S4 Throttle Body Mod and TPS questions
#1
Full Member
Thread Starter
S4 Throttle Body Mod and TPS questions
I have an S4 Tii that I am doing the throttle body mod on. I have some questions.
what is this for, seems like it stops the blades? Is this needed, not mentioned in the guide.
i
I am removing the omp system, what should I do with its lever? Take off the bolt and slide it off?
also if anyone knows a forum about making a mount for a gm tps, I imagine it will go on the bolt sticking out there, and I can remove most of it…
thanks
what is this for, seems like it stops the blades? Is this needed, not mentioned in the guide.
i
I am removing the omp system, what should I do with its lever? Take off the bolt and slide it off?
also if anyone knows a forum about making a mount for a gm tps, I imagine it will go on the bolt sticking out there, and I can remove most of it…
thanks
#2
Rotary Freak
It's worth saying that the throttle body mod does more harm than good (unless it's a racecar, or when using a standalone computer).
With that said, the first part you photographed there is the dashpot. It slows the throttle blades closing when you lift off the throttle quickly. You can remove it.
The OMP lever can be left as-is, and won't hurt anything. You could remove it, but I think it might mess up the spacing. So if you 100% want to remove it, I would cut the arm part off of the center part and leave the center part in place.
EDIT: I was using a Mustang TPS for awhile. You can buy an adapter kit online (JDL manufacturing), or you can 3D print one (see the thread in this section for 3D printed parts). It does stick out some, but isn't a problem as long as you have the stock alternator.
With that said, the first part you photographed there is the dashpot. It slows the throttle blades closing when you lift off the throttle quickly. You can remove it.
The OMP lever can be left as-is, and won't hurt anything. You could remove it, but I think it might mess up the spacing. So if you 100% want to remove it, I would cut the arm part off of the center part and leave the center part in place.
EDIT: I was using a Mustang TPS for awhile. You can buy an adapter kit online (JDL manufacturing), or you can 3D print one (see the thread in this section for 3D printed parts). It does stick out some, but isn't a problem as long as you have the stock alternator.
#3
Full Member
Thread Starter
It's worth saying that the throttle body mod does more harm than good (unless it's a racecar, or when using a standalone computer).
With that said, the first part you photographed there is the dashpot. It slows the throttle blades closing when you lift off the throttle quickly. You can remove it.
The OMP lever can be left as-is, and won't hurt anything. You could remove it, but I think it might mess up the spacing. So if you 100% want to remove it, I would cut the arm part off of the center part and leave the center part in place.
EDIT: I was using a Mustang TPS for awhile. You can buy an adapter kit online (JDL manufacturing), or you can 3D print one (see the thread in this section for 3D printed parts). It does stick out some, but isn't a problem as long as you have the stock alternator.
With that said, the first part you photographed there is the dashpot. It slows the throttle blades closing when you lift off the throttle quickly. You can remove it.
The OMP lever can be left as-is, and won't hurt anything. You could remove it, but I think it might mess up the spacing. So if you 100% want to remove it, I would cut the arm part off of the center part and leave the center part in place.
EDIT: I was using a Mustang TPS for awhile. You can buy an adapter kit online (JDL manufacturing), or you can 3D print one (see the thread in this section for 3D printed parts). It does stick out some, but isn't a problem as long as you have the stock alternator.
Thanks for this info. I am going with a standalone, so figured might as well get rid of some of the stuff. Ill remove the dashpot. I am using a DCpower alt, so I am not sure if that mount would fit, I could print one up and do a mock test.
Thanks!
#4
Rotary Freak
Not sure with the DC power. It also has to do with the adapter bracket I'm using for my Taurus alternator, so different brackets might help as well. My bracket pushes that side of the alternator up a bit higher than it needs to be.
A standalone is nice because it makes most of the throttle body stuff unnecessary, and also tuneable.
The stock throttle body has all of these extra parts, presumably to take the onus off of the ECU. I'm guessing they had only so much processing power, so things like using the coolant sensor and BAC to control warmup idle, or using the BAC to emulate the dashpot are beyond the stock ECUs capabilities.
A standalone lets you delete everything other than the TPS and the OMP without any consequence. Plus you can tune the above functions to your liking. You'll really like how much easier diagnosis is when everything is controlled centrally.
A standalone is nice because it makes most of the throttle body stuff unnecessary, and also tuneable.
The stock throttle body has all of these extra parts, presumably to take the onus off of the ECU. I'm guessing they had only so much processing power, so things like using the coolant sensor and BAC to control warmup idle, or using the BAC to emulate the dashpot are beyond the stock ECUs capabilities.
A standalone lets you delete everything other than the TPS and the OMP without any consequence. Plus you can tune the above functions to your liking. You'll really like how much easier diagnosis is when everything is controlled centrally.
#5
Full Member
Thread Starter
Not sure with the DC power. It also has to do with the adapter bracket I'm using for my Taurus alternator, so different brackets might help as well. My bracket pushes that side of the alternator up a bit higher than it needs to be.
A standalone is nice because it makes most of the throttle body stuff unnecessary, and also tuneable.
The stock throttle body has all of these extra parts, presumably to take the onus off of the ECU. I'm guessing they had only so much processing power, so things like using the coolant sensor and BAC to control warmup idle, or using the BAC to emulate the dashpot are beyond the stock ECUs capabilities.
A standalone lets you delete everything other than the TPS and the OMP without any consequence. Plus you can tune the above functions to your liking. You'll really like how much easier diagnosis is when everything is controlled centrally.
A standalone is nice because it makes most of the throttle body stuff unnecessary, and also tuneable.
The stock throttle body has all of these extra parts, presumably to take the onus off of the ECU. I'm guessing they had only so much processing power, so things like using the coolant sensor and BAC to control warmup idle, or using the BAC to emulate the dashpot are beyond the stock ECUs capabilities.
A standalone lets you delete everything other than the TPS and the OMP without any consequence. Plus you can tune the above functions to your liking. You'll really like how much easier diagnosis is when everything is controlled centrally.
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