Got My Gryphon!, Few questions...

[Jackpine]

Originally Posted by cody994x4

Thankx for the info Longshot, i will try out your formula for getting an accurate speed/mpg

right now im averaging 15.8(only abt 200miles and mostly h-way but some stops)...id like to get at least 17 w the 33's but we'll see, i have compared readings to my gps, the gps says im gng approx. 2-2.5mph faster than the gryphon indicates. the truck speedo is in between them two reading abt 1-2 mph faster than the gryph. so im close but id like to get this perfect for an accurate mpg reading.
i plan on getting an accurate reading after im dialed in correctly and go on a highway trip of 300miles or so...
Grams per second is the answer i was looking for there.

PIDs- i dont have trans temp or oil temp on my 99...wish i did. Im pretty sure i have current gear not comm gear...i could b wrong on that, no biggie.

Im really enjoying my gryphon so far, there is def. a noticable power increase on the level2 canned tune, and i have yet to try lvl3

Thankx agn.

Cody, just looking at the part that I "bolded", it looks to me like you want to increase your tire size value be about 3% (multiply it by 1.03). This makes sense because you've mounted larger tires, BUT, you really can't tell what figure the PCM is currently using! There's no way to "see" that on the Gryphon. As long as you haven't opened the "Custom Options" menu, the PCM is using your stock tire size that was stored in its VID section. If you tell me what your stock tires were, I could "guess" that value and go from there. However, 33 in tires should give you close to a 2554 mm TS, if you want to try that as a starting point.

Make sure you check and change the Gear Ratio if necessary too, when you use the Custom Options menu.

- Jack