83/86Rx7

iTrader: (2)

I have an '86 Rx7 N/A that's pretty much stock at the moment. New Act clutch will be arriving next week, and I'm looking to up-grade the stock exhaust. Dual Exhaust is a must and preferrably the louder the better. Currently I am thinking of Apexi's N1 Dual Exhaust with a Racing Beat Header. After reading a few threads about needing back pressure to open up the 5th and 6th ports I am thinking of a High Flow Cat, such as Bonez. Would Racing Beat's Presilencer from their Catalytic Converter Replacement Pipe with Presilencer Kit (Part Number: 16206) make a noticabe difference in Exhaust tone? I have Racing Beat's Full Header Back Exhaust on my 83 Rx7, and while I really noticed a horsepower/performace gain, I do not want my 86 Rx7 sounding like it, just a touch over stock tone. Farthermore, would Racing Beats Downpipe be able to supply enough back pressure to open the 5th and 6th ports? Any suggestions would be great.

Thanks in advance

{Edit} Went back and re-read the info on the Racing Beat Down pipe, answered my own question. It will in deed open the 5th and 6th ports. Would still like some other suggestions. As of now it looks like a RB Header and Presilencer and Apexi's N1 Dual.

jdmsuper7

iTrader: (1)

I have an HKS HiPower on my 88 NA. Love the top end power, but those straight thru mufflers like mine and the N1's kill whatever low end you may have. Mine is only a single pipe, so the duals may fix some of the lack of backpressure problem. Go for a single pipe too, duals are overrated. The single weighs and costs less.