gto tune ?s

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Dec 16, 2009 | 05:20 PM

66tomcat

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gto tune ?s

i have a 05 gto just boltons .
the car was running great (11.60 in the 1/4 mile )
i did a gear swap,to 3.91 gears.
now i cant get the converter to lock.

05 ls2 kooks headers , ported stock intake, 3600 stall, other drivetrain mods

i do have hp tuners . i did the gear swap (a complete rear swap)
with a harrop cover .

anyone have any ideas?

Dec 16, 2009 | 05:21 PM

66tomcat

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the original tune was just headers and a 2800 yank converter.
what has been added is the intake manifold and the bigger stall

Dec 16, 2009 | 05:38 PM

69LT1Bird

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From: Lapeer, MI

Post the tune file

Dec 16, 2009 | 06:23 PM

66tomcat

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i cant figure out how to post it , or even e mail it .
im just wanting to know what may be happening to cause it .

Dec 16, 2009 | 06:33 PM

69LT1Bird

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From: Lapeer, MI

Did you change the speedometer section in your tune for the gear ratio? Did you tell the system to auto scale the transmission tables?

Dec 16, 2009 | 07:24 PM

66tomcat

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i did the 3.91 gear ratio change , did not auto scale

Dec 16, 2009 | 07:34 PM

69LT1Bird

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From: Lapeer, MI

If you didn't auto scale, the shift points do not get moved automatically in relation to the new axle ratio or tire size change. It changes the shift MPH settings in a few tables. You may want to try that.

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Dec 16, 2009 | 07:47 PM

66tomcat

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ok re wrote the tune with auto scale and found the tcc auto .

Dec 16, 2009 | 07:48 PM

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69LT1Bird

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From: Lapeer, MI

If you are talking about the Shift Lock, no. That keeps the torque converter locked during shifts. Not usually a good idea.

Dec 16, 2009 | 07:50 PM

#11

66tomcat

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damn i was hoping that was it .
could the wheel speed sensors have anything to do with this ?

Dec 16, 2009 | 07:55 PM

#12

69LT1Bird

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From: Lapeer, MI

There are a few things that can. Spark knock will keep the TCC from engaging, the MAF can mess with the trans shifts and pressure. I am sure a speed sensor will also do this.

Dec 16, 2009 | 08:01 PM

#13

66tomcat

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the only thing that changed was the rear diff
the car was raced a month ago, ran great .
even had the converter locking at 100mph .

Dec 16, 2009 | 08:02 PM

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66tomcat

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btw thanks for the help

Dec 16, 2009 | 08:11 PM

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02 BLK WS6

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From: Glen Carbon, IL

Max out your misfire tables and see if it'll lock.

Dec 16, 2009 | 08:23 PM

#16

66tomcat

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i have been getting a random misfire code , where is that ?
and i have been getting that code for a while ,when the motor is cold but only once in awhile .

Dec 16, 2009 | 08:45 PM

#17

69LT1Bird

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From: Lapeer, MI

Engine Diagnostics | Misfire

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gto tune ?s

gto tune ?s

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