Deleting secondary throttle plates?

[ShawnZR-1]

Originally Posted by petefias

Cannot that be programmed out, so it won't throw a code if disconnected?

Why would you want to mess with all those stupid vacum lines, connectors, solenoid, sensor and pump?

The way I see it on the MY95, without the reprogramming, you need at minimum the vacum pump, secondary air inlet solenoid and vacum sensor or you'll get a code during sustained WOT.

Ask me how I know it.

I would think it could be programmed out but it's not in any of the available Tuner* mask files. Maybe Todd would have some insight on this

[lbszr]

Is the outboard end of the throttle shaft hole a deadend or does it need plugged as well as the inboard end?

And can they be removed without removing the breather box?

Originally Posted by Pete

My testing resulted in 5 RWHP gain and cleaned up nicely under the plenum.
Use Dorman freez plugs #555-108.

You won't feel the difference,espacially with stock small ports.
I felt no differance and my ports are huge for a 350ci,come drive it yourself.

On a totally stock chip our secondaries will open as low as 1500 rpm at WOT.

Yank them.
Benefits: FREE HP
Drawbacks: Nothing you will notice.

Pete

[Pete]

Originally Posted by lbszr

Is the outboard end of the throttle shaft hole a deadend or does it need plugged as well as the inboard end?

And can they be removed without removing the breather box?

The outbourd hole is a deadend no plug needed,unless you wanna fill it in with something it's only about an 1/8 inch hole.

The breather box does have to come out, unless you don't want your secondary shafts then you can bend the 3 or 4 front ones without taking the breather out.
You will probably remove the breather since most leak then you can silicone it and loctite the screws.

If you decide to do this and keep the secondary solonoid with vacuum pump then i would remove the solonoid from under the plenum
and mount it either close to the differential MAP or vacuum pump with a hard vacuum line they sell at local part stores cheap.
This way if it goes bad, no plenum pulling.

Pete

[lbszr]

Originally Posted by Pete

The outbourd hole is a deadend no plug needed,unless you wanna fill it in with something it's only about an 1/8 inch hole.

The breather box does have to come out, unless you don't want your secondary shafts then you can bend the 3 or 4 front ones without taking the breather out.
You will probably remove the breather since most leak then you can silicone it and loctite the screws.

If you decide to do this and keep the secondary solonoid with vacuum pump then i would remove the solonoid from under the plenum
and mount it either close to the differential MAP or vacuum pump with a hard vacuum line they sell at local part stores cheap.
This way if it goes bad, no plenum pulling.

Pete

Thanks for info, be pulling soon.

They've been deactivated but secured open, still kicking myself for not removing them last year when the heads were off.

[XfireZ51]

Shawn,

Does yours throw a code with the secondaries out?

[bradslt5]

I am not sure what exactly needs to be done to remove the secondaries . would it be possible to have someone give me a step by step on the removal process.also i am unsure if one must have their prom reprogramed