This weekend I replaced my stock throttle body with the throttle body from a Dodge Viper. This change has been previously discussed on this forum here and here.
Here are my thoughts and a few pics . . . .
Install. Very, very easy. The connection to the motor reuses the same bolts and the sensor plugs into the throttle body in the exact same way. The fit is perfect. The connection to the intake hose was a little harder. The viper throttle body is about 3" across, compared to about 2" for the stock intake hose and stock throttle body. There are several ways to get this to fit (check out the links above), but I took a different route. I have an aftermarket intake (discussed here) that matches up to the viper throttle body perfectly. All I had to do was stop by Lowes and pick up a 3" flexible coupler in the plumbing section. You can see it in the pic showing the completed install.
Results. I can't say I've gotten much more power. The results with my intake (again, here) were more pronounced in that regard. Gas mileage has also shown no change. However--and this is going to be hard to describe--the engine sounds and feels much, much smoother. The sense of laboring to progress through the sub-3500 RPMs is diminished greatly. The engine is also much quieter when up to speed. Simply put, the engine sounds and feels like it is having a much easier time hauling around this big 4 door JKU. In that sense, perhaps I have gotten some more power. More torque maybe. Hopefullly one of the resident engine buffs can explain. Incidentally, the switch also solved a "whistling" problem that had been driving me crazy. (See here.)
Overall. Including shipping, the viper throttle body was $140 from the Mopar Supercenter (here). So far, I'm satisfied with that deal. The smoothing out of the RPMs and overall sense that the engine isn't working so bloody hard is a big improvement. Of course, because I've also installed an intake and a chip (discussed here), it's hard to specifically attribute any results to the new throttle body alone. I'm inclined to think it is working in conjunction with the air intake, particularly given how well the two match up from a size perspective. On the other hand, I recall at least one of the other installs of a viper throttle body linked above did so with the stock intake, and they claimed significant results.
Attached are pics of (1) the stock TB after I detached the intake hose, (2) a front view of a side-by-side comparison, note how much larger the bore is on the viper throttle body, (3) a rear view of a side-by-side comparison, and (4) a pic of the completed install.
I'm open it to the floor for comments, questions, further analysis, whatever! :thumb:
Here are my thoughts and a few pics . . . .
Install. Very, very easy. The connection to the motor reuses the same bolts and the sensor plugs into the throttle body in the exact same way. The fit is perfect. The connection to the intake hose was a little harder. The viper throttle body is about 3" across, compared to about 2" for the stock intake hose and stock throttle body. There are several ways to get this to fit (check out the links above), but I took a different route. I have an aftermarket intake (discussed here) that matches up to the viper throttle body perfectly. All I had to do was stop by Lowes and pick up a 3" flexible coupler in the plumbing section. You can see it in the pic showing the completed install.
Results. I can't say I've gotten much more power. The results with my intake (again, here) were more pronounced in that regard. Gas mileage has also shown no change. However--and this is going to be hard to describe--the engine sounds and feels much, much smoother. The sense of laboring to progress through the sub-3500 RPMs is diminished greatly. The engine is also much quieter when up to speed. Simply put, the engine sounds and feels like it is having a much easier time hauling around this big 4 door JKU. In that sense, perhaps I have gotten some more power. More torque maybe. Hopefullly one of the resident engine buffs can explain. Incidentally, the switch also solved a "whistling" problem that had been driving me crazy. (See here.)
Overall. Including shipping, the viper throttle body was $140 from the Mopar Supercenter (here). So far, I'm satisfied with that deal. The smoothing out of the RPMs and overall sense that the engine isn't working so bloody hard is a big improvement. Of course, because I've also installed an intake and a chip (discussed here), it's hard to specifically attribute any results to the new throttle body alone. I'm inclined to think it is working in conjunction with the air intake, particularly given how well the two match up from a size perspective. On the other hand, I recall at least one of the other installs of a viper throttle body linked above did so with the stock intake, and they claimed significant results.
Attached are pics of (1) the stock TB after I detached the intake hose, (2) a front view of a side-by-side comparison, note how much larger the bore is on the viper throttle body, (3) a rear view of a side-by-side comparison, and (4) a pic of the completed install.
I'm open it to the floor for comments, questions, further analysis, whatever! :thumb: