TempeRacerGuy

iTrader: (9)

Hello all,

I just purchased a number of exhaust components for my nearly stock IX.

Tanabe 2.75" downpipe
Random Technologies 3" Catalytic converter
Greddy Ti-C exhaust.

However there is a "expansion" joint at the inlet of the Greddy mid-pipe that goes from approx 2.5" up to just over 3"s.

I am about to put a JDM bumper on, will there be any clearance issues if I just cut that 1.5" section out and re-weld the flange on to remove the restriction? I know I will probably have to bend hangers, but will there be any other issues?

Here's a picture of what I am talking about


To the left is the random tech high flow cat, to the right is the Ti-C

Thanks

Sluggo

iTrader: (2)

well wouldnt the flange still be 2.5 inches in diameter? seems like you'd need a new flange or modify this one to be 3 inches.

TempeRacerGuy

iTrader: (9)

OK, well I answered my own question.

The flange is 3"s with the 2.5 shoved in and weld bead making up the difference. Theoretically I could have ground out the welds and re-welded it.

HOWEVER. I discovered that the bend to the muffler is too close to the chassis to shorten the mid-pipe. So, I welded 3"s onto the end of the catalytic converter, then welded that to the mid-pipe so the catalytic converter and mid-pipe are one unit now.

So, the answer is, no, you cannot just cut out that restriction. this shouldn't be an issue for anyone running the stock catalytic converter. only for those running a 3" cat, or 3" test pipe.