How To De-Smog a Third Gen F-Body (the Cheap Easy Way!)

How to de-smog your third gen TPI Firebird or Camaro by yourself WITHOUT a smog pump delete pulley or check engine light. I am not a lawyer. Thanks for watching and GOBLESS

[@DOVASQENTERPRISE]

“Maybe in California… but here in America it is legal” made my day 😂

[@theRVisme]

💯 brother. Fugg CA cars and fugg CA.

[@kennethrand1032]

Nothing good from our society has ever come from California. Nothing but drugged out movie stars, homeless, and shit smog laws.

[@davidcat1455]

@@theRVisme Fourth largest economy in the world. Y’all don’t mind the money that California contributes to all the poor redneck states that look for handouts all the time.

[@markobee9400]

I just did the cat delete on my 88 GTA (owned since new) last week. I can concur that the difference it made in my smog dumping, tire spinning, freedom machine is truly impressive. If you haven’t already, get an upgrade second stage chip. Life will be good.

[@thedoubtfultechnician8067]

Got recommendations for a supplier?

[@kmas8229]

Does anything else have to be done prior to stage-2 chip installation?

[@BlackRam17]

Where did you get the chip? Also the cat delete made that big of a difference huh?

[@jessedenicola8063]

@@BlackRam17 they sell the chips in Hawks motor sports and yes it’s a crazy different, i removed mine as soon as i got the car, couldn’t be a better decision

[@joedirt2718]

@jessedenicola8063 what's the difference

[@BryanEnsign]

Smog dumping, tire spinning freedom machine. HAHAH love it.

[@milesmania1150]

I love the video and it was very helpfull with a lot of needed detail. I am going to do a smog pump delete also because I bought headers to resolve my caste iron header leak.

[@bigmo5225]

You just gained a new follower. You are hilarious!

[@goratgo1970]

Way late as my tuberythm is 12 months behind but like the stepped out details which I will use to carefully remove and box smog stuff since I MAY someday return to home in Calif. to continue to enjoy my '91 RS Camaro which is getting the 305 replaced by the 383 I am building. I do have the smog delete pulley already. 👍

[@jonathanryan2915]

Air injection is just funny to me. Let's just have an air pump that pumps fresh outside air into the exhaust. And the government saw this and went yeah, that's totally not cheating, go ahead. In fact make it mandatory in California

[@nowhere-central2566]

Have an 87. Wouldnt rev above 3000 rpm. Someone thankfully thought they were getting something and swiped mine. Threw some new tubing in and the thing sings!

[@motherlovinsnuffstar]

My 91 tpi 305 is surprisingly quite a bit ballsier than anyone I've ever driven/owned. Nothing fast or scary by no means, but it could walk my 91 bird sideways, and smoke the tires with a posi easier than my 97 lg4 Camaro could one tire. And my Pontiac has 2.73 gears! I pulled the engine (still runs great!) To put in something a little bit bigger I'm its place, the stock rear and trans are on borrowed time 😂.

[@LT3D]

Man, as a third gen owner and someone who left a communist country, I died laughing at 5:15.

[@Adrian-mq5ld]

he is right ,the communists use their green bs to control countries this time.

[@whatimeating4277]

Easy on the 3.1 to skip the smog pump. You don’t really have a choice because you can’t buy a new one. You don’t even have to remove it. Use a different belt and reroute. You can’t buy a charcoal canister. Therefore unplug fuel vapor line from charcoal canister, remove purge valve, and put an air filter on the end. Cat…… well you can leave it, but just knock the guts out of it. Make sure when messing with charcoal canister you unplug the vacuum line and plug the end of it off. Non of the changes will give you a service engine light.

[@V8AmericanMuscleCar]

Great video and thanks for sharing. Do you have a part number for the new belt? I'm from Europe and I don't want to order wrong belt. 😁

[@karlschuler2474]

Just rewatched and performed the same procedure on my 1985 Trans Am with TPI. A couple of differences between the 85 model and yours (not too sure if my situation is the same as earlier cars, or when the procedure becomes the same as Dt's), My car has 4 belts instead of 1, the egr pump is run off of a single belt, so this means less modifications. The half in iron hose caps still work, however, the egr pump is held onto the engine through 2 brackets with 13mm bolts instead of T40s. The charcoal canister is a separate unit held in by I think 1 10mm bolt, the pump wheel for the belt is still held in by 3 bolts, but not 10mm, I think SAE of some variety, very close but not quite. And lastly, it has extra metal pipes for the air system that run around the back of the engine. These don't need to be capped just like DT's example, but I just performed the work and time will tell if it becomes an issue, or if it's just a little benign clutter. Just thought I'd share what I found!

[@karlschuler2474]

Sorry, the EGR wheel is run off of a belt that ONLY connects to it and the crank, that's what I meant by single belt.

[@xsanladapkerx]

can you delete the smog pump without cutting out the CAT with no issues? like tuning issues, fuel/air ratio ect? will it still run fine? i got a 92 camaro TBI 305

[@jacobbalduf9770]

Real quick question here, trying to leave mine mostly stock. If I remove the catalytic converter and leave the tube for the smog pump will any codes trip? or possible negative outcomes in doing this?

[@vintageflipz3268]

Looks like my 92 RS has two separate hoses coming off exhaust. Do I just remove the second one and cap it also.?

[@StevenBlack2013]

Those metal AIR tubes that connect to the exhaust manifolds are a pain in the azz to get out, but they can be removed using a flare nut wrench and the holes capped with 5/16 inverted flare nut plugs. I did this on my 84 Firebird just to make the engine look a little nicer and easier to work on

[@thedoubtfultechnician8067]

How do you access the fasteners that hold it in? From above or below?

[@StevenBlack2013]

@@thedoubtfultechnician8067 from above. The driver side is pretty easy to get to but the passenger side is way more hard to access the closer you get to the firewall. On my vehicle I removed the AC stuff for access since I wasn't using it anyway. You might be able to use a flex head flare wrench. There are 4 flare nuts per manifold

[@thedoubtfultechnician8067]

Thanks!

[@dustinfrederick]

What’s the belt number? Also do I have to take pump off or can I just run a smaller belt

[@prestonrichardsfrancistutt8955]

Hey does this work for the 350 right? I know the smog stuff is the same but didn't know if I could use the same belt used for your 305?

[@user-qz2xq6rd2e]

Can you just unplug the connectors and leave the pump on the belt?

[@zoltanbalinttoth5013]

In this case there is no need to delete EGR valve?

[@kenjuicekrajewski9577]

Great video i just did this exact thing last week on my 91 rs convertible is that a 45 inch belt some say can use stock belt even without delete pulley? I rather put a new belt on thanks

[@thedoubtfultechnician8067]

It’s a 96.5” belt. It’s pretty tight as is, I think a stock belt would be way too tight even if it technically installs.

[@kenjuicekrajewski9577]

@@thedoubtfultechnician8067 awesome thanks il get one this weekend and finish it!

[@Koexistence13]

Can you route the air pump into your carbs air intake?

[@Black91RSCamaro]

Is your computer throwing ant check engine codes? I’m considering this myself.

[@stevenzagony6187]

Engine seems to run rich, do I need to reprogram the ECU chip?

[@mattw7557]

Can you go a little more in depth On how to clamp the tailpipe side on?

[@nikeiddude123]

I have a 89 vette with the 350 tpi, will the process work about the same for the 350?

[@rthomas1963]

great video one question what did you do with the small pipe running to the converter?

[@thedoubtfultechnician8067]

I’ll answer your question with another question- what converter?

[@wtf0101]

Funny shit, air pump was used to heat the O2 sensor on start up and the catalyst in the converter,the emissions only worked at above idle a till 80% throttle, above 80% throttle only restricted part was the converter,if you adjusted the TPS you could pickup some throttle response, I miss those days

[@MarsEsRojo]

I patiently await more updates on this car.

[@ronpociasek6562]

You are a funny guy

[@kennethrand1032]

EBL flash 2 by dynamic EFI. You can turn off all emissions.

[@SticksandGnomes]

What about for a carb version? 1987 firebird 5.0

[@markwells5645]

You notice any difference in mpg and power at all? Cheers for vid

[@thedoubtfultechnician8067]

Well it’s a 305, so…. Nope lol

[@captainkirk4011]

Great video! Question, will this process be the same on my TBI? I own a 1991 firebird 305

[@thedoubtfultechnician8067]

I don’t own a TBI, but it should be similar- the main differences between TBI and TPI are the fuel delivery system and some electronics, none of which are affected by this.

[@thedoubtfultechnician8067]

You could always follow along the video and see if everything looks the same on your car; if so then go nuts!

[@captainkirk4011]

@@thedoubtfultechnician8067 thank you for your quick reply! I appreciate you posting

[@applecrammer2780]

You are hilarious 😂

[@ssquirrel88]

If you're dropping a LB8 motor into any kit car. Delete the AC compressor and power steering pump. You only need 3, crankshaft/camshaft(hydraulic), water pump and alternator.

[@jaahasjaahas8729]

Did you just leave the end of the small pipe under the car that connects to cat or did you remove the hole pipe?

[@thedoubtfultechnician8067]

I removed the whole pipe and the cat too.

[@lazy6838]

What do I do about the EGR line on my cat?

[@jasonduque9687]

I have a stud attached on backside of AC/SMOG bracket right under the Smog pump that I cant figure out? Almost able to see when ya took off tube from back of pump, any idea? (1991 Formula lb9)

[@thedoubtfultechnician8067]

Got a picture? Thedoubtfultechnician at gmail.com

[@jocarr1791]

I'm sure you've already got this taken care of, but in those situations, I'll use my phone and take a video (with the flash on) and slowly pan around the area, then watch it to to see what I'm dealing with and where it is....sometimes it takes a few tries but it works.

[@gsxr2fst498]

My 88 iroc tpi smells like fuel fumes after warming up and will eventually start sputtering and shut off until it cools down for hours. Do I have a canister issue??

[@jocarr1791]

Did you ever get an answer to this question? I've got the problem with my 90 with a 3.1l.

[@herculgeorge]

Hello can you put the link for the belt and the pipe caps plz thank you

[@V8AmericanMuscleCar]

I'm here just in case you get the answer. 😉

[@MH-qq4ym]

What happens to the two electrical connectors at the beginning of the procedure? Are the left unconnected?

[@thedoubtfultechnician8067]

Yup, just tie them off somewhere safe.

[@michaelkarnes2629]

Hello, leaving them unplugged will turn the engine light on is there a resister or something that will turn it off. I live in Virginia so there is inspection every year. It won't pass if the light is on. ​@@thedoubtfultechnician8067

[@erichellner956]

Almost looked like a tpi engine. Same issue on an 86 carb 305?

[@markwells5645]

It is a tpi?

[@rayraylouis9488]

If I just cut that air tube on my exhaust and leave it will it create a leak or?

[@thedoubtfultechnician8067]

Which tube? There’s the crossover tube, the smog pump tube, and the tube going to the cat.

[@beans36]

The way the person who I got my firebird did this was by throwing a carbureted 350 into it

[@jp360ford2]

I had a seizure trying to read your comment lol

[@beans36]

@@jp360ford2 looking back at is same

[@milesmania1150]

Just one simple question. Are you sure it need a longer or shorter belt after the smog delete? Tough for me to visualize it. Thanks

[@thedoubtfultechnician8067]

The stock belt might fight but it’s gonna be tighter than a nun’s bum and probably not good for your accessory bearings.

[@milesmania1150]

@@thedoubtfultechnician8067 Ok. About how much bigger did you buy? In inches? I am about to do your delete method and would like to know how much longer the one was that you used. Your respectful Firebird friend MIles.

[@thedoubtfultechnician8067]

The belt I’m running is a dayco 5060965, but I also ran a slightly longer continental 4060970 just fine. They are 96.5” and 97” if memory serves?

[@mcqueenfanman]

Looks like the same routing, I'd don't know why he said you need a longer belt when you minus one pulley.

[@thedoubtfultechnician8067]

@mcqueenfanman Try it out!

[@masonmichaels1817]

I have a 350 what size belt would I use when I deleted this smog

[@thedoubtfultechnician8067]

350 ideas the same belt.

[@89irocz]

i have an 89 iroc and for some reason i have 3 check valves and i tried starting my car just with the air diverted disconnected and unplugged and for some reason it won’t start and my brake warning light is on. any ideas on why?

[@89irocz]

i have 2 check valves that connect to the diverter and one on the passenger side

[@89irocz]

sorry for spamming lol. but i got it to start i must’ve bumped something. but i’m still confused as to why i have 3 check valves. one comes out towards the back of the motor on my passenger side. one comes from the exhaust manifold on passenger side. and the other one comes on the manifold on the driver side. do i need to plug all 3 and is it supposed to be like that or is it dangerous?

[@thedoubtfultechnician8067]

Glad you got it started. Hopefully whatever you bumped is secure now, would suck if it came loose on a pothole and left you stranded. I have ONE valve going to the pipe to the catalytic and ONE that goes to both manifolds. It sounds like your manifolds are fed by TWO separate valves? That would make a total of three but I’ve never worked on another trans am to know for sure.

[@911RescueDiver]

can u post the new belt i need to buy? i could not read the label on the video.

[@thedoubtfultechnician8067]

6PK2450

[@911RescueDiver]

@@thedoubtfultechnician8067 Thank you boss. Great video and you are a funny guy 🤣

[@chobnob3495]

what size belt did you get?

[@devianb]

I went with 96.8

[@80fordmustang6]

Desmog all the smog era engines my desmogd and computer controlled carb deleted olds 307 runs so much better than my previous smogged one

[@joerynkiewicz4702]

Did deleting the cat make your exhaust louder ?

[@thedoubtfultechnician8067]

Yes

[@madnesshero4675]

U need to edit out ur plates in the video, since that cars...ya know, for off road use.

[@fatmirsejdini5992]

Check engine light on after delete?

[@thedoubtfultechnician8067]

No sir!

[@nathanschwinn5915]

What size serpentine belt are you using?

[@thedoubtfultechnician8067]

2,450mm. Roughly 96.5”

[@thedoubtfultechnician8067]

PN 6PK2450

[@UserName-ln5ol]

Less resistance does not equal greater force.

[@ZacLowing]

Save a lot of money and effort and get a Mustang of the same year, leave it stock and beat all the third gen turds

[@benkalinowski5834]

You forgot the egr valve delete lol and you need custom. Chip I had 2 engine lights on

[@melvin2219]

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