As all of you know in a configuration that have a JRSC and the JR FMU, the FMU have problems with correct read of the boost. This situation make that the FMU set more pressure that is needed and the car have more fuel that is neccesary. Some people solve this instaling a Cartech FMU... but other solution is to upgrade the Header/CatBack to make the read correct (the problem with the read is because the backpressure).

I'm in the process of change my Header, and I like to know what is the best Header I can buy to use in Autocross situation and not only for 1/4 mile times.

I know that the Kamikaze is the best for 1/4 mile (High end situation) but I like to know opinions about Greddy or DC Sport Headers for low/med RPM.

My car is a Acura Integra GS-R, JRSC, etc., etc.

Thanks in advance

 

JG Edelbrock. I compared JG with Greddy, DC Sports, and Apex. JG has slightly larger primaries and secondaries than all of them, and retains the 4-2-1 design to maintain torque. I wish I had the numbers with me, I think they are at work. If you call each company though you can get the exact specifications and JG was the largest. I also did not want a Kamikazee because of the strictly top end power, fitment issues, and its not CARB legal. The JG peice is expensive!! But the stainless steel peice that is unpolished is a thing of beauty in form and function.