redvetttes

Powder coating and upgrade doing,looking for a chip to can the EGR ,fan temp lower and not to radical on the performace side. Are there any other upgrade I should look at?
stock motor, just a upgrade on the exhaust

Nathan Plemons

Those mods dont require a lot of tuning skill, just change a few numbers. Look at the threads on here for a very good warning on who NOT to use.

redvetttes

Thread never came thru,would you please repost
thanks

Nathan Plemons

Posting from my phone I can't easily post a link. Thread title is "tuner warning" and should be right under this one.

redvetttes

Thanks a lot
I just want to get the EGR program out

Do the chips have to be burned?
for 250, I can buy the solfware and the burner
worth looking into
thanks

TTOP350

If your TPI is a MAF system you don't need to tune out the EGR.
Just unhook the electrical vac switch and EGR temp switch and never worry about the code again..

WW7

Doing this will also throw a code..Your better off having it tuned out.....WW

TTOP350

My car has been unpluged since 91. I have driven 200,000miles in this car and never had those codes after I unplugged them. Ever. Same with the 100 plus TPI cars I've worked on over the years. These are JUST controlled sensors, not feedback basically a on or off switch. The only real reason they set the code is if the "electric switch" shorts out.
These computers are sooo basic we call them ATARI computers. The right side of the computer really has no idea what the left side of the computer is doing.
Tuning it out is just clicking a check box to turn it off and unpluging it is just easier. Try it on the maf cars, if it works great, if it doesn't, hook it back up and pull out your ECM fuse to reset your computer.Your out no money.
I did forget to say its a good idea to remove the vac hose from the T-body and cap the nipple, don't have to but.

bjankuski

You are still better off having it tuned out, there is a code for a EGR error and it will set a light for the error, if everything is operating as it should be.

STL94LT1

Forum member Mic "mseven" does good work.

TTOP350

Of course its your car and you may do as you wish. I'm just giving out some "free" ideas to you guys n gals that do work.
Yes, there is a code for it buuuut with these electrical switches, if they aren't there (hooked up), they can't set a failure code, uuuunless the grounding switch in the ecm croaks (very rare).. I like free.
cheers n beers.

Dr.Huxtable

redvetttes

I have a 1986 L 98 with a mas air flow unit
I have the sensor in the shop at work and it measures 0.3m ohm
going to drop it in a Hotbox to see if its a analog or a switch
What temp does exhaust gas run at ?
Hot box will hit 1200 degrees
if I dont need to program it great
Will a laptop change or do I need a chip burner ?

Mountain 55

Wait for me Caleb, I'm coming with you. I totally agree with you!

JrRifleCoach

You will have to have some one with the equipment to burn a chip for you.
Might I suggest that you contact PCMforless. They'll take good care of you.

cv67

Another vote for Mseven.

Knows his stuff more than most.

If you have other issues with your car the best tune in the world wont fix it. Half the problem with most "tuning" complaints out there.

redvetttes

Looking at the GM prints its a normally open contack that closes on temp rise.
it ohm out at 0.3 meg ohm. That is preety much an open circut and the ECM most likey sees faint voltage to tell if its hook up. On temp rise it closes to tell the ECM the system in working, So a 12 volt relay,hi value resitor should do the trick.
I want to see if it kicks a code out anyway.
What do I do for a living, Automation, PLC's and robots
What's the best solfware to get to look at and change the ECM ?
I want to get more into that
thanks for the help everybody

AGENT 86

My 86 has set no code for EGR, since I cut and terminated all the EGR wires. That was about 8 years ago.

If you want lower fan temps and don't want to spend the money on a custom chip, buy a lower temp fan switch and tie it into both fans.

redvetttes

Thanks for the info 86
its a summer cruiser for my wife,would 180 be to low causing the fan to run to much?

Nathan Plemons

That's going to depend on your thermostat that you put in it. Remember that a thermostat actually only controls the MINIMUM engine temperature. So if the fan is set for 180, but you have a 195 thermostat it will run continuously.

That's why I like adjusting it in the computer, you can set it to whatever you want without having to go with the "off the shelf" options.