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240sx lq9 swap issues, won't rev

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Old 10-22-2013, 06:43 AM
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Default 240sx lq9 swap issues, won't rev

Guys can you please help my friend figure out what is going on before he scraps this thing, here is the set up
06 lq9(24x reluctor ring)
06 gto 6spd
06 chevy truck ecm
harness is a truck harness with ls2 plugs or a ls2 harness with with blue/green ecm connectors how ever you want to phrase it
crank sensor is down by the starter
He is running Drive by wire
04 ctsv pedals and tac and a ls2 throttle body

The car starts and idles but will not rev past 2k, no codes are thrown

o car is sd tune if that helps
Old 10-22-2013, 06:54 AM
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Post the tune.
Check for compatibility w/ the Caddy pedal/TCM.
Old 10-22-2013, 10:15 AM
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The pedal, throttle body and PCM/ECM absolutely HAS to match. Can't mix that stuff up. Had one customer put a Vette TB on his DBW truck, and past 1/2 down on the pedal the TB would go back closed. Why not use a cable?
Old 10-22-2013, 02:24 PM
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he will need an x-link for the ls2 TB to work work with a truck OS and truck pedal.
Old 10-23-2013, 09:29 AM
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thanks guys, I have tried and tried to get him to go cable and he his stuck on dbw, no clue why. Maybe this will help him make the switch.
Old 10-23-2013, 10:19 AM
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Originally Posted by 01boydws6
thanks guys, I have tried and tried to get him to go cable and he his stuck on dbw, no clue why. Maybe this will help him make the switch.
Nothing wrong with DBW its clean in the engine bay and easier to tune in my opinion. He just didnt research the ssetup correctly or got bad advice on what to use.
Old 10-23-2013, 10:34 AM
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Both are easy to tune.

You can do what you want to the throttle control parameters, but you can't always make the guy happy with his quick throttle response. Depends on driving habits, and what they are expecting. The "DBW" deal does not move the throttle blade as fast as you can move it with your foot. Most people don't notice that.

You have to have the correct parts combination. It ain't 1955 anymore.
Old 11-12-2013, 07:10 PM
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Thanks, Evan and everyone else for the info. Ok so I was out looking at my tb plug and noticed that there was something funny going on. First I was think, my harness shouldn't just plug right into a ls2/ls3 throttle body. Well after checking out the wires it looks like someone has made a 6 pin connector fit by cutting one wire short and running it back into the loom and then doubling up another wire into one of the holes on the 6 pin connector. So I suppose I can purchase a 8 pin connector and rewire it in then get the x link to take care of one problem.

So bc I have a truck ECM I have to run the truck pedal and tac? This will cause a little issue bc the reason I went with the ctsv pedal/tac was bc the dang truck pedal is a monster! Pedal length and mounting bracket size.



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