[NefCanuck]

ZTWsquared,Jul 9 2007, 10:01 PM Wrote:Hi Adam ... couple of updates to a number of posts:

AFAIK the user adjustable parameters for XCal 2 are not so much to get a "proper" tune, but more in the sense of "fine" tuning ... hence the ability to datalog as well as the ability to vary the timing and the A/F by a few degrees or by a few percentage points.

I've been playing with the timing and A/F parameters over the last couple of weeks, and although it's tough to measure any performance gains (it feels very strong - same as Randy's tune) I have been able to significantly improve my fuel economy and the tailpipe doesn't get so sooty. I'm at the point now where my 91 octane tune, modified ever so slightly be me, gets me a combined city/highway 490 - 510 km per tank - and that's up from my usual 410 to 430 km.

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Interesting that you should mention sooty tailpipe because that was one thing I noticed quite quickly when the MBRP was first installed. Its a constant battle to keep the inside of the MBRP looking decent.

Maybe you can explain to me the ins & out of how to datalog so I can maybe tweak my tune to get rid of the sooty crapola that I'm constantly washing out at the car wash. The base tune as it stands is improving on the gas mileage somewhat, but I want to run a couple of tanks with the tune to get a better idea of by how much, of course A/C use is throwing the number askew as well...

NefCanuck