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Old 04-18-2003, 17:02   #1 (permalink)
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Join Date: Jul 2001
Location: Wellingotn, NZ
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Thumbs up AUIII XR8 intake mod

Hi All
Just had my car dyno-tuned the other day. I was hoping to have the timing changed to accommodate 98RON. (Silly me didn't know that AUIII had coil packs!).

Because the guy couldn't do anything with the timing, he did some work on the intake pipe between air box and Throttle body. He inserted some stainless exhaust tubing into the concertina portion of the pipe. He also removed the 'plastic banana' attached to the pipe and said that as I had a K&N filter, it was not required.

End result was an 8RWKW increase at the top RPM (approx. 5500) and 10 NM torque gain.

Has anyone done this mod before?
Ay possible problems that could develop from it?

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Old 04-19-2003, 01:38   #2 (permalink)
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Join Date: Apr 2003
Location: Cecil Plains
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I put a cold air intake (k&n filter) on my EA MPFI, and it made the throttle way more sensitive and throws the tacho from 4 to 5000 revs much quicker. As soon as I got it done I could easily do chirpeees when changing from 1st to 2nd so it must have gave her some go. I also had extractors and an exhaust before I had the air filter. It probably made the extractors work closer to their full potential.

Some things that I have noticed are that because I live out in the country, bugs and dust clog up in it quickly. At about 1200 Kms after I fitted it, it didn't seem to make that "sucking" sound like it used to. All it was was a heap of crap in all the grooves of it and it needed cleaning. When you are cleaning it use kero not petrol because petrol reacts with the rubber welds and buy a spray can of filter oil to spray on it. Putting filter oil into a hair spray thing doesn't seem to go too well at all.

Have a look down the chrome tube when you take the filter off and make sure that not too much dust is getting past the filter (the element is very very thin) - otherwise you might need to oil it a bit more ( this may stop a bit of air getting in but the decision you need to make is whether you want to sacrifice the life of your motor for more power.)
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