VRIS Solenoids in Turbo Application

Tommy D · Post by **Tommy D** » February 14th, 2006, 9:21 pm

One thing has been bugging me for a while...

I had probs with my VRIS solenoids when i did my swap bacause the vaccum source pipe on the belt side of the engine wasnt connected to the I/M and on the other side the vaccum chambers under I/M.

When engine is running there is a vaccum in the I/M because of air displacement on a piston induction stroke. This vaccum under accel or load is the vaccum source that operates the VRIS solenoids. However if you turbo your engine, there will no longer be a vaccum in the IM under boost, but instead the opposite. Therefore the solenoids wont open.

How do we keep the solenoids working? or do you jam them open in Turbo application? as im sure they do something internally?

Cheers

XxantwawnxX · Post by **XxantwawnxX** » February 15th, 2006, 9:23 am

Ive did a lil reseach on this and ive found that the best option is th etie both vris sols open . now thats the directions i keep getting from people (i did get others like tie one open or whatever). although both seemed to produced better results.

Post by **Custommx3** » February 15th, 2006, 2:51 pm

A local Probe guy here when we did his turbo... removed the VRIS flaps because they caused restriction.

Mnemonic · Post by **Mnemonic** » February 18th, 2006, 3:07 pm

Custommx3 wrote:A local Probe guy here when we did his turbo... removed the VRIS flaps because they caused restriction.

DynoLabs here in Georgia built a turbo kl03 motor and they did teh same thing removed the flaps and they also found a box that would plug into the vaf to eliminate that

babyblueMX3 · Post by **babyblueMX3** » February 18th, 2006, 6:14 pm

same here I removed everything related to the vris and welded the holes shut!

XxantwawnxX · Post by **XxantwawnxX** » February 18th, 2006, 7:20 pm

I hear you can use MSnS to control when the flaps open...so just have MSnS to overide the flaps and keep them open under boost(3000 or so rpm depending on alot of factors)

slimmyslim1420 · Post by **slimmyslim1420** » February 18th, 2006, 10:29 pm

Would there be a power difference between having the flaps permanently open and having them completely closed off?

XxantwawnxX · Post by **XxantwawnxX** » February 19th, 2006, 12:59 am

Accorind to people if your valves are closed while you under go boost you will hamper pefomance.

max kl · Post by **max kl** » February 19th, 2006, 4:11 pm

if your vacume reservoirs do noy leak and the ckeck valve workes the virs will still work. there is very little vacume in the im at wot with a na motor the check valve keeps vacume in the reservoirs to maintain virs opperation
on a stock set up.

slimmyslim1420 · Post by **slimmyslim1420** » February 19th, 2006, 8:39 pm

babyblueMX3 wrote:same here I removed everything related to the vris and welded the holes shut!

Would this be considered open or closed?

XxantwawnxX · Post by **XxantwawnxX** » February 19th, 2006, 9:44 pm

Open..he took the valves out.

PWRD_BY_HKS · Post by **PWRD_BY_HKS** » July 29th, 2007, 3:40 pm

What about that little hose that runs under the manifold. Also v ris related what do you do with that one. Or will it be all good as long as the silenoids stay open.

blackops032 · Post by **blackops032** » August 1st, 2007, 7:01 pm

it will be fine as long as the solenoids stay open. or just remove them