dsh1106
Member
Both vehicles are stock.
2017 Yukon vs 2017 Tahoe
- Thread starter dsh1106
- Start date
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dsh1106
Member
Yes - Both are six speed transmissions.
dsh1106
Member
Cleaned the MAF sensor and looked at the throttle body and it was "clean" a small amount of discoloration, but nothing grungy.
Didn't seem to help.
BlaineBug
Full Access Member
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I think the only way to know for sure would be if I drove it and it's unlikely that is going to happen based on our locations.
WillCO
Full Access Member
Throttle programming can have a large perceived effect on performance. Even though the underlying power may be the same, if one truck's throttle is mapped differently than another's a given amount of pedal movement will create more output.
There could be some tolerance differences between any two parts orders on throttles, especially if they come from different suppliers, which is probably unknowable. That's my guess, along with something having happened to the Tahoe along the way that affected its juice. Maybe fuel quality.
It's much less likely IMO/IME that trucks are coming off the same assembly line using the same parts delivering varying levels of engine power. The manufacturing tolerances are simply too tight to allow that.
There could be some tolerance differences between any two parts orders on throttles, especially if they come from different suppliers, which is probably unknowable. That's my guess, along with something having happened to the Tahoe along the way that affected its juice. Maybe fuel quality.
It's much less likely IMO/IME that trucks are coming off the same assembly line using the same parts delivering varying levels of engine power. The manufacturing tolerances are simply too tight to allow that.
sealandsky
Full Access Member
It's going to cost you some $$, but it may prove enlightening if you took both to a shop with a dyno and compared the dyno results against each other. You may see that the ECM's are tuned differently (and maybe be able to improve both with some tweaking).
Bob2C
Full Access Member
Mine has the max tow package with 3.42 gears and it felt sluggish as well. Got it tuned. Wow what difference.
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WillCO
Full Access Member
Agree, but I wonder if ECM differences would show up on a dyno. Unless I'm reading it wrong, max power output would be the same, just a different amount of throttle engagement to get there.
dsh1106
Member
Well I took the Tahoe to the dealer and head them run a diagnostics test for throttle response,shifting, fuelling, and AFM, to my surprise, everything is operating properly, imagine that.
I just ordered the intune3, I guess we will see what sort of crap I can get into .....
Scott
I just ordered the intune3, I guess we will see what sort of crap I can get into .....
Scott
