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Drilling TB blade in order to increase airflow at idle?????

   
Old 02-21-2018, 11:41 AM
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These days if you bring up drilling a hole in a drive by wire throttle, you're just asking to get yourself (or your tooner) bashed on. You already have a hole in your throttle body; it's 90mm wide and the size is continuously variable.
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Old 02-21-2018, 04:27 PM
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Originally Posted by smokeshow
These days if you bring up drilling a hole in a drive by wire throttle, you're just asking to get yourself (or your tooner) bashed on. You already have a hole in your throttle body; it's 90mm wide and the size is continuously variable.

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Old 02-21-2018, 05:30 PM
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Originally Posted by Kws82590


Lol in all honesty he has tuned my truck more times then i can count and has always done a great job
Well then maybe this simple task put him above his comfort zone. No reason to drill on your setup.
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Old 02-26-2018, 10:52 AM
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Point your tuner to this efi live thread...seems like you may need to drill the TB on big n/a builds but this build seems fairly mild.

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Old 02-26-2018, 12:59 PM
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On DBC, I've had to drill larger holes. Especially on those cheap aftermarket TBs.

On the DBW, there are a few idle effective area settings that need to be increased to allow the blade to open more at idle OR fudge the scalar (smaller).

I agree with everyone else though. no reason to drill a hole in a DBW TB.
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Old 02-26-2018, 01:35 PM
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Originally Posted by Kws82590
has anyone ever had to or heard of having to drill a hole in there TB in order to increase airflow so truck will idle correctly after installing a turbo and cam?
What exactly is your truck doing? Surging? Stalling? Takes a long time to get down to the desired idle rpm?
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Old 02-27-2018, 11:34 AM
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Originally Posted by smokeshow
These days if you bring up drilling a hole in a drive by wire throttle, you're just asking to get yourself (or your tooner) bashed on. You already have a hole in your throttle body; it's 90mm wide and the size is continuously variable.
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Old 02-27-2018, 11:42 AM
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Originally Posted by KHester84
What exactly is your truck doing? Surging? Stalling? Takes a long time to get down to the desired idle rpm?
only a issue during start up it will stumble and act like it’s gonna stall but after a couple seconds it clears right up and is perfectly fine after that
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Old 02-27-2018, 03:04 PM
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Originally Posted by Kws82590


only a issue during start up it will stumble and act like it’s gonna stall but after a couple seconds it clears right up and is perfectly fine after that
Has he tuned running airflow tables? What’s timing doing when this happens?

I’ve tuned large cam stroker motors that started and idled fine with no hole.
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Old 02-27-2018, 03:11 PM
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Originally Posted by 03sierraslt
Has he tuned running airflow tables? What’s timing doing when this happens?

I’ve tuned large cam stroker motors that started and idled fine with no hole.
i will have to ask him he says he thinks it’s somethjng todo with a CAT check???
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