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Old 06-21-2020, 12:48 AM   #1
Evil Rocky
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Was turbo tuned and now built engine and question on tune

So I had a stock FA20 and was turbo for about 13 months and now going built engine. I was on a conservative tune (9psi and doing 285whp on 93 and e85 10psi 315whp) I am swapping to same compression engine just a closed deck outfront motorsports, titanium retainers and valves only major change is to fluidamper and the rest just upgraded cooling mods and just new timing chains, tensioner, coilpacks and spark plugs.

I will break in engine soon and was wondering if need a whole new tune or can I break in with current tune and then once broken in get a full re-tune to go with built engine.

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Old 06-21-2020, 12:49 AM   #2
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Should probably ask your tuner this.


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Old 06-21-2020, 05:52 AM   #3
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use it

just use the most conservative of the 4 maps you have from your tune
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Old 06-21-2020, 05:59 PM   #4
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Quote:
Originally Posted by Drifter X View Post
Should probably ask your tuner this.


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I emailed my tuner and no reply in 4 days. I am just asking here since hope in a week will have everything complete and want to start the break in.
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Old 06-21-2020, 06:02 PM   #5
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Ah shucks that sucks. Iíd go with the post above. Use the most conservative map. Iím guess since the compression ratio is the same there shouldnít be much of a difference but Iím no tuner. Good luck man.


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Old 06-21-2020, 07:51 PM   #6
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Do you have control over your right foot?


Drive it.
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Old 06-21-2020, 07:56 PM   #7
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Quote:
Originally Posted by Evil Rocky View Post
I emailed my tuner and no reply in 4 days. I am just asking here since hope in a week will have everything complete and want to start the break in.
after no response for 8 business days, i'd find a different tuner.
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Old 06-21-2020, 10:06 PM   #8
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If there's something amiss with the installation you may not know for some time, whereas if someone we're watching your datalogs with intent to re-tune, they would catch it.

It SHOULD be ok for break in, but there's no way to know without datalogging. Fight for your tuner's attention, it could be what saves this engine in the rare event that something IS wrong and you can't tell (fuel trims way lean due to slight exhaust leak at header for example)
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Old 06-21-2020, 11:26 PM   #9
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I am going to wait for his reply for another day or two and see what happens. If don’t hear back I am just going to go to local tuner.
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Old 06-22-2020, 05:45 AM   #10
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the answer will be that you can drive
you haven t change anything technically
and if you want you xan post a log here you have to do it anyway, just drive gently
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