Too Lean??
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Joined: Mar 2012
Posts: 55
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From: Ponca City Oklahoma
Too Lean??
Recently purchased a stock 2000 Vert/6 spd with 86k on the odo. Just installed cat back B&B exhaust. Getting ready to install a cold air box or something that will get more air in it.
After doing these 2 things, will I be running the car too lean? I have looked at purchasing a tuner that would correct this problem but I am not wanting to change out the thermostate or have to run premium fuel all the time. I know I should be running premium all the time now but it runs just fine now without any pinging.
Does someone make a tuner that can adjust the A/F ratios without having to change the thermostate or run premium?
Thanks in advance.
Terry
After doing these 2 things, will I be running the car too lean? I have looked at purchasing a tuner that would correct this problem but I am not wanting to change out the thermostate or have to run premium fuel all the time. I know I should be running premium all the time now but it runs just fine now without any pinging.
Does someone make a tuner that can adjust the A/F ratios without having to change the thermostate or run premium?
Thanks in advance.
Terry
Tech Contributor
Joined: Jan 2007
Posts: 19,246
Likes: 1,095
From: Dyer, IN
Those are two of the most common mod....no tuning required. If you start running lean(for whatever reason)....the PCM will let you know.
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
So you want to install a cold air box for a few more horsepower, but lose even more horsepower by running on 87 octane? Premium gas is 30 cents more a gallon or $5.60 a tank more than 87 octane.. These engines were designed to run on premium fuel
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Joined: Jan 2012
Posts: 216
Likes: 1
From: Honolulu Hawaii
Yep if you run 87 octane, your pcm will kick you into the low octane table, pull timing and your car will be about a 1/2 second or more slower in the quarter mile. I have personally tested this at the track. And on a scanner. Car also just feels sluggish