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Which actuator on a stg 3 MSD ALS chip?

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Old 06-08-2010, 11:18 PM
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Mr C
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Default Which actuator on a stg 3 MSD ALS chip?

I have a stg 3. 330BHP 2wd sapphire using a 500 cooler, 803s and a T34 .63 Mar- m 247 shaft, which actuator would I be best to use in this, the car drives best around 5-7200 RPM limiter and I like power to be consistent, ideally the same power lower down to match the top end, so am I best off with a -34 or -31 actuator to achieve consistent power?
What do you run? I will be mostly on track and drifting
Old 07-08-2010, 06:48 AM
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KSA-Cossie
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-34 on mine m8.
Old 07-08-2010, 07:06 PM
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Mr C
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Thankyou, how does the power come in and I'm guessing it holds the boost well at that?

Anybody else using an actuator?
Old 07-08-2010, 07:11 PM
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LHD220Turbo
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personally i'd ditch the greens and get greys or siemens blacks with a new chip; see 380-400hp with that spec, might as well get the most out of it

incidentally i had -31 actuator on mine

Last edited by LHD220Turbo; 07-08-2010 at 08:16 PM.
Old 07-08-2010, 07:22 PM
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graham c
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yep am going blacks woz at msd talking to kenny yesterday
Old 07-08-2010, 09:39 PM
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Mr C
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Ok blacks on my shopping list, can my existing chip run them or be re written? How does the -31 differ in use from a -34 please if both have been used they both must work but what's the difference in power delivery etc?
Old 07-08-2010, 10:37 PM
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LHD220Turbo
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Originally Posted by Mr C
Ok blacks on my shopping list, can my existing chip run them or be re written? How does the -31 differ in use from a -34 please if both have been used they both must work but what's the difference in power delivery etc?
you'll need a new chip if you want to use new injectors, but if you havent got the money at the mo, greens will be ok - you just wont get the best out of the turbo

the difference between the 2 actuators is the lift pressure, 8 psi for -31 and 14 psi for -34

heres a good article https://passionford.com/forum/techni...ifference.html
Old 08-08-2010, 02:04 AM
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graham c
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am going to run air to airs as well
Old 08-08-2010, 07:04 PM
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Mr C
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Brilliant thanks, a -34 then and I'm eventually having air injector and blacks to match, what are the part numbers for siemens injectors for upto 380 bhp as mentioned above? That lot will be plenty for a STD box etc
Old 08-08-2010, 07:06 PM
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3102 is siemens blacks 55lb
Old 08-08-2010, 08:11 PM
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MAD Ade
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Why not ask Stu at MSD?
Old 09-08-2010, 05:41 AM
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pete mcrash
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had both and i like my car much better on a -31
Old 09-08-2010, 06:12 AM
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Always ran a -34 on the t34 LOL

Pete ure a gay boy thats why u like a -31 - nice slow progression on entry
Old 10-08-2010, 03:26 PM
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Originally Posted by Dingy
Always ran a -34 on the t34 LOL

Pete ure a gay boy thats why u like a -31 - nice slow progression on entry
....stevie babes ur getting me horned up.....
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