So my 04 GT now has about 32,500mi on it. Bought it last may with 26,800. I have progressively added mods and as of now what I have is in my sig. I do go to the track pretty often. So far all I've done is kept up to date with my oil change. I have also changed my tranny fluid about 3-4k ago and my rear end fluid about 2k ago.

Nowadays it feels like things are wearing down so i'm wondering what basic tune ups I should do? my K&N filter was put in about 4k ago so i'm gonna get a recharge kit for that soon.


Thanks,
Brandon

 

Maintenance I mean

 

i don't think anything has worn down...you are just way too use to that power level. Time for a supercharger

But on a more serious note you could look into changing your fuel filter, rotate the tires if it hasn't been done recently, if you still have an 87 octane tune you could run 91 and then make a tune for that. If gas gets too pricey again you can always switch the tunes back.

 

Are you having any driveability issues? You probably aren't due yet, but new plugs and wires never hurt anyone and you could always do a fuel injection service. Better to get some of that stuff before it creates a problem.

I also suggested just taking an afternoon and sliding around under your vehicle on a creeper. Check ujoints and steering components, make sure all of your suspension components are tight, etc.

 

The price difference between 87, 91, and 93 octane has been fixed at 10¢ to 15¢ a gallon, at each step, for 20 years. So, it doesn't matter if gas is $2.00 or $4.00 (or $100) a gallon, it will still cost $3.00 to $4.50 a tank more for 93 vs. 87.

Because they stick to this odd fixed price differential (I did see a few stations at a 20¢ step when gas was way up), as a percentage the difference gets smaller as the price per gallon goes up. At $2.00/gal for 87 and $2.30 for 93 the difference is 15%; at $4.00 for 87 and $4.30 for 93 it's only 7.5% more.

 

That is good information, but if it gets more expensive again, most people will want to save however they can. That 30cent difference (and if tuned aggressively, decreased gas mileage) can add up when people really need the money. that is all I was saying.

 

In my case, the more aggressive 93 tune got me increased gas mileage.....plus the benefits of the better additive package in the premium 93 octane fuel. My car seems to like Shell 93 .

 

good to know, I have only heard of that a few times. I suppose it is all in the tune/tuner.

 

Thanks for the replies guys. Yeah I was thinking maybe I just got used to the power (and I hope so). I still remember the day I first tried stepping on it after I bought my car and it was 100% stock, I was actually scared of the power lol.

I can't rotate the tires because I have stock 17X8 bullitts in the front and 17X9 bullitts at the back with 275 DR's. But the thread is still very good and my rear wheel/tire combo are relatively new.

I'm not having any drivibility issues but I think i'll do the fuel filter change soon. I have a Sniper tuner and I tuned my for 91. I always added 1 degree of timing above that but yesterday I put another degree and selected the option for my new X pipe. I felt a small difference but I don't know if it's just in my head.

By the way Cliffyk, I've been meaning to ask you: If I keep advancing my timing, I know I have to watch for pinging. But is pinging something that will either happen loud or not happen at all? What I mean is, is there a such thing as pinging a little bit or major pinging?

Oh and another thing, I know you said that the PT and FT adjustments for increments of PT and FT fuel is not small enough to take out some fuel at WOT (which you said we all run rich) but what about the high/mid/low RPM fuel? I was looking through the manual and it said something like "For instance, if your AFR is 11.4 and your desiered AFR is 11.9, simply add +4 to the high RPM spark and that will bring your AFR to that level."

Thanks,,
Brandon