Hi i need some help i had 2 Apexi N1 i got bored of it n switch it to hks hi power ti turbo i left my car there at the shop to be done while i was at school went baack every thing look good and payed the guy i then went to test my new exaust it sounded alot deeper but i felt lost in horse power i then went home n look at my exaust n when i looked inside my exaust n saw this and im guessin this is the reason why i lost power but not sure if it is but i apperciate it if yu guys can help me on this.

 

What do you mean?? Because of the straight thru design?

 

no if yu look in the picture at the back you will see the piping that goes in to the muffler is angled which is blocking the starit thru design

 

umm your piping is supposed to be bent in certain areas to fit with the original piping...

actually if it was straight thru ignoring where the hangers are and shields, you'd probably lose power.


i think the first thing you want to check is what's the piping diameter for everything. 2.5" all around is max for cars with no boost. if you have 3" piping ...well it's not breathing properly.

 

+1

find out what diameter the piping is.

 

it is 2.5'' piping

 

like if yu look at the pictire ita at the back the pipe that goes into muffler is angled where when it goes out of the exaust it hits the wall of the exaust then it comes out

 

well looks to me like their bends suck ass... whatever happend to 90 degrees?

 

yea do you know if this i how im losing power????

 

could well be, you have to make sure that if they crush bent they didn't over bend... because a crush bend alters the diameter of the tubing...

also you have to make sure where they welded the 2 sections together they overlapped them, because a direct weld on 2 pipes creates restriction aswell...

all these factors could be the cause, or it could well be you have to do something as simple as reset the ecu

 

yea i just logged on, cuz i remembered ~ you probably didn't reset the ECU....try that first.

also if this guy was really shitty, stillhere's right, if he crushbent, your airflow is messed up, uneven surfaces all the way fromt he down pipes to the exhaust tips in the end will definitely create a feel-able loss in power.