Im getting read to put my '98 USDM GSR motor in my 99 hatch. The exhaust I want is on backorder for about 6-8 weeks. I was wondering how bad performance will be affected by using the stock CX civic exhaust with the stock GSR header until i can get my Buddy Club Spec II exhaust in??

I know it wont HURT the motor, I was just wondering if its gonna make the car feel alot slower??

thanks
chris

 

I'd say its' costing you a minimum of 5-10 horsepower.

 

I rememeber reading on B18C to CX/VX swaps saying that the stock exhaust was going to choke the flow quite a bit, like breathing (or more like farting ) through a straw.