this thing is driving like a$$ at low speeds 30mph or so even hard to pull of from a dead stop. when its cold it drives fine but once it warms up it sucks. its rough seems like i got accelerate through the roughness. but it dont respond to the throttle when i try to accelerate through, it like builds up then shoots off. its sounds nasty and has a sputter to it. if im going about 50 mph or faster it rides alot better. the shop said it needed a tiune. got it done. no change. then they said the opti has two parts a high and a low? and it was about to go out and thats y it was drivin so bad at lower speeds cuz the opti was firing all cylinders. i replaced that and still no change. any ideas?

 

I've had control modules that would work fine when cold. Then once they got hot it would act up. You ever changed yours?

 

what is that? where can i find it on the car

 

is that something thatll come up in a scan

 

ignition control module. and they can throw a code or not. usually when they go the motor wont run.

 

this is it. Ima get it scanned tomorrow and see what i get. i got new plugs, opti, coil, and o2 sensors.



camaro runs rough - YouTube

 

your missing a cylinder.if you can try pulling the plugs wires off one at a time while the motor is running and do a compression test on all as well. need to find which is missin then you can look for the why.

 

275 flywheel horsepower. I think the older LT1's 93,94 and maybe 95 were rated at 265

what you get at a dyno is rear wheel horsepower and torque which is what you really feel.

I loved the 2005-2009 mustang guys who were mad when they took their 300 FWHP auto tranny stock stangs to a dyno and to be rewarded with around 240 RWHP. So, if you were at 325 RWHP that's not bad. But, was your engine acting this way when tuned? If so, there is more there once it's fixed

also, mustang(not the car) dynos are not as generous as dynojet dynos with numbers

 

gotta check the plugs

I betcha an insulator is cracked, a wire is loose or bad

you aren't doing bad for a V7 engine

 

'93 was rated at 275 and it goes up from there as the years go on.

Haha. That's if he's only missing on one cylinder. If more, I give the car props.