Originally posted by ArizonaDynoChip:
The Xcal 2 works as an awesome scan tool. With good data logs we can tune anything over the mail. You have to keep in mind we have been tuning with SCT 8 hours a day, for years as apposed to some people who have been messing around with it for months. With you sending us the data log via email, it is no different than us being there tuning your car. How can it be different??? We use the same data logger to tune the cars here on the dyno. It has replaced our high dollar fancy scan tools. The dyno allows us to tune wide open throttle conditions using the wide-band 02 sensor. Because we have tuned a bizzilion trillion Contours here, we already have good maf tables for pretty much any intake. If you take one of our mail order tuned cars to the dyno, you will notice that under wide-open conditions the air fuel is perfect. Problems arise at part throttle, part load on 1 out of a hundred cars partially due to people porting this and that which makes the MAF very upset. It is not a huge deal and can be adjusted with some good data logs.

If you have any questions or concerns please hit me up. I am glad to answer any questions





I don't see how porting anything from the manifolds on down is going to affect the MAF readings as long as there are no vacuum leaks. Again, as long as there are no mechanical problems then part throttle problems could be exacerbated from changing the intake tract length, changing throttle body diameter, or a poorly represented MAF function.


I agree with datalogging you can tune pretty good and take it to the dyno and the car will do well unless a mistake is made in the tune.
However, I don't think it is good for people to expect a great tune just off the shelf out of the mail. It is too unreliable IMO.

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black