What Did You Do To Your Car Today?

[weendoggy]

Couple of pics from yesterday. Overall good time. Still need some upper end tuning but got really close. Experimenting with acceleration tables. Otherwise, a clean day for me, others no so much. Last session I ended mine one lap early, good thing too, a C5 Corvette found the outside tire/concrete wall after T3 and totalled the entire front end. I may have been close to that incident if I proceeded. I'll work on my videos this week. Still have to finish Thunder Hill ones.


Coming out of T6 up Rahal Straight. Open road, smooth sailing. I take that corner at 70-75mph. What a rush in compression and HP!



The 911 was much faster, but given all the new technologies over my homebuilt project, I'm o.k. with that. Wonder how the driver would do going back about 60yrs in technology?

 

[Daryl]

Couple of pics from yesterday. Overall good time. Still need some upper end tuning but got really close. Experimenting with acceleration tables. Otherwise, a clean day for me, others no so much. Last session I ended mine one lap early, good thing too, a C5 Corvette found the outside tire/concrete wall after T3 and totalled the entire front end. I may have been close to that incident if I proceeded. I'll work on my videos this week. Still have to finish Thunder Hill ones.

View attachment 49937
Coming out of T6 up Rahal Straight. Open road, smooth sailing. I take that corner at 70-75mph. What a rush in compression and HP!

View attachment 49938

The 911 was much faster, but given all the new technologies over my homebuilt project, I'm o.k. with that. Wonder how the driver would do going back about 60yrs in technology?

Definitely agree on that. What engine/displacement are you running in the Cobra? I’ve always wondered how much fuel you need to take to the track?

 

[RAU03MACH]

What exactly is sticky shit? Is it like a Klingon?

Im not sure but it pitted the paint on my bumper
When I washed it
To the touch it was like tree sap
Or road grime of something
Don't know

 

[weendoggy]

Definitely agree on that. What engine/displacement are you running in the Cobra? I’ve always wondered how much fuel you need to take to the track?

SBF 347 Ford Boss Block Big Bore. Holley HP/Terminator (not the newer model). I can easily run all day (4-5 sessions of 20min.) on one tank (16gal). I get around 7-8 mpg on track.

 

[Daryl]

Taking the car to my tuner (Full Throttle Customz) right after work today, around 1:30. If they can get right on it, I’ll wait for it there. If not, UBER home. I’ll share diagnosis and results. I need to pass CA smog. Initial smog test run showed me about 5x the max on CO2. Smog guy suspects an injector may be stuck open. We’ll see what the wide band says. Fingers crossed it isn’t something too expensive.

Quick update: I guess there’s more to it than just replacing and bolting on the EGR, TPS, IAC sensor and IAC motor! Tuner will fix all that. He also said that the smog check guy shouldn’t have even ran a test with the CHECK ENGINE light on because the car goes into a “sleep” mode that runs rich. So, I left the car with him and hope to hear back tomorrow.

 

[Snorky]

That color is so freaking hot

 

[Daryl]

RESULT!… I got the car back today and here’s a photo of the corrections made:

 

[07GtS197]

Even a shop believes in the tps 1v myth, geez. And they set it to .4v for some reason. It’s good they fixed your car though.

 

[Daryl]

You set the Throttle Position Sensor (TPS) to \(0.4 - 0.5\) volts at closed throttle on a 1995 Mustang Cobra to tell the computer the engine is idling. This prevents a high idle and allows the PCM to properly calculate the fuel mixture as you press the gas pedal.

 

[Musturd]

You set the Throttle Position Sensor (TPS) to \(0.4 - 0.5\) volts at closed throttle on a 1995 Mustang Cobra to tell the computer the engine is idling. This prevents a high idle and allows the PCM to properly calculate the fuel mixture as you press the gas pedal.

That’s how you set the tps doesn’t matter that it’s a cobra

 

[07GtS197]

They’re not adjustable but let’s leave that discussion for another thread.

 

[RAU03MACH]

TPS
not adjustable
if it was adjustable, it would have oblong holes for the mounting screws so it could be turned
but tps wasn't ment for that
no such animal
just saying

 

[Musturd]

TPS
not adjustable
if it was adjustable, it would have oblong holes for the mounting screws so it could be turned
but tps wasn't ment for that
no such animal
just saying

They do have oblong holes so they can be adjusted

 

[RAU03MACH]

I haven't seen any
Even when I worked the dealership there were none
I have never even heard of ajust tps
When did they start making them

 

[Daryl]

If they’re not adjustable, why have so many here said they need to be set between.5-.98v?

 

[shovel]

We dang close yall, probably going to take it for its first drive tomorrow after work!





Carb or TBI under the stock hood, ha!

 

[Musturd]

I haven't seen any
Even when I worked the dealership there were none
I have never even heard of ajust tps
When did they start making them

You blind or something ? Or hands In Pocket kinda guy

 

[RAU03MACH]

Im used to the dealership i guess
We were tought not to make changes or alter any electrical components
That's just the way I learned
But things do change
Tech side is getting better
There are parts out there i haven't heard or seen
But im am getting older close to retire thank god
I still do old school stuff love carbs
Still work on older cars once and a while
So hands definitely not in these pockets

 

[RAU03MACH]

If they’re not adjustable, why have so many here said they need to be set between.5-.98v?

At the dealership there is no such thing
I dont touch them unless there faulty

 

[07GtS197]

It’s been proven they do not need to be adjusted. The ecu will accept any value between .5v and 1.1v as baseline when the key is turned. Out of that it will throw a code.

The reason this myth even came to be is when people used aftermarket throttle bodies on their Mustang that were machined to different tolerances. Think about it, if the TPS bolts are in a slightly different location than factory, then the tps will sit in a slightly different location with the throttle plate in the same location as factory. It’s not the sensor itself that’s the issue, it’s a machining issue.