Originally Posted by
stevieturbo
That's some serious work. Must be pushing for well into 4 figure power ?
You are quite right. It doesnt really make much sense at all. The only reason you'd have a large IC exit, is to help smooth the flow from the end tank into the pipework. But that's more IC design than plumbing.
It also makes no sense for people to fit ridiculously large TB's either, yet most do it. I seen a local guy here with a GT4 and he...well, his "tuner" had fitted some 95mm TB to it. Seriously...a 400bhp car with a TB capable of 2000bhp. Intelligent. Open the throttle more than 30% and it's letting in all the air the engine could ever consume.
If the plumbing had loads of bends, it could make sense to make it bigger simply to account for the restrictive nature of the bends compared to a straight pipe. But in that respect, Cossies are very good. 1 bend from turbo to IC, and no bends on the IC to TB
I totally agree with you,
The throttle body thing does my head in, I think people forget that the throttle body is feeding the inlet ports which are tiny in comparison lol. (yes I know we have four inlets on our 4pot, but only one of these is breathing at a time, well maybe a bit more with a bit of overlap)