figures the check engine light comes on and the mpg goes up, lol actually hit 9mpg tonight
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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Haha, bad cat and it just keeps going up
wjburken
Supporting Member
That's great news!
What are you going to do with all that gas money you will be saving?
avalonandl
Full Access Member
9.5 mpg
You hit the jackpot.....LOL
You hit the jackpot.....LOL
lol, it hit 9.6 now, I figure it must be in some default running mode since it is getting a bad cat signal, I wonder what I will get after the cat's get done later today it's been sitting at 8/8.2 for the last 2 months at least, then it was on 10/10.2 for the last 2yrs
new cat's are on, I figured the 3-way temp would go down but it's staying about the same 1600 deg on the hwy, i guess i'll have to wait and see what the mpg does it's still hanging around 9.5 now, better than 8 anyway.
avalonandl
Full Access Member
Are you getting those temps from a tech 2 ?
If the temps are that high it should cut back on fuel pulse.
If the temps are that high it should cut back on fuel pulse.
ibfreeman88
Full Access Member
ya from the tech2 twc (3way), how could I change the fuel pulse? are you talking about the fuel trims? those are practically on 0
iamdub
Full Access Member
Turning up the boost? What PSI and HP/TQ you at now?
