[v8hunter]

1st Impression: I finally got my unichip installed with my new airraid intake. Installation was much more of a pain than expected as stupid me had the intake (heat shielding) in the way and the even had to unbolt the small black electrical box (see unichip instructions) to get the unit put in. I finally got the thing hooked up though after wrestling with it for 15-20 minutes. My first impression is that it is slightly more powerful and torquey...even at partial throttle. I drove for about 20 minutes in traffic on the way back to work and so I didn’t get much of a chance to really tell. I can’t really say anything yet about fuel mileage as I had the AC on and it seemed pretty normal??? I have not had much of a chance to watch my wideband yet at full throttle, but one quick glance revealed a 13 to 1 (or so) on one quick full throttle pull…otherwise it stayed at 14.7 to1 like it did stock. If I end up with anything else worthy of posting…I’ll get it up here before the weekend. I also took a few pictures of it installed that I can email to someone if they want to post them here.

After More Driving: I drove it again and may have found a quirk with the programming…it’s too early to say with much certainty, but it seems to lean out (on the wideband) and sometimes ping when you hammer on it and downshift quickly (say from 6th or 5th down to 2nd or 3rd). When this happens (like you would expect) it is down on power. The first gear (you get into after downshifting) is lean and low on power (about 15 to 1 a/f) but once it shifts again you are back where you should be (a/f) and making good power. I may pull off the airraid to see if it is the problem. I tried both maps on the unit as I am running 92 octane fuel and they both seem to have the leaning out quirk most of the time in the first downshifted gear. There were a few times I got on it where the truck downshifted where it seemed to pull harder, but I didn’t have a chance to glance down at the wideband to verify the a/f being too lean. I’m not sure if my truck needs more time for the ecu to learn from the changes, if there is a problem caused by my intake, or if the unichip needs some more tuning work. Other than the shifting and leaning out quirk I would say that I am generally satisfied with the performance. I’m sure that I will have some more to say and mpg data after 500+ miles of driving it this weekend.

I won't be back until after this weekend, so I will post more then.

Mike