So long story short I've spent the past almost week just testing , data logging and reinstalling the rear 02 sensor and spacer until I found the EXACT combo to keep off the cel and have all emissions system monitors passed ( 02 related atleast )..
I'm running a ported facelift sc with 19% pulley , ported intercooler horns , ported sneedspeed intake Manifold, alta oversized intercooler, 10.2mm plug wires and step colder ngkR ,bmw 65mm tbody and 3in intake , 380cc injectors , facelift ecu with gp tune , Xforce catless headers and Milian non resonated exhaust AND NO CEL.
THE ONLY THING I FOUND THAT WORKS is the right angle 02 spacer with built in cat converter. In the pic mine is cut shorter as well as the mini cat because that was my test piece BUT you DONT NOT cut it.
you leave it asid BUT you must remove the mini cat by unscrewing the cap with plyers and you need to use a washer with the size hole i pictured below.. you place the washer ontop on the mini cat snd screw the cap back on. Then when you put the spacer in your exhaust you MUST screw it ALL the way in and have the 02 clocked so it's tip is facing downward, you will want it as vertical as you can get it without it interfering with the exhaust tunnel..
after you've installed it before you test drive YOU MUST reset your 02 sensor adaptions and short and long term fuel trims. That can easily be done via inpa , some handheld scanners via hard reset will reset everything but ive had little luck with them and the few that have worked were actually cheap ones , the expensive ones never seemed to work.
After you've reset everything go take it on a drive , DO NOT GO WIDE OPEN THROTTLE but do get abit heavy on the throttle and down shift too coming to stops periodically.. you must take it through city stop n go driving for 10min and then upto 55 mph and then 65mph or above each for atleast 5min and then city driving for 10min and back home. Once done driving let the car then idle for 2 or 3min only and then shut it off and completely remove the key and let it sit 10min. Then go drive it again and try and get upto 55mph or more asap and cruise it for a few min , if your cel IS STILL OFF your car has now tricked the 02 into thinking that a cats in place and the car is now running rite and not trying to compensate for the lean condition the rear 02 detects without a cat. if your cel came back on you for your combo may need to adjust the size opening of the washer ontop of the mini cat in the 02 spacer.
YES your car WILL run better without the p2270 or p2096 or p1036 codes which are associated with having a cat delete...
my car DID pass Wisconsin emissions in Milwaukee Co, so it's not like we have easy to pass emissions, they're pretty tightass about it..
Lol when i passed I popped my hood and the guys all started laughing and I told them my setup and there were ALL surprised it passed.. the test pipe fools them on the visual inspection..

 

I’ve never ever seen one with a catalyst in it. Did it come that way or did you combine two things?

 

it came with it..
I've tried numerous different types too like I pictured below , NONE of them were of any luck..

 

Here's how the 02 is clocked and setup in my exhaust.

 

I drilled out a spark plug anti fouler and only had a p0420 pop once which I was able to clear. Just had the car tuned by Adrian and his initial scan was clean. It’s been a few months since I had the code.

 

WI has emissions? No ****. None in ND. Still the wild west here. Glad you got it sorted tho.

 

depending on the County , yes... I could just register my vehicles up at my cottage or father's house next door to it in Harshaw and avoid emissions BUT I prefer to do things the rite way.
plus I like my cel to come on ONLY of its detected an actual issue , not something that's been hacked or rigged but still runs fine..
plus then if i get rid of the car this REALLY helps resale then because it wont limit it to where it can be LEGALLY registered and insured.
i also included pic showing my car mid pull , at 15lb boost ( makes 19 on stock ic and 17 on grs motorsport) and its at a steady 12 afr.... what more could I ask for

 

Damn! Is that a second gear pull?

Looks like you're doing about 73 mph and you still have about 1000 RPM to redline. My car only hits about 65 mph in second gear but way less mods than you.

 

to be honest, lol I don't remember but im pretty sure its 3rd...i do shift at 7300..
no matter your engine power though Your transmission is going to limit you to a max speed per gear.. you'll just get through the gears quicker or if you have higher redline ( like my other mini has 8k ) you can come into yiur next gear at a higher rpm and then it sits longer in the optimal power band..

 

I dont know how ADrian tunes the stock dme but your long term trims are adding 13% fuel to compensate. Again no idea how he tunes if he adds a divider ration to add a set percentage or if he actually re creates the stock fuel table which is torque based calculation. That being said on a bone stock setup on any platform short terms is recent day to day random demand or lack of and long term is a a more permanent addition based on short term. Industry standards is +- 20% on trims but usally again on factory systems fuel is added or removed based on how its running (Ve) so normally fuel that percentage could be added say if the filter was plugged and flow was down so IDC goes up and DME sets to demand more fuel same in the other way say fpr is bad and running rich it would pull fuel. All normal stuff but when something hits long-term its usually a potential sign of a issue.

Again I am just talking out loud on tuning. I have no idea again how Adrian tackles the factory setup. I have seen people on standalones and things like COBB etc keep the base factory's map and add a divider to increase fuel needs across board. Almost like a old school FMU hack where it used a voltage clamp to up pressure with a false signal to ecu.

Curious to see your trim stats from the grey/blue car to see if its similar which would verify he might he use a divider to up the fuel instead of cell by cell tuning for VE.

I think you guys down there are the only region in WI that has emissions? Does Madison? We don't in the upper wester area and we didn't in central when I lived in Marshfield. Lol if they did 80% of cars wouldn't be on road lol as they are all 25+ beaters held together with duct tape. Insane also how a 5 year old 90,000$ Raptor or anything new really has rust in 5 years around here. Blows my mind as it didn't start as a rotted missing Truck bed Quarter it started as a chip or spec and people just cant be bothered to fix it when its a dime sized issue. Just goes to show the mentality of our society. Owners manual used to instruct how to adjust valves or points now it says don't drink the coolant or the urinal cake lol. I digress.

 

it's not tuned , it's running stock gp tuning yet.. it will be custom tuned soon..and who knows how accurate that freebe app I was using is with displaying fuel trims and stuff i just used it to check my emissions monitors, I will check it with inpa soon since I'm home now.
and yes I'm positive, all of se Wisconsin counties do require emissions..

 

yes please don't take it the wrong way or rude either. Please remember I do have Autism. I was just merely talking out loud about a subject I am knowledgably about. I learned so much in my 18 years at Jim Carter/Eau Claire Ford. Glad that's behind me though. Destroyed my body. So thats out of the way. No idea if you took it as rude or not hope not.

But yeah in general STFT would be immediate day to day "Short term" Like it implies. Basically minor corrections as the narrow band is basically worthless anyway other than pairing with the rear unit to confirm the cat is functioning. Which is why in this instance Torque based calculations trump NArrow band 0-1v crap lol. (Why the r56 and al late model obd2 went to wideband) I cant recall the time/duration before a short term adjustment sets as a long term. But usually there is a reason. Again there is some variance and +-20% is within that limit but in theory it shouldn't be drifting that far. Like if you had a lean intake gasket on a sbc you would see STFT and LTFT adding fuel on that bank to compensate until it couldn't.

The resetting adaptions theory that floats around is not really accurate and certainly the method via the speedo with the buttons does nothing but clear the BCM ****. But when you watch the data stream live you begin to understand there is no reset and re learn for mods or driving style the literal sense. Not like people think.

Fwiw assuming you have 330cc injectors the added 13% is 42cc of fuel. So Curious to also see the IDC% as well to see if it tracks upwards as well. Can't recall if you did a pulley or not. But might be worth yanking the injectors and having them flow tested if you have a person local to do that. I could if you where closer as I have a cleaner/flow tester here. Unless you wanted to send them for ***** and giggles. Could all be just nothing likely is but could also be a issue that is working its way to surface or worsening. I check everything like that myself as I take no chances. Check the IDC and trims at same time and see if the idc jumps when the 13% comes in. Or if able when it happens in rpm/load/psi. Simple causes would be fuel system is getting weaker and cant flow the rate the stock tune was setup for. Filter etc. Or could be increased CFM dictating more fuel like a vaccum leak. But again I think its worth a poke around. I wouldn't've think a pulley would push enough air to require that much more fuel especially long term. 42cc is a good bit of fuel. Even more if 380cc or larger injectors.

 

I am running 380cc..it's alot like the gp car with a larger intercooler and stuff but i will be swapping on a ported stock tbody today instead of the bmw one because i have a feeling that bmw tbody is causing my lean condition in medium boost situations. Lolol i very rare am even in boost with this car as i mainly use it for highway travel to n from my cottage and to see my pops but anyways , at boost between like 5-10psi it runs pretty darn lean , in the high 13s actually low 14s but yet wot , max boost is running a solid 12.5 afr so I'm sure it's a combo actually of the stock gp tune and bigger tbody and 19% pulley making more boost at lower rpm so it will need more fuel added come tune time I'm sure.. and I will probably step up to 440cc injectors too then just to give me a little extra ceiling..
lololol again my man , no offense taken... I get your intentions...
your alot like me , you want **** to be done rite or don't do it at all.. I too often go in too deep into making things as nice as I can possibly get them. And I HATE when something Is done wrong, you know it's wrong but just continue on and turn a blind eye to the issue or procrastinate correcting it. It would literally drive me insane until I fixed it..lol I couldn't drive it ( like simple cel on for stupid 02 code ) like that..I would either put a cat back on or do all I did hoping to fix it a cheaper way 1st befor I pony up the cash and do it hard way. Because I really would prefer to run catless if possible.
I very much appreciate you bringing any issues you see in my builds to my attention. Id hate to overlook or not understand something and end up damaging something...lol because it HAS happened to me a time or two..

 

no worries. It added fuel first in the stft then after the need for that adjustment was there for X amount of Key cycles it moved it over to LTFT. Could be all the mods you have done to add air. Porting/pulley/etc. If that is the case its just a good visual aid you need to increase your injectors to provide the base fuel it needs plus head room. 80% IDC is the common standard to hover around. If it where me I would just grab 550cc bosch units as they are plentiful and cheap. Nothing wrong with 440's either just these days its a odd ball value vs 550. Decade ago it was a common figure to use. In the before times when douche bag and his douche minions where at their height he used to sell 440cc injectors and scratch off all the data so people didnt realize they where nothing more than off the shelf Bosch units that could be had everywhere. When I had 550cc I cant recall where I got them but they where just Bosch 550's found on modern Mustangs. Think they where around 350 with pigtails. Just beware there are a **** load of counterfeit injectors these days like anything else and its one thing you dont want to try a budget/good deal on. Sometimes you can risk it or try a unknown part but injectors isnt one of them. If you get anything make sure its from a well known big box retailer that you know wouldnt sell knock off shi*e. Obv matched set is what you want or it will just fight you tune wise.

Mike is trustworthy source of real units. Wouldn't ever recommend bytetronik to anyone after having it myself but the injectors are legit with pigtails.

https://bytetronik.com/store/mini/r5...0cc-injectors/

 

Just wanted to mention that Adrian freely posted a how to on removing the rear 02check a good while ago amd someone had recently bumped it so I found it again.

here is the link.


https://www.northamericanmotoring.co...p0420-off.html

 

yea it can be turned off via tune BUT you WILL NOT pass emissions then.. you NEED the rear 02 on and for it to read " ready / ok " on the diagnostic and with it turned off it will always come up " incomplete " and you'll be told your emissions systems monitors arnt completed and to finish drive cycle befor you return. But it will never be completed with it turned off..
I went through that the hard way figuring that out..

 

Still sucks you have to do that and 3 hours north we do not. Hopeful by the time it gets to the Northwoods the car will be exempt which it almost is.

 

You know what sucks even more, me having to do it but my buddy living 3 miles west doesn't, and running a link so I wish i lived three miles over.

 

yeah same thing link here no emissions luckily. Could be worse. Could be cali where entire setups get swapped around all the time lol.

 

I still haven't thrown an 02 code yet...

 

Can you please post exactly what you used or a link to them.

 

this is the exact thing I used , I got mine off ebay but I couldn't find one on there last I looked... even now , still no cel...

https://jcarpart.com/products/copy-o...xoCQJ4QAvD_BwE