Quote:
Originally Posted by Higgs Boson
Awesome.
If you want to modify your car, you need to tune it to do it RIGHT. Everything else doesn't even matter. A car runs correctly at a certain AFR depending on cruise vs WOT, etc and without a tune you alter that mixture balance. Will your car "run" without a tune? Sure. Will it be right? No. If you are installing long tube headers you NEED a tune. If you are installing shorties, you can drive it without it but it will be off.
If you don't want to mess with your warranty, paint your center console yellow. Put on a bumper sticker. Swap out your grill.
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Maybe I should elaborate further. I know all about theory, AFR, mixtures, and balance. I'm no noob to modding and racing cars. I think cosmetic mods are a waste of money.
However, I modded late model Mustangs. I had great success with bolt-on mods
without having to chip, or tune. Ford's PCMs allowed a lot of leeway as if they expected you to add headers, CAI, etc. The factory-programmed PCM did just fine and the AFM was perfect without a tune. Also, Ford didn't automatically void your warranty with these mods.
I don't know enough about these GM ECMs. I'm trying to educate myself on why you say I NEED a tune with long tubes. You didn't elaborate, but it would be appreciated if you would.