Changed Muffler Lost Boost - Honda Forum / Acura Forum

JRSCIntegraGSR · 07-27-2007, 12:43 PM

I had a 3 chamber muffler on my car that way it would be relatively quiet. I changed to a better flowing muffler (gs x10) But I noticed I lost some boost. I was running around 8 pounds now I am right below 7. Is this common? If not any ideas? Btw the car is running the same.

daveb91 · 07-27-2007, 07:54 PM

Better flow = lower boost.

JRSCIntegraGSR · 07-28-2007, 05:04 AM

Thanks!

DriftKingBP · 07-28-2007, 01:04 PM

does that mean that you loose power, or that the engine is just running more efficiently and doesent need as much boost?

daveb91 · 07-28-2007, 04:34 PM

it flows better so there not as much restriction therefore actual less boost. Not less power though. Usually you dont see a drop in psi becasue of a muffler more so with a change from stock manifold to a header. Or a ported head.

JRSCIntegraGSR · 07-30-2007, 07:26 AM

Wouldn't that accually mean more power.

daveb91 · 07-30-2007, 01:14 PM

Yes you dont loose power.