J30 Dual Exhaust : Cat-back!

[Jeff Williams]

J30 is true dual and all stainless steel exhaust. Little gain in hp to be had from modding it.

I agree. With 171,000 miles on my Q, I do not see any reason for exhasut modifications, except for curb appeal, and possibly the "low rumble" effect. I would think most mods that free up the exhaust will actually hurt the "off the line" performance. Fuel efficiency may be improved, at sustained highway speeds, thought. I have toyed with the idea of a "tunable" exhaust system, that works off of velocity and pressure, to maintain a constant back pressure, at lower velocitys, and eliminates the back pressure at higher velocitys. Unfortunately, the payback in performance and mileage for this system would not warrant the cost.

[NY94J30]

No, the Q is dual stainless steel all the way through.

Were all Qs dual outlet - I can picture the late second generation (4.1) with duals w/ twin pipes. Can't picture the early or second or the first gerneration - I'll have to look through the galleries.

[NY94J30]

Their website is messed up......

I'm not having any problem with either link. But try:

http://www.datasystem.co.jp.

click the link that says english on the top right