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Discussion Starter #1
Hey guys, as you all may know there are throttle body upgrades available for 9th Gen Si's however there is very little information available on how to tune for it. We decided to provide settings that we found to work extremely well on our shop car, in order to calibrate for the SiriMoto Big Bore Throttle Body Kit.

These settings may not be 100% perfect for your car, but will certainly be a good starting point and should immediately provide excellent throttle-response/idle characteristics. We found that the throttle response is in some ways better than a factory setting with the original Throttle Body, especially for performance driving and heel-toe downshifting.

1. Starting with the Throttle Flow vs Opening table, we went ahead and changed all of the Flow (l/min) values to what we have noted bellow (keep in mind, these are the optimal settings that worked on our car but they may vary car to car):

T Flow vs Opening.png

Changing these values will help the ECU understand what to expect at low engine speeds and helps learn idle much faster when a vehicle is reflashed or reset.

2. The second thing we changed really improved low speed driveability (stop-and-go traffic driving) and allowed for more precise control of engine speed when heel-toe down shifting. It also helped for performance driving when you need to feather the throttle to get around corners, without upsetting the chassis with abrupt throttle inputs:

TPlate Normal.png

What we are essentially doing with TPlate Normal tables is reduce low throttle sensitivity, so that you don't get a jerky feel when coming on-and-off the throttle.

I hope this helps people who are considering the upgrade, but are turned off by the fact that not all engine tuners would know how to calibrate for this.

30096_2602___SM-HC12-ZDX-TB-KIT2.jpg

For more details on the SiriMoto throttle body upgrade kit or to place an order, check out our website:

SiriMoto OEM Big Bore Throttle Body Upgrade Kit 15 14 13 Honda Civic

We also do sell the Adapter Plate on it's own, if you want to use your own ZDX/J37 style throttle body.
 

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Awesome stuff! I wish I knew half of what you're talking about but it sounds good. I need to find a good resource to understand how tuning works and get to know hondata/flashpro better.
 

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Discussion Starter #4
@vitviper can you comment on this kit as to whether it is a benefit or not?
The horsepower gains will vary a lot depending on your setup. In general, this kit is most beneficial if you have a fairly built NA motor with full bolt-ons or forced induction (turbo, supercharger).
 
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