Does anyone know how much boost the knight sports RF 420's can run safely, im told 1.4 but id rather be safe before i crank it up

cheers!

 

"Safe" has more to do with your charge temps and fuel support rather than what the turbos can take.

 

I mean in general, say I had an all singing all dancing 7 with all the supporting mods. Im curious to know what the max safe boost is for the 420's

 

The problem is that question cannot be answered with a hard and fast rule. The best idea (ignoring fuel support) is to monitor your charge temps. If you begn to push the turbos so much that your charge temps are going crazy, then you are going too far. That could either be an intercooler limit or the turbo limit but once you get there you would have to do that evaluation yourself. There is a point at which turbos generate more heat than power, that's the limit you are basically asking about.

Unfortunately, not many people in the USA have experience with Knightsport turbos (and this forum is predominately US based). So, you might have to do your own experiments to figure out the limit for your individual car.

 

BOOM!...

 

Ive reached the limmit on my car already due to stock ports, I am currently producing 436.4 FWHP at 0.9 bar. Many thanks for your constructive replies Mahjik i'll slap the same Q up on MRC as well