FT-86 SpeedFactory Catted UEL Header

[h8meh8ers]

Originally Posted by nunonuna

Im just glad it turned out to be normal~

Maybe to consider for quieter cat back? As other members claims it sounds really great with Q300 for someone prefers quiet exhaust sound. I have Q300 also and it is quiet even with catless front pipe.

Yeah that could be true, but I really loved how the car sounded before. From what I had seen, I figured these headers wouldn't add a drastic amount of noise, which would've been perfect. I don't want to get involved with trying to find the perfect setup either ya know?

Also, if I can avoid having to get a tune down the road and spend even more money, I'm all for that. I think I'm just gonna take the hit on these parts and enjoy the car how it was, since it was already a blast to drive. I'll take that torque dip for a more livable ride any day of the week. So if anyone's in the Philly area and wants a good deal on a set of catted ft86 headers and motiv overpipe, let me know. Hate to say it, but they're most likely only going to be on the car for a few days tops.

[nunonuna]

Originally Posted by h8meh8ers

Yeah that could be true, but I really loved how the car sounded before. From what I had seen, I figured these headers wouldn't add a drastic amount of noise, which would've been perfect. I don't want to get involved with trying to find the perfect setup either ya know?

Also, if I can avoid having to get a tune down the road and spend even more money, I'm all for that. I think I'm just gonna take the hit on these parts and enjoy the car how it was, since it was already a blast to drive. I'll take that torque dip for a more livable ride any day of the week. So if anyone's in the Philly area and wants a good deal on a set of catted ft86 headers and motiv overpipe, let me know. Hate to say it, but they're most likely only going to be on the car for a few days tops.

Yeah~ once you found perfect tone that you love, you don't wanna change it~

[FT-86 SpeedFactory]

Loosen the front pipe single mounting bolt. It is oblong shaped for adjustment. Doing so should then give you the ability to move the front pipe one way or another to make an adjustment and tighten back down.

[h8meh8ers]

Originally Posted by FT-86 SpeedFactory

Loosen the front pipe single mounting bolt. It is oblong shaped for adjustment. Doing so should then give you the ability to move the front pipe one way or another to make an adjustment and tighten back down.

thanks for the reply. After driving some more, it's definitely just from all the extra noise within the cabin. going back to my old setup of just your V1 resonated and a catted motiv frontpipe. way more liveable, and still a great sound.

Even though the headers are amazing, and really do get rid of the torque dip, I'm just not used to that much sound in a car.

[kodyo]

Originally Posted by Re~Mix

Anyone else still getting P0420 codes with the OFT Stg 1 Tune? I have cleared a few in the past 5,000 miles, beginning to wonder if I should inspect underneath the car further for cracks.

No complaints otherwise, didn't want to tweak the Stg 1 to ignore any CEL codes

Got P0420 today with OFT stage 1.

[Cartman]

Untuned catted vs OFT 93 uncatted FT86SF header

[nunonuna]

Originally Posted by Cartman

Untuned catted vs OFT 93 uncatted FT86SF header

I wish the comparison was catted + untuned VS uncatted + untuned or catted + stg1 oft VS uncatted + stg2 oft

[Cartman]

Originally Posted by nunonuna

I wish the comparison was catted untuned vs uncatted untuned.

I plan on going to the dynojet where I did 186 tunned with the catted header and compare it.

[nunonuna]

Originally Posted by Cartman

I plan on going to the dynojet where I did 186 tunned with the catted header and compare it.

Glad to hear that~
Thanks for spending your hard earned money for helping others~

[NissanGuy]

P0420



My car's got the header, an overpipe, and catback. A cat efficiency fault can't result from increased airflow, right?

Originally Posted by FT-86 SpeedFactory

The catted header was only tested ( as that is what the community asked for ) on a stock car to not throw a CEL. If you start adding other bits like intake, exhaust and etc you start to mess with the volume of the air moving through the system now which can throw CEL's at the cat then.

You definitely should get a tune if you are doing multiple mods.

-Jeremy

I'm pretty skeptical that other mods can cause a cat efficiency fault. Be that as it may, I'm not uninterested in a tune. You mentioned a long while back that you offer a tune specific to this header. Where might I find that?

EDIT: lol the official Toyota scan tool says 'bank 1' oxygen sensor. That's not even close!

[kodyo]

I'm using a OFT Stg 1 93 oct tune with the P0420 code turned off. I have overpipe, catted front pipe, and axleback (along with the ft86SF header of course). That seems to be the recommended tune for this header if you read further back.

[steve99]

Originally Posted by NissanGuy

P0420



My car's got the header, an overpipe, and catback. A cat efficiency fault can't result from increased airflow, right?



I'm pretty skeptical that other mods can cause a cat efficiency fault. Be that as it may, I'm not uninterested in a tune. You mentioned a long while back that you offer a tune specific to this header. Where might I find that?

EDIT: lol the official Toyota scan tool says 'bank 1' oxygen sensor. That's not even close!

The toyota tool is a universal tool for many cars v6 models for example have 2 banks of cylinders. In our case we only have one bank so it refers to bank 1.

It still possible to get the p0420 code on catted header if the cat characteristics dont match stock cat, which is what the ecu is looking for. It compares the reading from the 02 sensors either side of cat in header under certain circumstances to determine if its working to spec, exactly what and when the ECU looks for I don't think anyone other than toyota/subaru know, it possible that additional mods may cause the ECU to see readings outside this spec and cause it to throw the P0420 cel code. Even on catless header the code can take many miles or weeks to show up.

Or more likely you have a gasket leak, crack in header, or leak at 02 sensor if no one else usually gets that code with this header.

if you did not do as below that may be the case. however the only 100% way to not get the code is disabling P0420 in ECU

Tips for changing header

1. Always use new gaskets, if you re-use the old ones it will leak causing 02 sensors to read incorrectly
2. Run a thread tap or chaser (M18 x 1.5) through you new header 02 bungs to clean them up , 02 sensors should screw in by hand. If you force them they are easily damaged and the threads on 02 sensor easily stripped.

3. Put high temp anti-seize on header bolts and 02 sensor bung threads, DO NOT get any grease or anti-seize on sensor tips, once contaminated they are stuffed.

4. Leave the 02 sensors in the stock header until you remove it from car then remove sensors. Just disconnect the plugs an tethers on wires as per picture below.

5. Black plug to black socket, grey plug to grey socket. and remember to plug both back in.

6. Use correct torque for bolts and o2 sensors, re-torque after a heat cycle.

[NissanGuy]

Originally Posted by steve99

The toyota tool is a universal tool for many cars v6 models for example have 2 banks of cylinders. In our case we only have one bank so it refers to bank 1.

It still possible to get the p0420 code on catted header if the cat characteristics dont match stock cat, which is what the ecu is looking for.

Or more likely you have a gasket leak, crack in header, or leak at 02 sensor if no one else usually gets that code with this header.

if you did not do as below that may be the case. however the only 100% way to not get the code is disabling P0420 in ECU

Tips for changing header

1. Always use new gaskets, if you re-use the old ones it will leak causing 02 sensors to read incorrectly
2. Run a thread tap or chaser (M18 x 1.5) through you new header 02 bungs to clean them up , 02 sensors should screw in by hand. If you force them they are easily damaged and the threads on 02 sensor easily stripped.

3. Put high temp anti-seize on header bolts and 02 sensor bung threads, DO NOT get any grease or anti-seize on sensor tips, once contaminated they are stuffed.

4. Leave the 02 sensors in the stock header until you remove it from car then remove sensors. Just disconnect the plugs an tethers on wires as per picture below.

5. Black plug to black socket, grey plug to grey socket. and remember to plug both back in.

6. Use correct torque for bolts and o2 sensors, re-torque after a heat cycle.

I admit I didn't re-tap the holes or use anti-seize, but I've actually replaced all the gaskets twice (lesson learned: Grimmspeed literally blows), and followed up with a smoke test to verify no leaks. Apparently this fault code (nominally for a stuffed cat) happens to a lot of people with this header.

[steve99]

Originally Posted by NissanGuy

I admit I didn't re-tap the holes or use anti-seize, but I've actually replaced all the gaskets twice (lesson learned: Grimmspeed literally blows), and followed up with a smoke test to verify no leaks. Apparently this fault code (nominally for a stuffed cat) happens to a lot of people with this header.

You could try those 02 spacer defoulers but the rear 02 is a bitch to get to without removing header.

if your thinking of a tune in near future it the best way and will have other benifits.

read the likns below if you want more info on tuning ect.