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tuning a turbo build

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Old Jun 23, 2011 | 11:00 PM
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Default tuning a turbo build

How much tuning must be done after a turbo setup has been put into a rig?
 
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Old Jul 1, 2011 | 04:07 PM
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anyone?
 
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Old Jul 1, 2011 | 04:14 PM
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You need at least a 2 bar MAP sensor. (as you will be running greater than atmospheric pressure.....) how much boost you decide to run will determine if you need a 3 bar sensor. (greater than 14 lbs boost?)

You will need larger injectors, to supply additional fuel for the turbo..... Or, some variety of aftermarket fuel management system. (tuning is cheaper I think.... still need the injectors though.)

You will need a wideband O2 sensor, and the ability to do some data logging to get the tune really dialed in. (laptop, 40 bucks for a cable, and free software....)

Might want to email/call Hemifever, and have a chat with him, for exactly what he would need to write you a good tune.
 
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Old Jul 1, 2011 | 07:26 PM
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What size injectors? I've heard 42lb?
 
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Old Jul 1, 2011 | 07:27 PM
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Not sure on that....... I haven't done this particular trick.
 
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Old Jul 1, 2011 | 08:55 PM
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If you want to tune with SCT, you will need 39-42lb injectors and a 2 bar MAP. You can also use an FMU for more fuel (with stock injectors) and a BTM to retard timing, FMUs are a fairly crude way of doing it. You can also go with some sort of standalone computer like I did (I still use a BTM to retard timing), this will also require 39-42lb injectors, the computer itself is tuned with a laptop.

You need a wideband no matter what.
 
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Old Jul 1, 2011 | 08:57 PM
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Originally Posted by Buck Slayer
How much tuning must be done after a turbo setup has been put into a rig?
As much as it takes....?
 
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Old Jul 1, 2011 | 10:37 PM
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Originally Posted by Hahns5.2
If you want to tune with SCT, you will need 39-42lb injectors and a 2 bar MAP. You can also use an FMU for more fuel (with stock injectors) and a BTM to retard timing, FMUs are a fairly crude way of doing it. You can also go with some sort of standalone computer like I did (I still use a BTM to retard timing), this will also require 39-42lb injectors, the computer itself is tuned with a laptop.

You need a wideband no matter what.
So would you say the bigger injectors with an sct tune and BTM is the best way to go?
 
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Old Jul 1, 2011 | 11:13 PM
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Originally Posted by Buck Slayer
So would you say the bigger injectors with an sct tune and BTM is the best way to go?
No need for a BTM with SCT, the SCT tune will take care of the timing.
 
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Old Jul 2, 2011 | 12:09 AM
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Well which is better? And which is cheaper? The sct and bigger injectors, or the FMU and BTM, or the standalone?
 
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