MSPNP MSPNP specific Megasquirt related discussion.

A few question about Launch Control

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Old 09-12-2009, 08:10 PM
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Default A few question about Launch Control

Hello Everyone.
I got a few questions about launch control. I just activated launch control in MSPnP. I did it with a separate button no the clutch switch because i have a clutch switch bypass.

I did not change any values and left them default. I just changed the fuel cut to spark cut. I just think it sound cooler. I should say i dont have a cat.

So my question is very generic, how bad it is for the engine/ turbo to use launch control? I will not use it for launching at the moment (kind of defeats the purpose of having LC) because i have a stock rear end and it will blow up soon even without LC. So i really just wanted to have LC so i can tell people i have a miata with LC and be able to prove it.


I just reread what i wrote and i totally sound like a worthless , which in general is true.
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Old 09-12-2009, 11:18 PM
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I am currently in the same boat with the rear end, but I have a question.
If you have the clutch switch bypass doesn't that make it where you can start without depressing the clutch and not effect the second clutch switch, the one you would use for launch control?

As for the LC with spark cut damaging anything.... be careful of your muffler I kinda blew mine open and now have straight pipes.
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Old 09-12-2009, 11:27 PM
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Wow, is that the stock muffler?
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Old 09-12-2009, 11:33 PM
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damn thats crazy. I have a magnaflow so i hope it does not blow up. I am more worried about the turbo and the engine itself.
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Old 09-23-2009, 05:10 PM
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What kinda settings did yall set it at?
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Old 12-16-2009, 10:10 PM
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Bump. I want to know what settings can be harmful. I want to set this up but I dont trust myself with tuning yet. I'm putting in a remote button also because (correct me if i'm wrong) it will interfere with revmatching for downshifting. I figure it could help a little in autocross.
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Old 12-16-2009, 10:12 PM
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I set mine at what ever the default setting are. Plus i set mine to to do spark cut instead of fuel cut so i get a nice explosion when i do the lunch control.
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Old 12-16-2009, 10:31 PM
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ok. i'm looking at the launch control menu. everything is set to 0 except "Retard to: (Deg)" = -10 which i'm not allowed to change cus i cant click in the box. "Enable Launch when TPS above (Raw" and "Launch Control Hard Rev Limit (rpm)" are the only boxes i can change numbers in. not sure what to put for the first but second is whatever rpm to lauch at. also, when choosing limmiter type, i think it was hustler and braineack told me spark and fuel cut was best so i'll go with that but what does "Cut 'n' sparks out of BASE NUMBER" mean?
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Old 12-16-2009, 11:07 PM
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ill check tomorrow what i have. The car totally gutted right now so i will need to pull the map from my lap top and see.
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Old 12-19-2009, 03:08 AM
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heh.

-Have fun with LC and no clutch switch. You want it to turn OFF when you let the clutch out. Your clutch bypass won't affect it at all - it uses the other clutch switch, the one that turns your cruise control off when you step on the clutch a little.

-Spark-only is a great way to burn up turbos. Unless you're on 10.5" slicks and can actually use 13psi off the line, don't be a ricer and leave the fuel cut on. I made 4psi on spark/fuel cut and it would just cook the tires anyway.

-First, you'll break your rear end with LC. Then, you'll break your 5-speed with FFS. Just so you know. FFS is a dirty amount of fun, though.
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Old 12-19-2009, 10:07 PM
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Bit of a newb question, but FFS = Flat Foot Shifting, correct?
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Old 12-20-2009, 04:23 AM
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Originally Posted by Pusha
Bit of a newb question, but FFS = Flat Foot Shifting, correct?
Yeah flat foot ****.

Man the wiring has got me all fucked up. IDK seems like I'm the only one. More reading I guess.
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Old 12-20-2009, 12:22 PM
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Bit of a newb question, but FFS = Flat Foot Shifting, correct?
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i was gonna ask the same thing. took me a minute to figure out
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Old 01-01-2010, 06:56 PM
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So i found my tuning cable and want to activate LC but the first two of the four fields are shaded and i cant click in them to change values. anyone know whats going on?
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