What did you do to your OBS GMT400 Tahoe/Yukon Today?

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Gzes

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It was supposed to be nice and mine. Apperantly he doesn't have a word of mouth. Called him out on it an ruined his scheme
 

SunlitComet

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3.42 :) and no I did not lift. I am still working on bugs and stuff with the 0411 module and other areas of the electronics. But ever since I replaced the MAF and MAP because of skewed outputs readings it will red line and rev limit on its own and then immediately afterwards up-shift from 1 to 2 if wot. I don't have efilive yet but that glitch will get fixed. I still have other sensors i want to do that have not been put in yet. And want to re-verify everything is good before I have the pcm re-tuned for performance. In the meantime since the exhaust work mileage has been climbing back up out of the pit as well as power. The thing was just running screwy since I screwed around and put that ported throttle body on. It has been removed and the stock reinstalled. I might still cut the lip of the blade but not sure I want it ported anymore. I can do without a very minor launch lurch gain in order to save my seat rails from breaking. We shall see. Still always room for a Whipple when I can get one.
 
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noJeepshere

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Interesting, because it sounded like a standard transmission at the shift, engine cut out, change gears, back on the throttle. So you're still just getting everything worked out is all.

cent frum a smaert fone
 

SunlitComet

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yeah, because the tranny does not shift when it should it hits the rev limiter, injectors are cut off killing power temporarily, pcm see change in map and maf readings from cut-off and sees it as time to shift. Power comes back up before shift is complete hence you still here induction noise with injectors on. It then goes from there. When the tuning is done the various shift, fuel and ignition tables among other variables will be fixed. Will try to get a better video tho. I have a $1500 camera but no hard mount to set in the vehicle. Could have set it a bit better for low light auto-focus for moving objects but did not bother so it really look crappy. I will work on that. Just now getting into photography. Still want to get a few gopro's to simul-record suspension and vehicle in motion tho. Easier to mount I think. Will really see some vehicle action then but will have to wait for a bit longer.
 

_Dylan_

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About the same as mine, i'll have to take a video doing the same thing.

You have a lot more work done than I do. I haven't really done anything that would make a difference. I do have 3.73s though...

How much you wanna bet I get a p300 code at WOT on the 2-3 shift?
 
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SunlitComet

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If you are wot on a 2-3 shift I think the least of your worries are a p0300. I was still in 2nd when I was at 77+mph at 4800 rpm. Besides why would you expect to get the code anyway? You have engine issues?
 

SunlitComet

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Picked up a remaned hydro booster as the used one I had leaking piston seals and the the accumulator was no good. Bad weather will keep it from going in this weekend.IMGL8431.gif
 
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_Dylan_

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If you are wot on a 2-3 shift I think the least of your worries are a p0300. I was still in 2nd when I was at 77+mph at 4800 rpm. Besides why would you expect to get the code anyway? You have engine issues?

It only does it at WOT on the 2-3 shift. Almost always.

It's probably leaking, but it's not causing enough concern to change it yet...

I took a vid yesterday, my 25-75mph time (I didnt start from a stop) was about 2 seconds slower. I'll upload it next week when I get a chance.
Your truck is faster than it looked. Some 3.73s or 4.10s would do it some good. :D
 

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