Difference in Y's
I'm sure everyone knows what the flowmaster Y looks like, heres the magnaflow:
the magnaflow just seems to "jam" together right there... however, i dont see there being a huge HP gain, but it looks like you are building a custom y...
for reference sake, here is a custom Y w/ the flowmaster
https://ls1tech.com/forums/attachmen...chmentid=41443
I'm sure everyone knows what the flowmaster Y looks like, heres the magnaflow:

To make it easier to understand, if you think about it a H pipe is really just an X with a large center section, but this means that where the two pipes join there is only a small cross section. On a true X the teo pipes will run paralle with each other giving a larger cross section where they are essentially one pipe.
A Y has similar properties and needs to be designed as such. The downside is the better flowing merge collectors are physically larger and take up more room.
HOWEVER
Unless you are building the ultimate exhaust system it really won't make any odds. What does a few (like 1-3hp) difference really make on a 400+bhp road car.
- ANSWER = very little.
On a full out cometitive race car then yes, every single pony is important.




