LS1TECH - Camaro and Firebird Forum Discussion

LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Need help!!!!!!

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Old Jun 28, 2015 | 10:24 AM
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Default Need help!!!!!!
On a 2007 Grand Prix does anyone know the best way to get to the tach signal I'm installing a msd window switch and it needs to know the rpm
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Old Jun 28, 2015 | 10:41 AM
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This may or may not be of some help. If not I would call MSD. Good luck

https://ls1tech.com/forums/nitrous-o...ow-switch.html

https://ls1tech.com/forums/nitrous-o...tall-help.html
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Old Jun 28, 2015 | 11:53 AM
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I have the instructions for the msd box itself im just having trouble finding the tach output wire on the car itself to tap into to let the msd work. I see alot of the f body guys saying it the white wire in the #10 slot of the red harness is ours the same wiring configuration as theirs
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Old Jun 28, 2015 | 11:59 AM
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Sorry, I have no info on that. Hopefully somebody chimes in. Post back your findings as well, with pics too if possible. And another video of that cam lol.
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Old Jun 28, 2015 | 01:59 PM
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Ill post some pics as soon as I put everything back together lol and a video I got a buddy coming over in a few hours ill see if he can help me find it
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Old Jun 28, 2015 | 02:54 PM
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Name: Screenshot_2015-06-28-15-38-08-1_zpsgoqbyk8y.png Views: 42 Size: 177.0 KB
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Old Jun 28, 2015 | 03:06 PM
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Good find!
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Old Jun 28, 2015 | 05:04 PM
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Old Jun 28, 2015 | 05:06 PM
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Thanks for the help guys!!!!
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Old Jun 28, 2015 | 05:18 PM
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Sounds really good.. You must not have the GM ignition recall yet, look at that hanging from the key switch lol .
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Old Jun 28, 2015 | 05:53 PM
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Tim don't spray till you get a dyno tune or aylt least a wide band so you know where your fueling is at
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Old Jun 28, 2015 | 06:09 PM
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Im not gonna spray yet I just wanted to get everything installed and tuned at once since its $550 for the dyno tune didnt wanna pay that twice
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Old Jun 28, 2015 | 06:41 PM
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That's why I learned how to tume...I'm just to cheap lol.
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Old Jun 28, 2015 | 06:43 PM
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How big of a shot btw
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Old Jun 28, 2015 | 08:53 PM
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Probably 75 shot
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Old Jul 1, 2015 | 06:08 AM
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Don't forget to swap out plugs, BR6EF should work for a 75shot. Are you running a progressive controller?
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Old Jul 1, 2015 | 10:37 PM
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Tes sir I got new plugs and wire being installed in the morning and then hopefully if everything gpes goes as planned will be bring it to get tuned
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Old Jul 2, 2015 | 08:51 AM
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Stick with tr6 for a small 75 shot. If you were spraying over 150 on a consistent basis then yea br6
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Old Jul 3, 2015 | 12:10 PM
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Originally Posted by 91parkave
Stick with tr6 for a small 75 shot. If you were spraying over 150 on a consistent basis then yea br6
I lost power on the dyno with them plugs, engine didn't like the projected tip and heat range for some reason, however everyone is running different setups.
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Old Jul 3, 2015 | 09:41 PM
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Originally Posted by Killerb
I lost power on the dyno with them plugs, engine didn't like the projected tip and heat range for some reason, however everyone is running different setups.
The heat range most likely, doesnt have anything to do with the tip. Just watch the plugs make sure they dont look like they are running too hot. Doubt you need a colder plug for a 75 shot.
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