Eliminating torque dip
 

Is it necessary to swap out stock header to address torque dip or can a tune alone do the trick? I prefer to have a cat for sound and environmental reasons.

A supercharger takes care of that.

The headers do help decrease most of the torque dip. A tune can also help, but preferably with the help of a new header. Or like the comment above, boosting resolves that too. It all depends on what application you plan on sticking with (NA/Boost). If you add a turbo, you'll have to change the headers anyways. You can get for example, a JDL UEL/EL and be able to add a SC without replacing the headers.

A tune will help, but not too much.

https://www.ft86club.com/forums/showthread.php?t=121315

E85 tune will do it if you have E85 available.

My understanding is that removing the cats (either with an aftermarket header or by decating the OEM one) is what allows the tune to improve the torque dip. On top of that, the 2017+ engine changes make the tune+header less noticeable vs. the pre-2017 models.

Catless header and tune. Like 80% gone and for sure noticeable driving round town

I run a catted header (ft86 speed factory) with a tune from Mike @Xero-Limit and I don't seem to have the dip anymore.

I believe the simplest answer, already addressed by folks here is this.

A tune alone will improve power all around a bit, but will still give you the torque dip feeling, just improved.

A header and tune gives the feeling of a smooth torque curve, AKA dip eliminated.

You can easily eliminate the torque dip, by staying above it. When you drive the car seriously you will never see that dip.


I dunno, kids these days. ;)

Agreed. Other than the first gear dip, you can keep the revs up high and never get back into that dip. Downshift when needed and when you should, and you won't have to worry about it.

That dip is there to remind you that these engines are a balance between decent performance and good fuel efficiency.

Perhaps the OP should consider an automatic only 2.0 liter Supra instead of a twin.

Thx for explaining the reason for the torque dip. I never knew it was meant to remind me of something

Some headers will put a torque hump where the dip was. I personally prefer to drive above 4500 rpm and replace the short block every year. I also masturbate with a shoe rasp in my ass and wear my shoes on the wrong feet.

You're right, wanting to be able to keep up with traffic without having to wring out the engine is for mouth breathers.