Any long term or short term problems with running 1 catalytic converter on one bank and the other bank doesn’t have one on a Y-pipe setup exhaust

[99xcss4]

So I can take that 0411 out of a 00-02 van and direct swap into my 99 and it would fire right up and functionally work ?

kind of you will need to re-pin your wire harness you will need to get a hold of lextech to get a pin out conversion chart I think it $20 https://www.gmt400.com/threads/0411-pinout-contact-for-lextech.61796/

 

[A97obs]

here are some listings on ebay https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2332490.m570.l1313&_nkw=0411+pcm+l31&_sacat=0 https://www.ebay.com/itm/275027823417?hash=item4008ef8b39:g:FM4AAOSwvohhkWfG&amdata=enc:AQAIAAAA4B7zrtnAiOHgBHHieygsOpls2y2Zakt6FmiZ0k4Mb2UDVB6urTi0/gflyn8r8QfIaPCK7Rwn19tiPIvJqRoMP5y8+zz1epopb9EO/uPYdg64BEZdX84D9OySGwlE7TZqCXufK758ppD7/0PqHvP/otzZT6qkDoXlWRHa/dXDHPCnxSqhDo55napx/E600nHFx1ZooTUGJyfV1+tXfVgLtKqD2VdhY0KMcGsr0zqORok2kdun1E7l/MSI4yVMMmSoC8VWW0S4CTdxOYrohE01cryx0pbTZ/nKwytIt3hSNtuF|tkp:Bk9SR5bqzOqnYw

i see the catch now ! Nothing is simple
If you wanna play the game

I just wanna know literally what do I gain without tuning this pcm ? Leaving it as it is , if I swap it in and ran it how it is ?
Would it fire up my suburban without any tuning done ? And would it match up and be compliant with all the CA emissions currently on the 99
Or Is a 0411 swap more so for after i do away with the cats etc?

 

[99xcss4]

yes that is the catch if that is what you want to call it

 

[99xcss4]

here is a video

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[A97obs]

this bolts on to the y pipe it has the other down stream sensor bung in it also I think it come with a plug just like the y pipe comes with plugs https://www.ebay.com/itm/314751373989?fits=Year:1996|Model:K1500&hash=item4948a4d2a5:g:YroAAOSw2MplsZ40&amdata=enc:AQAIAAAAwB8Lbt0polCJ2/++F4RuOMAbPodzUEODIlsO5uvO04LQXE4EWuvCQlSrcVSwaLqwNtvWZ2CoiqApH1cdOfsc/gbUPmlppkGYbPTvYfTFEzed5Pc9k3kg/1X3jgMKmtgzzDEcWHNwRpDli5PbkH5cESIiJJAQNcNf0BLeS9MbAMKzO4y/H2jtXb3FGC3KkvgfsRJOl7tvbPIEGPfnTFX6bVsT26aod2HlZhIvJ2SEhnERi+l1MYArUN2OlcC0IR/pqQ==|tkp:Bk9SR9iCmumnYw

Nice find this may be very useful !

 

[A97obs]

yes that is the catch if that is what you want to call it

kind of you will need to re-pin your wire harness you will need to get a hold of lextech to get a pin out conversion chart I think it $20 https://www.gmt400.com/threads/0411-pinout-contact-for-lextech.61796/

Will he need any specific info regarding my vin? Or year make model to be exact on the pin out I’ll need

 

[99xcss4]

yes you tell him your year engine and transmission I do not know if you have to tell him if you have a rwd or a 4x4 I am not shore if pickup suburban or yukon/tahoe/ escalade

 

[A97obs]

these are the ones I have used in the past https://whoosh-motorsports.myshopify.com/products/vibrant-02-sensor-defouler-j-style-thread-on-bung

So the way a fouler actually works is you screw it into the o2 “Bung” and then screw the o2 sensor into the fouler and it has optional size orifices that allow more or less air flow to be sucked in and the o2 sensor senses the amount of flow and it either cooperates or it doesn’t

 

[A97obs]

here is a video

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Very detailed video took the time to watch it twice seems like this involves patience time and very precise measures . One wrong pin out and you fry it all

 

[99xcss4]

I do not know about frying it but I do know that if you get some thing wrong it will not start
what ever you decide to do tune the black-box or the 0411 the things to have changed are rear o2 delete cat delete egr delete evap delete air smog pump if equipt delete seed limiter removed or set so high that you will never hit it if you have an automatic transmission firm up the shifts a bit there is programing in the pcm that protects the transmission against too much torque disable it