Please note that a larger TB's only possible positive effect, if everything is tuned for it, will be at the extreme upper end of the possible RPM range.
As long as the air the engine can ingest is not restricted by the max opening of the TB there is no advantage in having a larger one.
Also...
Idle is whatever you get after the TB is closed, trying to control that with opening the TB would result in erratic or high idle (as is shown in some tunes)
And not knowing how the OEM tune is set up I would not make absolute statements on how it will react to inputs.
But If a driver observes...
It is your truck, set it up anyway you like it.
But if all I wanted is to lower the rear, I'd cut down (or remove) the blocks between the springs and the axle.
I Think 'BadRap' is correct in his observations, but so is everyone else...
First: the idle is likely a throttle body bypass passage, if there is no adjustability it needs to be opened up.
The rest I think is simple 'cause and effect'
The OEM tune has a initial slow response to throttle input...
Adding a spacer to the top of the shock assembly will result in excessive down travel of the front suspension.
Excessive down travel adversely effects: upper control arm, spring, Spindle, upper and lower ball joints, inner and outer drive shaft universal joints.
Setting the OEM shocks to...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.