Hello a mate of mine has a small turbo cos with a ggr chip exhaust and air filter, before this he had a super chip that he didnt like, when the super chip was fitted the guy that did it said the boost sensor on the slam panel had to be disconected

Anyway since then he has fitted the ggr chip and with the boost sensor plugged in it goes off the gauge on boost( still has standard boost gauge) but with it disconected it touches the red and holds there.

So my question is should the sensor be plugged in with the GGR chip and what sould it boost to, and what is it safe to boost to on standard injectors etc.

Thanks

 

AFAIK the GGR chip requires the MAP sensor to be connected. The limit of the standard injectors is about 270bhp, to set the boost level properly you will need a rolling road session where air/fuel ratio and injector dutycycle can be monitored.

The stuff about disconnecting the MAP sensor for the Superchip is bull, the Superchip calibration doesn't use the MAP sensor so it makes no difference if the sensor is connected or not.

 

intresting, sounds alittle bit dodgy, id personally want it running so its all correctly connected up, not unplugging things, imo its abit pikey doing things this way

 

When i had a fiesta turbo, It was quite common with superchip conversions to have the boost sensor removed, they told me the sensors are not always that reliable therefore they just remove them and set the boost levels up by altering the actuator rod length.

If i'm correct the boost sensor doubles the boost (so if the sensor failed you would only get half the boost levels), if you have had the car set up for use without the sensor connected your actuator will be set for say 15psi, as soon as you connect it it will try and produce 30psi. One way to a blown engine.

It doesn't really matter if you have it connected or not as long as the max boost levels set correctly, my big turbo cos still uses the boost sensor

A rolling road will be able to set this up for you......

 

I think we're getting a little mixed up here There is the MAP (manifold absolute pressure) sensor and the amal valve. The MAP sensor detects the level of boost and the amal valve acts as a electronic bleed off valve. It has been said that the amal valve is weak but I known them to give no problems on levels of 30psi boost. If the amal valve fails it usually fails closed and you get less than maximum boost. The true reason why some tuners take them off is that they don't know how do alter the ecu code to allow for the extra boost (sloppy in my opinion when you pay good money to upgrade your car). Another downside of removing the amal valve is that it's also used to protect the engine e.g. not allowing full boost until up to temperature or in case of sensor failure.

 

Good point amal valve or map sensor ?, the car won't run without the map sensor so i assume Matt must be talking about the amal valve ??

Interesting fact about the amal valve there not allowing full boost till engine warm ......

 

Yes I thinks its the amal valve it is on the slam panel and one pipe goes to the turbo and the other goes to the inlet manifold i think.

So it doesnt matter if this is plugged in as long as the boost is right? or if it has it connet the boost needs turning down on the actuator so when its connected and it doubles the boost its doesnt blow the engine.

Also where would you recomend a set up around the wiltshire area?

Thanks

 

on a ggr conversion the amal valve should be connected up and working

 

their you have it

 

O.k thanks

So what psi/bar is safe to run on it, as I guess the actuator needs adjusting with the valve plugged in, as it curranly goes off the gauge

Thanks

 

I think anything over about 16psi will send it off the gauge but I may be wrong.