buy a unlimited tuning package from pcmforless and so any time you mod that requires a pcm change they will send you the new tune via email and you can upload it that same day. Also check ebay for a obd cable as they are usually alot cheaper there. Good luck

John

[tuske427]

You also mentioned about building your own cold air intake. I had a '95 T/A and made my own from parts found at any home depot. I used 4" ducting for the main section of it and this is what I attached my K&N air filter to. the area near the radiator I used a flexible ducting hose that I wrapped in insulation so it could clear the radiator. It worked great and didn't cost much to make.

Also- check out LS1.com for some other cool tips that can be applied to the LT1 cars. example- if you have a 6 speed you can buy a specific resistor and use this to disable the CAGS on your car. I did it and it worked great. It cost me a dollar at Radio Shack and about 5 minutes of time. Much better than those 30$ kits they sell...

There's also a sensor that hooks up to the "elbow" on the intake. This sensor helps advances/ retards the timing. they show to re-locate this further up front, which advances the timing as it reads colder air.... again a freebie mod. and then there's the coolant bypass on the throttle body.

all good stuff and affordable too.

good luck!

[sachadesousa]

thanks for the imput, i was looking into cold air intakes for some time, i would have done it already, except for time issues

i read somewhere if you drive the engine cooler the fuel doesnt combust to its most efficient potential, and ultimately runs the engine harder... is this correct?

[LowETz]

Key word is engine temps, and this is true. Combustion chamber temps need to be at design specs to efficiently burn the fuel.

AIR temps are different.... cooler/colder air is denser.
This is why you'll see any car trap better at low DA(density altitude)tracks. The lower to sea level the more oxygen.

This is a good thing. The cooler(denser)the charge, the more oxygen is available. More oxygen = more power.

See link for an interesting read on DA.

http://www.staginglight.com/guide/air.html