FT-86 SpeedFactory Catted UEL Header

[EzyBrzy]

Originally Posted by BigFatFlip

Its possible they won't find any codes, but it will definitely fail visual inspection.

Is it noticeable from the engine bay? Or would they actually go as far as getting under the car to look?

[phrosty]

Originally Posted by EzyBrzy

Is it noticeable from the engine bay? Or would they actually go as far as getting under the car to look?

You can see it from the engine bay.

[BigFatFlip]

Originally Posted by Super Wabbit

So if I can condense the past few pages (check my "math"): This header is specifically does the following:

1. Can reduce/eliminate the torque dip without tuning or further modifications.
2. Adds a little bit of rumble without significantly increasing the sound level of the exhaust.

It is a standalone part, minimizing the amount of work that needs to be done to eliminate the torque dip. If you're using this in combination with other mods, you may have to get a custom tune...as we've come to expect.

So it seems like a lot of the negative comments, specifically those centered around CEL codes, are coming from a misunderstanding of what this product is intended to do.

You are pretty much correct. I think a handful of the negative comments are a mix of confusion and miscommunication. A handful of owners bought the header and "tuned" it with an OFT, thinking that it would get rid of the CEL, which it doesn't since its the tunes are an off the shelf UEL tune.

Originally Posted by EzyBrzy

Is it noticeable from the engine bay? Or would they actually go as far as getting under the car to look?

If you look through the thread, you'll find views of the header from the engine bay like this:



This one in particular was ceramic coated by the owner, but the new versions will have a "FT86SpeedFactory" tacked on one of the runners. So if you have an inspector who knows what they are looking for, its a pretty big giveaway. Doesn't mean you can't swap your stock headers in during inspection...

[churchx]

I'd rather think of making some simple fake cover above it first before swapping back to stock

[Cartman]

Originally Posted by Mr.Impreza

Really Cel still came on with OFT? weird....
This is the thing that has steered me away from this header. I liked the sound and that it was quiet...but i see a lot of people have issues with the tune. Like you get CEL....stage 2 runs poorly on it unless you do a custom tune....just better off going catless oft stage 2

Get a ECUTEK tune from a reputable tuner, easiest way. I'm currently running my own street tune and disabled the check engine light after it popped up after 3 months, and since then I have completely uncatted my header.

You will get a cel regardless of cat, so I would suggest just diving into a catless header like the tomei or Gruppe-S, and get a ECUTEK tune, and it might end up cheaper than the ft86 header plus OFT tune.

[Fishbed77]

Has anyone tried this with a Perrin 3" resonated cat-back? Any CELs?

[Andrew025]

Originally Posted by Fishbed77

Has anyone tried this with a Perrin 3" resonated cat-back? Any CELs?

You won't get a cel with a catback.

[FTemplar]

Originally Posted by Andrew025

You won't get a cel with a catback.

Yes you will. (Or may) Ive had it 3 times over 6 months now but nothing that Torque cant handle. I have a catback + K&N air filter that's it...

Sent from my MotoG3 using Tapatalk

[steve99]

Originally Posted by FT-86 SpeedFactory

There is no OFT tune for our header so of course it will issue a CEL. An Ecutek or custom OFT map will be needed.

Luckly the OFT tunes are open so just disable the P0420 cel code in the stage 1 tune (for catted header) = no more CEL code. About 5 minutes, if you having a beer while doing it :-)

[steve99]

Originally Posted by FTemplar

Yes you will. (Or may) Ive had it 3 times over 6 months now but nothing that Torque cant handle. I have a catback + K&N air filter that's it...

Sent from my MotoG3 using Tapatalk

No you wont get a CEL from a Catback , you either have other issues like an exhaust leak near o2 sensors or sensor problem

CEL code for CAT efficiency is P0420

It very likely your cel is due to your intake throwing off fuel trims/or AFR causing rich/lean CEL codes.

next time it come up read the code.

[FTemplar]

Originally Posted by steve99

No you wont get a CEL from a Catback unless you have other issues like an exhaust leak near o2 sensors or sensor problem

CEL code for CAT efficiency is P0420

I bet money your cel is due to your intake throwing off fuel trims/or AFR causing rich/lean CEL codes.

next time it come up read the code.

Sir, you CAN get a CEL running this header + catback. Like I said, I have gotten it 3 times over a period of 6 months... don't mind the other codes, they are related to my remote starter that I am testing right now. I wouldn't be surprised if just variations in ambient temperature and mositure % can make the CEL show up...

[steve99]

Originally Posted by FTemplar

Sir, you CAN get a CEL running this header + catback. Like I said, I have gotten it 3 times over a period of 6 months... don't mind the other codes, they are related to my remote starter that I am testing right now

The catback is so far away from the 02 sensors that monitor the primary cat in the header it would be virtually impossible for it to have any effect on the reading of those sensors.

you either have an exhaust leak, stuffed o2 sensor or your primary CAT is actually stuffed, if you track cars or drive them hard enough its possible to overheat and disintegrate the primary cat in header. It the only one monitored by ECU.

It also possible that your intake (assume its untuned as you would have disable CEL in tune) is throwing of the fueling enough to be causing the cat efficiency cel as well.

The ECU derives that cel from comparing the reading from the primary and secondary o2 sensors either side of the primary cat in the header, abnormal reading caused by missing or damaged cat, fueling way off exhaust leaks etc will cause it.

never heard of anyone getting that cel from a catback.

YES its possible to get this cel with ANY aftermarket CATTED header as the readings are different from stock cat.

A CATBACK by itself will not cause that P0420 cel

[FTemplar]

Originally Posted by steve99

The catback is so far away from the 02 sensors that monitor the primary cat in the header it would be virtually impossible for it to have any effect on the reading of those sensors.

you either have an exhaust leak, stuffed o2 sensor or your primary CAT is actually stuffed, if you track cars or drive them hard enough its possible to overheat and disintegrate the primary cat in header. It the only one monitored by ECU.

It also possible that your intake (assume its untuned as you would have disable CEL in tune) is throwing of the fueling enough to be causing the cat efficiency cel as well.

The ECU derives that cel from comparing the reading from the primary and secondary o2 sensors either side of the primary cat in the header, abnormal reading caused by missing or damaged cat, fueling way off exhaust leaks etc will cause it.

never heard of anyone getting that cel from a catback.

I'm not versed as well as you are in mecanics, all I know is that my car is stock except for my catback and air filter, but if you're right then i'm gonna have to have my header's cat checked out then. Not that it's a huge annoyance right now but still.

[steve99]

Originally Posted by FTemplar

I'm not versed as well as you are in mecanics, all I know is that my car is stock except for my catback and air filter, but if you're right then i'm gonna have to have my header's cat checked out then. Not that it's a huge annoyance right now but still.

mis-read your post thought you had K&N intake if its just a filter that wont be a problem unless its an oiled filter and its been over oiled and oil has got on maf sensor.

A number of guys with tracked cars have completly blown out primary cat in header.

With stock catted header you should not get the P0420 cel code unless something is wrong.

If its an aftermarket catted header then yes P0420 is possible, as the aftermarket cat may not match the charasteristics of the stock cat in header. some people will never get the cel some will occasionally.