hey guys
have a JDM ITR swap done; with 2.5'' custom dual exhaust; high flow catco cat; jdm dc sports 4-1 header, aem cai, ngk wires and sparks
exhaust just installed; custom stainless with mangaflow mufflers.
getting slight backfire when i lift my foot off accelerator..
wondering if its the exhaust setup..or...?
how to most efficiently figure this out?

anyone in Cleveland, OH that could help..?

Peace

 

you don't have dual exhausts do you? any way if its just a popping sound it's pretty normal if you have a free flowing exhaust

 

you're hindering the performance of a great engine with duals :down:

 

 

how are you hindring the performance with dual exhaust...more flow, better power, isn't that the rule? Please xplain

 

an inline four engine does not need dual exhausts...period. duals on an inline 4 will restrict flow.

 

A car backfire can be caused by alot of thing. Because you have the dual exhaust is most likely why it is happening.

You dont have enough back pressure so the exhaust valves are floating (meaning they arent closing all the way) the exhaust will warp the valves, even if they close all the way they wont completely seal.

When the piston compresses the air, and the fuel is injected into the cylinder, some of the fuel/air mixture escapes out of the un-sealed exhaust valve. When the spark for that cylinder fires, it ignites the gas inside your exhaust.

To gain back pressure take off the dual exhaust, you dont need em', if you leave it the way it is you will lose all compression in that cylindar(s)

Hope this helps