Throttle slowdown dashpot useless now?

ASSISTANCE Forced Induction
1

So I have my turbo installed and running, however when you give it a little gas and let go, the idle quickly drops then comes back up to idle fine. Im thinking this is due to the throttle dashpot being unhooked. On my intake piping, the hole where this was hooked normally has been plugged.

I tried hooking it between the vacuum going into the throttlebody, but when I started the car, the dashpot actuated and took my idle to 2k. Am I hooking it to improper vacuum or do I have to run my car without the dashpot? I have the black cylinder in between the line as well. Im assuming this is a check valve?

For now, I have it unhooked but would really like it to work so my rpms fall slowly like they should when you come off the gas.

Thanks everyone
MantisX

2

i think you want to hook it up to the intake preturbo

3

the only function of the dash pot is to slow the throttle as it snaps shut so it doesnt stick…its useless in my opinion

4

What is the correct way for the check valve to be pointing?

Al

5

Pointing to the inside of a spare parts box. Take it off, especially if you’re turbo. You want the BOV to react as fast as possible.

6

Im NA at the moment, and my idle still does as described in the OP. Everytime I let off the throttle, it will drop to ~400rpm, then bump back up to ~750rpm.

Its annoying, but I believe xenocron has it right, its useless. The only one I have seen work correctly, is one on my 70 Cutlass, and it was not vacuum actuated, it was a closed dashpot, with spring. Maybe I will pull one of those from a junkyard, and try it? They are common on any 70’s V8 domestic that is stock.

7

mine have always worked. when i let go of the throttle it drops to around 1500-2000 rpm stays there for 1-2 seconds then drops to idle.

8

i always just adjust the iacv in crome since i run a chipped ecu and it solved my problem and like xenocron said that dashpot is usless i took mine off as soon as i got my car