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Truckzilla46

Very Odd Datalog Now That I Can! :( Need Thoughts

Ok so I did some wot pulls and finally figured out how to get my boost factored in. I notice a high afr after a shift from 1st to second. So I hooked my boost up and went and did another run. Look at this log and see what you think. I am stumped! Car is running 10.7-10.9 except a few odd spikes. 

 

post-1904-0-03483200-1404077918_thumb.png

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The Throttle is shutting because you are approaching the rev limiter...FAST. You are also very close to TCM overspeed limp in at that point. A MTCM with stock shift points or a PTCM with raised over-speed rev limit would help you. I could let the rev limiter out a bit more in the tune to prevent throttle closure under that scenario.

Thanks

AJ

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The Throttle is shutting because you are approaching the rev limiter...FAST. You are also very close to TCM overspeed limp in at that point. A MTCM with stock shift points or a PTCM with raised over-speed rev limit would help you. I could let the rev limiter out a bit more in the tune to prevent throttle closure under that scenario.

Thanks

AJ

Sounds like I know what my next mod will be. Which is better? What shift point and rev limits should my engine need?

 

 

 

Srt5939

My nag1 is a shr Viking with fti 2800

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PTCM

 

Yes sir! that's what I am going to need next.  Was looking at eurocharged till I was able to get some advice from my magnum guru! Just need to figure out shiftpoints and such.

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What's of issue in the logs above, the stair stepping in the rpm ramps?

It's the blip with the throttle dropping and in return loosing power/boost/afr. The problem us the shift point is actually hitting rev limiter for a second. I thought it was mechanical issue at first.

You have a built motor, yes?

 

HS

Yes sir !

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It's the blip with the throttle dropping and in return loosing power/boost/afr. The problem us the shift point is actually hitting rev limiter for a second. I thought it was mechanical issue at first.

 

Yes sir !

 

Dont sweat the 12.0 AFR peak then, especially if it's momentary.  That's not ragged edge, especially with a built motor and proper fuel.

 

HS

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its actually a tcm issue. going into rev limit and slowing my car down :( Cant raise the rev limit because I am at limp modes door.


wonder how many tenths that's adding to my ets?

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Well my tcm will be here around Friday. Curious to see how much it shaves of my time from both fixing the issue and gain from tcm itself. I returned my tune to stock. Way I understand it that's the correct way to do it so you don't make a mistake of overwriting your new tcm if returning to stock form.

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