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3" Cat Back

66yostagea

By 66yostagea,
in Four Door Family & Wagoneers

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66yostagea Grand Master

66yostagea

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I always thought I had a 3" cat back. After the indiscretion with the concrete water tank the cat back started to crack up. It was so wobbly the end of the cannon, which was huge, started to melt the rear bar where it touched.

Went to Gold Coast Mufflers at Southport an found out it was only 21/2" cat back. Even the cannon which was huge only had a 21/2" thru put. So out with the old and in with the new.

Tru Blu 3'', a nice little resonator to increase ground clearance and keep the noise stealth, and a nice slinky cannon with a smaller dia out so it cant melt the bar again. Cost $500.

Well it is a tad noisier in the cabin and no longer has the "pop pop" on back off. What I did notice was that the auto shift pattern seems to have gone back to the way it was before I fitted the JJ dump and X Force cat. By that I mean it shifts

1/2/3/4 evenly. Without the 3'' cat back the shift pattern was 1/2------3-----4. It will be interesting to see how fuel consumption stacks up.

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66yostagea Grand Master

66yostagea

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I love the pop off...

so you're saying it used to hold the 2-3-4 gears for longer?

That is right. I really noticed it after the dump and Xforce. It took a bit of delicate footwork to get rid of the long 2 to 3. Now it is smooth as and only a few secs between changes.

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webng Experienced

webng

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That is right. I really noticed it after the dump and Xforce. It took a bit of delicate footwork to get rid of the long 2 to 3. Now it is smooth as and only a few secs between changes.

That's interesting, i must say i didn't really noticed gear speed changes when i went from stock to 3" cat/catback and from that to front/dump pipe. If anything i thought it held the revs up higher during 2-3-4, as in the revs didn't drop as much. Fuel economy's definitely improved though. More so after the 100k service.

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