throttle body help

[MAXSPL_153]

wondering if theres a way to richen up my air/fuel mixture on my truck .. 355ci SBC . somewhere i read to unplug the o2 sensor and that would put it into " open loop" whatever that means and richen it up . would this work ? or is there any other way ? note: im trying to do this without spending any $$ thanks guys !

[speeddemon0308]

good luck.. best way is to switch over to a carb. or have some one re-tune it but that costs $$

unplugging the 02 will make it run goofy and your engine light will be on.. and you will have shitty gas millage ( experience on a 350 sbc )

[MAXSPL_153]

Well it gets 11 mpg now so it's not a big deal

[EricM9104]

So you want to go from 11mpg to 5-8mpg?? :clapping:

[speeddemon0308]

do it the right way and have it retuned or toss on a carb. if you run it to rich you will fill your head and piston with carbon and or wash all the oil off your cylinders

[OrionStang]

PCM tune. Only a couple hundred bucks for a better power/torque curve and increased gas mileage.

[MAXSPL_153]

Ok thanks for the tips , i forgot to mention I'm not wanting to richen it up just for the hell of it , it has some minor work , ie: mild cam , msd , headers, full 3 1/2 " exaust . So it was running VERY lean . To the point it's discoloring my plugs .

[OrionStang]

Ok thanks for the tips , i forgot to mention I'm not wanting to richen it up just for the hell of it , it has some minor work , ie: mild cam , msd , headers, full 3 1/2 " exaust . So it was running VERY lean . To the point it's discoloring my plugs .

I f you got those mods, you MUST get it re-tuned. You will be so much happier.

[speeddemon0308]

3.5" exhaust is a bit over kill dontcha think? lol

[MAXSPL_153]

I f you got those mods, you MUST get it re-tuned. You will be so much happier.

ok I'll look into that , it's a 1995 so I hope my stock computer is tunable . Any ole race shop should be able to do this ?