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01-24-2015
1990 Grand Prix turbo, Max boost tune?
This guy has a tune that maxes out the boost on a 90 Grand Prix turbo:
http://powertuneplus.com/tgp/1990tgp.shtm
Does anyone know where I can buy a chip with this tune?
I have a 90 Grand Prix I am restoring and I want to give it some more power.
Not his tune in particular, but I was hoping there were others who tried this, I cant be the only one considering upping the boost.
01-24-2015
Chances are you'll have to contact someone with the ability to burn chips. JET performance did mine way back in the day for my Fiero and my mom's Z24.Originally Posted by GHOSTOWLGRID
01-24-2015
Yah, I found the burner and the chips. I can buy them online.
I was just hoping someone would have the tune, I could just download and burn.
I contacted the person behind the link in my original post in hoped he might still have the tune.
But I figured I would ask around just in case, maybe I could compare tunes, check for difference, etc...
01-25-2015
i dont want to come in here and **** on your thread but you need to know that you cant just change the tune in the computer and gain boost which is what you sound like you want to do. it just doesnt work that way. also, i would steer you clear of wanting to upload someone elses blind tune to your car. if you want to turn up the boost you are going to need a boost controller of some sort, depending on the wastegate setup you may have to change the internal gate to an external, probably will need bigger injectors, tuning software and hardware, you will need to socket the ecu, and a wideband if you want to do it safely...
01-26-2015
Its all good. This is why i like ideas.
Yes i already have a manual boost controller and the necissairy parts to adjust the boost manually.
I know it sounds like i want to just drop a blind tune in. But i plan on testing and adjusting it somehow.
My problem is i cant find even the stock tune anywhere. I was hoping for something i could use. Or that would be useful.
Reason i was hoping for a tune that already does what i want to do is because it would be a close starting point.
01-26-2015
You might look into aem truboost controller
01-26-2015
have you checked moates.net?
also. the closest starting point you are going to find is a stock file. you never know what someone else has changed, why it was changed. i agree it would be a good thing to compare to but i wouldnt use it beyond that.
01-26-2015
As far as I know, he can't just use a boost controller to increase boost. There's a pressure sensor that will tell the computer to cut fuel/spark/open wastegate if the car begins to overboost. Changing the parameters in the tune would allow for a higher degree of boost...but regardless, the limiting factor will still probably end up being poor intake manifold gasket design since they like to blow out even at stock boost levels.
01-26-2015
isnt there a guy Kuntzie i believe has done a lot of work on his? made like 390 horsepower.
01-26-2015
Tunercats is all you will need. Buy a chip burner and a socket adapter for your ecu.
01-26-2015
correct, but how does he get the stock Bin file off the car?
01-26-2015
Your burner can read it or you can find/purchase it from tunercats.
01-26-2015
I didn't say it wasn't possible...just that it's difficult. And a lot of work/money required to get decent power versus a basically stock 3800 swap with a turbo kit to get to the same level seems a little counter productive to me.
01-26-2015
this is true but if everyone had a "something" 3800 swapped, it would be awfully hard to talk **** and rag on ppl.
01-26-2015
I'm not saying that. The 3.1 turbo has like zero aftermarket...so everything has to be custom.
01-26-2015
one off can be cool if you have the cash...
01-27-2015
I got a fix for the intake gaskets.
I can manually control he boost, but yes, it will cut off the fuel and spark if it goes to high.
I am looking into everyones suggestions now. I did try asking megasquirt, but that would cost me 800+ dollars and seems overboard.
Glad to know I can read the mapping off the chip.
Does this work on the stock 90 turbo grand prix chip as well? I can read the stock tune from it?
I was thinking of this module:
https://www.moates.net/apu1-autoprom...sion-p-54.html
It says it can read and burn through USB.
Will this work for me?
If so, now all I need is assistance with removing the EGR, adjusting for a 160 degree thermostat, and mapping for higher boost.
01-27-2015
yes the apu autoprom will work. if you wanted to go cheaper you could get a burn2 and an Aldu cable you would just loose the realtime emulation feature. so you couldnt realtime tune. basically you zif socket your ecu. throw a chip on the socket on the box and upload your tune. then you can realtime tune to the box. when you are done you burn the chip and stick it in the zif socket and you are done.
01-27-2015
I feel like that dude's power numbers are off, given the times it ran in the quarter.
But damn, the stock turbo is done at 11 psi. That's nuts.
01-28-2015
The srock boost is 11 PSI?
I find it hard to believe.
My car is one of the lucky ones with the bad gauge cluster. So i dont get any correct readings.
So real time tuning, i burn it then install. Then adjust tune through the OBD1 port under the dash?
Im not quite understanding that.
I will probably like the emulation because im new to this and i am assuming it will be easier because i can adjust it as i go along.
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