Thread: Newbie type 2001 GTP TUNE change advice wanted/needed

Originally Posted by Reptile

Agreed. I wasn't trying to argue with you, you were right....but these are the things that people tend to overlook when looking for advice.

This here, is one of the reasons why some people tend to zero out the entire time table though 20 seconds.
Nobody in their right mind would stand in these cars for that long to begin with, if they want to keep their 4th gear.
But who am I to give advice? Stock tunes are good for 11 seconds in some cars. :P

Huh, that's odd, people can debate about tuning in a civilized manner? I thought everything on GPF had to devolve into a playground pissing match.

Good on you guys!

Originally Posted by GTP131

Huh, that's odd, people can debate about tuning in a civilized manner? I thought everything on GPF had to devolve into a playground pissing match.

Good on you guys!

lol this^^^ :-)

Thanks for the reply. Not sure where you got 116 octane from, but it wasn't me, although I did mention a splash of 110 for MY car.

Definitely not draining the tank, but I am going to have him run it low, then put some 100 octane unleaded in the GTP...probably 5 gallons and even if it has 2 gallons of 93 in the tank, it'll still average out to 98 octane which should be golden. He gets very little KR, even in the summer, with pump 93. We just started with the "winter blend" gas, so I'm not sure what that will do???

I haven't heard anymore pulley talk, so I'll just datalog and check for KR and probably just add a couple degrees of timing....or not.

Installing a "happy knob" with a tune that changes your IAT tables might be just what the doctor ordered. It'll let you adjust timing on the fly without re-flashing. Food for thought.

Originally Posted by GTP131

Installing a "happy knob" with a tune that changes your IAT tables might be just what the doctor ordered. It'll let you adjust timing on the fly without re-flashing. Food for thought.

I wan't to know how to do this

Originally Posted by SnowTh1ef

I wan't to know how to do this

I'm sure there are write-ups floating around... it's actually pretty simple. You usually have an IAT sensor that changes timing slightly based on incoming air temperature. Basically, the IAT is just a resistor that naturally changes resistance with air temperature.

So, instead of using the IAT sensor, you run the wires to a potentiometer with close to the same resistance range as the IAT (this is a knob that changes resistance based on how far you turn it clockwise or counter-clockwise. So basically you're tricking the computer into thinking the temperature outside is warmer or colder based on where you have the knob turned.

Normally, the computer will only change timing a little bit based on temperature... so you change the IAT adder table for timing to be more drastic. For example, set your base tune (without IAT adder) to 15* of timing at WOT. Then scale your IAT adder table between +0 and +5 (or whatever range you need) degrees based on temperature.

So, then you go to the street/track/whatever with the knob set to give +0 timing. Do a run, and check for KR. If no KR, turn the knob enough to give you 1 more degree of timing... and so forth, until you knock, then you can turn the knob back.

I'm sure someone else can describe it more accurately and give more precise instructions, but that's the gist of it.

That's essentially how mine works. Pretty good explanation.

Originally Posted by PeezDaddy

He won't be whooping his Dad just yet, but I'm sure he'll have some fun.

Me:
http://youtu.be/vvO1BnEbrkE

Him, before we fixed the coupler and MAF meter:
http://youtu.be/lC8pW8WVQhM

Man, that's a bad ass Chevelle you have there. You left your component in the dust....Lol!

As for your son, what was his time in that race? It was a little fuzzy and hard to see his time.

Originally Posted by Flip97GTP

Man, that's a bad ass Chevelle you have there. You left your component in the dust....Lol!

As for your son, what was his time in that race? It was a little fuzzy and hard to see his time.

Thank you. That was indeed a 14.89...mph? don't know...

Originally Posted by SgtMarshal

looked like a 14.89 to me, but it was blurry.

Just to update...our schedules never did line up so all I did was add 3 gallons of 107 octane to his car and he got a new best...

14.55, but I'd have to check with him for the MPH. He was ok with that since only mod is a aluminum air tube with cone filter that ends up where stock airbox was.

Here's an in-car video: (actually was right behind me)

http://youtu.be/WnCKofPEhYM

and here's an in-car of one of my runs, an 11.34@117, best for the day was an 11.31@117, 1.55 sixty foot:

http://youtu.be/KCz7q06gj5M