tsarp90

How do I check if my car is already tuned or not? I just bought the car a couple months ago and because of the other thread i posted I think my car might already be tuned but im not sure. what led me to think this was that while accelerating i hear a pinging of knocking noise at about 3k. but when i run a higher octane i don't notice it. it might still be there but i just can't hear it.

Modular_Madness96

only way i know of is to hook it up to the scanner at a dealership.

teej281

Some cars just dont like crappy low octane gas. My 98 only ran on 93 octane gas. Wasnt tuned or anything. It just didnt like the crappy gas.

Grabber

You can take it to a Dyno shop, and they will hook it up for a small fee, and check the A/F, and see if it's running lean, rich, etc.

CAMDUP

..........^^^^ +1 ^^^^..........

Jbauer

dont overlook the obvious..you may just have something in **** poor condition. run some in injector cleaner, use some seafoam, change the spark plugs, (read them while your at it) change the fuel filter and see what happens.

tsarp90

alright thanks i'll try it all and post something when i find something that works.