I was wondering about bleed valves for Turbo'd cars. This seems a cheap and quick was to up the boost on a Turbo'd car......thing is, are they dangerous as in can give to much boost and do engine/turbo damage or is it a cheap and effective way of getting more power without having your car chipped?

 

Had a bleed valve on my car for a year and set the boost to what it was before i fitted it.I dont think its dangerous if you do it that way.

 

cars will normally have a boost limit to stop any major overboost, ie; split pipe etc, you can only normally raise the boost a bit before you hit the standard boost limiter. a bleed valve is a great bit of kit if treated with respect, there crude but they work, great on cars like RS Turbo's where if you were working on it on a dyno you would have to remove the car from the dyno, jack it up & wait for it to cool down before adjusting the boost on the actuator, with a bleed valve you could just turn the knob a small amount & try another run!
the big problem with them is, people mess with them, crank the boost up but then theres not enough fuel to have a correct mixture, this normally leads to det or high heat then pistons normally start to melt............

 

Never seen the point myself, when power can be controlled with right foot.
tabetha

 

bleed valve also known as 'dial a rebuild'

 

A bit of reading and mixed answers for ya mate https://passionford.com/forum/general-car-related-discussion/281756-erst-chipping-and-use-of-bleed-valves.html

 

That's so true, i've even seen people play with other peoples at shows which is just not right