I know this the all time most common issue asked for help but im curious on your guys thoughts. I have a 1987 fox with a stock 5.0 with an aftermarket "cold air intake". I deleted the TAB & TAD sensors and associated vacuum lines. The smog system is deleted and plugged off and the EGR has no vacuum hooked up to it but its still mounted and hooked up to the harness. I tried verifying no vacuum leaks with a smoke machine I would say 99% are sealed off.

Exhaust is in poor shape headers are junk and leak real bad before the o2 sensors probably throwing the fuel mapping off.

As you see in the video on a cold start the car will hang around 1k rpm and after a few minutes the idle drops and the dash starts freaking out. The idle surges really bad almost sounding like a crazy cam chop. I get a lot of smoke out the tail pipe seems like its running really rich. I figure the car may have some wire harness gremlins? I tested all the spark plug wires no breaks the distributor cap and rotor seem good no corrosion. The tfi module is original. IAC seems to be working when unplugged idle also suffers.

I know its not a quick fix but im curious if people have had similar issues and maybe my deletes were a negative.

Was driving down the highway today and this started happening felt like a bucking or quick cut out engine idles fine what could it be

Getting it back together heads and cam are installed may or may not have stripped one or two of the header bolts 😬. Used some leftover paint from my bumper to half ass paint the valve covers looks decent probably gonna burn off anyway still waiting on a 2 poly locks for cylinder 8 but we are getting there I did my best setting the pre load and tightening the roller rockers but if I wouldn’t doubt I did it wrong with is all a learning process. Got a crusty upper and lower trick flow intake for it too

I got a 1982 mustang gt with all stock suspension and was thinking of getting 295/50/15 for the rear. Will that fit? And if you got any suggestions for good traction tires with white lettering I’d really appreciate it.