I installed my 9 psi KB kit a while ago and have been having tons of fun since. I do have some questions regard boost, my boost gauge etc. that I do not understand.
When cruising in lower rpm's I see no boost. When I step on it I will start to see boost. But, in 1st gear my boost gauge is barely coming up to 0, in 2nd and 3rd I might get it to 4-5 and in 4th I get closer to the 9 psi that the kit is rated at.
I was under the impression that this kit would give me 'instant full boost' I was not aware that it was only in 4th gear. I asked KB about this and this is what they answered me:
If you ever get the chance to see a dyno run all the way through the gears, you will see the horsepower increase for each gear. There is less horsepower because of the gearing and torque multiplication. This phenomena holds true for boost as well. It requires less hp in each gear (lower) since a lot of the work is being done by the gears. Once there is a 1:1 ratio, this is where the most hp on the dyno will be seen. After the 1:1 ratio is exceeded, say .60:1 in overdrive, the horsepower to the wheels will decrease, but the boost begins to increase. The engine now is required to do the most work (the most airflow) at WOT, so the higher the gear, the more boost.
is this correct? Can someone with a KB tell me if this is how your system works aswell?
Thanks. Joe
When cruising in lower rpm's I see no boost. When I step on it I will start to see boost. But, in 1st gear my boost gauge is barely coming up to 0, in 2nd and 3rd I might get it to 4-5 and in 4th I get closer to the 9 psi that the kit is rated at.
I was under the impression that this kit would give me 'instant full boost' I was not aware that it was only in 4th gear. I asked KB about this and this is what they answered me:
If you ever get the chance to see a dyno run all the way through the gears, you will see the horsepower increase for each gear. There is less horsepower because of the gearing and torque multiplication. This phenomena holds true for boost as well. It requires less hp in each gear (lower) since a lot of the work is being done by the gears. Once there is a 1:1 ratio, this is where the most hp on the dyno will be seen. After the 1:1 ratio is exceeded, say .60:1 in overdrive, the horsepower to the wheels will decrease, but the boost begins to increase. The engine now is required to do the most work (the most airflow) at WOT, so the higher the gear, the more boost.
is this correct? Can someone with a KB tell me if this is how your system works aswell?
Thanks. Joe
(stock block obliges...)
