Modifying the stock Throttle body for more air flow

**beeza** · 28-04-2010 02:09 PM

Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!

Aim: To 'open up' the OEM Throttle body (TB) to promote more air flow.

Since the tps will be removed for this mod,U should calibrate it when U put it back on,U should anyways lol

So here's how to do it:

Calibrate the tps

Enjoy!

Required: A small round file
Sand paper (for metal)

Steps: Remove the TB from the car and take it apart,try to remember how it came apart so U can put it back together again.I have steps below on how to do this so don't worry to much.It's just that TB's vary,so your's may be different? Any TB can be adapted to this DIY and I believe all engines will benefit from this mod because U are not changing anything just removing the restrictions to promote more air flow into the engine.

All work was done on my d16y4.

If your tps is riveted on,U can hacksaw them off,dont need a grinder:

Replace with screws,the screws U need are in the tps thread:

Grab ya small round file and file that sucker out! Don't buy a cheap crap file,they dont work.

You will feel how much to file out.The main thing is to not file where the TB plate sits/seals and the rear,where it mounts up to the IM.It's very easy to file,I think the material is aliminium.

2 hours later,done! Make sure U polish that sucker up with say 3 stages of sand paper,finishing with a super fine paper to get it smooth/polished.Comparison pics:

No flash

Take ya stock TB plate and arm and do the same! U can use an electric sander if U have one to take off the majority,save time (I've done 6 now,so it's a good tool to have.)

Done!