Back Pressure Ek9


kilo1onedelta

kilo1onedelta

Member
Joined
Mar 10, 2013
Messages
162
What diameter should I be looking at getting my naturally aspirated ek9 to give me max back pressure?
 
Start with 1cm diameter, if the engine won't run at all go a bit bigger until it runs. If 1cm won't give you enough back pressure then reduce the diameter until the engine simply won't run and then you'll know the limit. Just out of curiosity - why do you want maximum back pressure???????
 
I'm currently running a twinloop system 2.5"
I was wondering if I was getting full exhaust potential.

Why wouldn't you want max back pressure?
 
Back pressure is bad. You want to expell exhaust gases as effiently as possible.
 
2.5 inch exhaust is what you want if it's a standard engine with bolt ons it's been proven time and time again but if you need it confirm pm vtec6000 on here a very well known mapper!twin loop isn't very free flowing But wouldn't really bother changing it unless your considering more mods or tuning in the future then I'd consider going bigger.
 
As above, 2.5" exhaust and be happy with it.
 
I recently changed from a skunk2 megapower r system which is 2.75" to a two loop and have noticed zero performance loss. Plus my ears aren't bleeding anymore!
 
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