Just curious... given that the "Blow Off Valve" in these cars vent back into the air intake, would I be right in saying that this air had been compressed and as a result is hot air... and given that when you change gears, (auto or manual), some air is vented. Are you then sucking in hot air, for a split second, that is going to be compressed again and heated again.

I'm asking this because would you notice any difference if you could vent the air away from the intake, and hence suck some fresh (colder) air... would this increase initial throttle response when changing gears??? or it's so short you wouldn't notice?? I'm thinking that heated air may retard timing, just when you want it to be advanced???... this would have to be the case with most Turbo (with VCT also), regardless of the type of car (assuming they vent the same of course)

the blow off valve and pipe work is mounted in the duct next to the throttle body so the air is no hotter than what comes out of the intercooler, so it makes no difference. Make the intercooler work better if your worried about air temp. Use a water spray when on full boost or something

water sprays that just come on at full boost simply don't work in my experience.

Haven't tried the "intelligent" sprayers that are talked about on sites like www.autospeed.com.au but they make a great deal of sense.

I've just never had any luck with water sprays, that's all.

Just curious... given that the "Blow Off Valve" in these cars vent back into the air intake, would I be right in saying that this air had been compressed and as a result is hot air... and given that when you change gears, (auto or manual), some air is vented. Are you then sucking in hot air, for a split second, that is going to be compressed again and heated again.

I'm asking this because would you notice any difference if you could vent the air away from the intake, and hence suck some fresh (colder) air... would this increase initial throttle response when changing gears??? or it's so short you wouldn't notice?? I'm thinking that heated air may retard timing, just when you want it to be advanced???... this would have to be the case with most Turbo (with VCT also), regardless of the type of car (assuming they vent the same of course)

hehe have you thought of running a small water-to-air heat exchanger for your charged air out from your BOV?

You'd be the first!

You can change your BOV for an external venting one, however, it will screw up your AFR because the air that is venting has already been measured for intake so it needs to go back to keep the AFR accurate.

The air that is vented has already gone through the intercooler at any rate.