To floor or not to floor...

[spazmoid]

ok i've got a weird question. With your cars, when you floor it, does it actually go faster than when you just "half floor it" lets say. Cause when i give it about half throttle the car accelerates at about the same rate as when i floor it. Is this normal or do i have clogged, air, or fuel filters or something. I think my air filters ok, K&N panel and it looks clean, but i just find it weird that the car seems to accelerate better or the same when at half throttle compared to floored. thanks

 

[Sho-Driver]

I have seen a car have less response and power at WOT vs. PT when the timing is kicked back 8 degrees from detonation.

Are you sure you are at half throttle and not closer, or passed 3/4 throttle? 3/4 and WOT is hard to tell on the butt dyno.

 

[MI-SHOFEAR]

I have the same "thing" happening on my car.

 

[SHOMurph]

Sum ting Wong!

 

[MI-SHOFEAR]

Mi so dum,
I bang mi Fu Kin Ne?

 

[Denny]

You may have a stretched throttle cable so you're never actually seeing WOT. Happened on my SHO, "gained" lots of power when I fixed it. Gained almost 100hp when I had my timing corrected too

 

[stevemainian]

No, this happens with every car. When at WOT, the car goes into a pre-programmed mode and wont read any sensors.

Try flooring it off the line, then try only pushing the gas down about half to 3/4's the way. Youll find that when you instally floor the gas, nothing much happens. Its the other way around with the 3/4's. After you hit about 30, then you can floor it. This really only goes with the ATX.

 

[Sho-Driver]

Try flooring it off the line, then try only pushing the gas down about half to 3/4's the way. Youll find that when you instally floor the gas, nothing much happens. Its the other way around with the 3/4's. After you hit about 30, then you can floor it. This really only goes with the ATX.

If the car is running poorly or is improperly tuned, then it would run as you described. Otherwise, the car should have full power and response immediately at WOT.

 

[kurtis adum]

i do better in the atx when its not floored all the way off the batt



kurt

 

[SeanMc]

When I floor it off the line, mine takes off like a bat out of ****. Yes, I have an ATX.

 

[stevemainian]

If the car is running poorly or is improperly tuned, then it would run as you described. Otherwise, the car should have full power and response immediately at WOT.

yeah, okay. :laugh_ti:

 

[shoteen95]

my car's never seen WOT

usually it accelerates faster at WOT than at half throttle tho..

but going WOT from a stop..i can see that not helping..my car will spin its tires if i get on the gas too quickly..without going WOT..burning out from a stop sign is not one of my ambitions..and i'm sure my car would not enjoy it..actually..my car's never been "launched" at WOT..

 

[stevemainian]

Take you car, go out on the street, now sit there. Then as fast as possible, take your foot off the brake and slam the gas to the floor.

I bet not much will happen.

 

[AutoSHO]

Take you car, go out on the street, now sit there. Then as fast as possible, take your foot off the brake and slam the gas to the floor.

I bet not much will happen.

If not much is happening, your car is not running properly. Even at WOT the ATX advances the timing until it hears detonation, and keeps trying to advance the timing up to a set amount.

The computer also does not 'ignore' all sensors at WOT. It is still using the MAF, ECT, TPS, Knock Sensor, Intake Air Temp Sensor, and most other sensors as well. The only thing it 'ignores', so to speak, is the oxygen sensors, because it goes into open loop instead of closed loop.

 

[spazmoid]

Ya this all makes sense guys. Late last year the car was running completly crappy because the MAF was gummed up with stuff, probably oil from the k&n and i fixed that by spraying some contact cleaner on it. It definetly does seem faster when accelerating at 3/4 or so throttle, anything more just seems like overkill cause it's not as snappy. The throttle cable's not stretched either, i checked, but does anyone know what that little plastic thing, thats attached to another cable next to the throttle is for? It moves with the throttle. Alright thanks everyone

 

[hawkeye18]

I've found that when you snap it WOT, the fuel gets so freakin' rich that it bogs the engine down below 2.5-3K rpm. Plus, it just spins the tires. I'm determined that a 3/4-5/8 throttle application for the first second or two, then going to WOT gets things the best. WOT and 3/4 give about the same acceleration below 3K, but then WOT is clearly the better choice, and it takes the engine up to about 7200 before it shifts (thanks, ted b! )

 

[K-Dawg]

but does anyone know what that little plastic thing, thats attached to another cable next to the throttle is for? It moves with the throttle.

Cruise control.

 

[stevemainian]

I've found that when you snap it WOT, the fuel gets so freakin' rich that it bogs the engine down below 2.5-3K rpm. Plus, it just spins the tires. I'm determined that a 3/4-5/8 throttle application for the first second or two, then going to WOT gets things the best. WOT and 3/4 give about the same acceleration below 3K, but then WOT is clearly the better choice, and it takes the engine up to about 7200 before it shifts (thanks, ted b! )

My point exactly.

 

[Sho-Driver]

My point exactly.

Please read further into AutoSHO's post. You should have a snappy WOT, even from a stop.

If not much is happening, your car is not running properly. Even at WOT the ATX advances the timing until it hears detonation, and keeps trying to advance the timing up to a set amount.

The computer also does not 'ignore' all sensors at WOT. It is still using the MAF, ECT, TPS, Knock Sensor, Intake Air Temp Sensor, and most other sensors as well. The only thing it 'ignores', so to speak, is the oxygen sensors, because it goes into open loop instead of closed loop.