Current best dyno power figure:
218.7 kw @ rear wheels
Current best quarter mile:

15.0 seconds @ 98mph

 

 

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For a long time I have been running the 80mm cat back back exhaust with the 3 inch CES dump dump but with the original compliance fitted small catalytic converter. Finally I purchased a new catco 3 inch high flow item, so that I would finally have a complete 3 inch exhaust.

Comparing the new to old items shows th difference in ssize to be very great. The old item had some dodgy welding that had created a choking neck even smaller than the flange, maybe around 2 inches in diameter. Therefore this would have created a bottleneck in the system that would perhaps explain the minimal top end gain made when the CES dump was fitted.

 

For once I had no hassles fitting the cat, except for only three of the old bolts and nuts still under the car. I found a suitable replacement in my box of spares luckily. I must tell of the importance of wheel ramps od similar when doing a job like this. Workingunder only a jack is extremely dangerous and the force required to loosen and tighten the nuts could easily shake the car off the jack. You should find like most exhaust boltsw that they are 14mm heads.

With the new cat in place the system now looked complete, with consistant fatpiping running the length of the car.

 

On the Road

Immediate on roadtesting seemed positive, with some more midrange urge and slightly quicker boosting. Wet weather however, severely limited the safe testing that could take place, so a further testing had to be delayed.

In the dry there is a noticable gain when the turbo first begins to spool, giving a smoother and stronger ramp onto boost. The exhaust note also seems slightly deeper too, but not any louder overall, which is nice. The increased smoothness in power delivery also helps traction to some extent, so in a straight line is noticably faster.

 

 

 

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Copyright M. Laws 2003.