Quote:
Originally Posted by ballisticmike
well i'v had a couple weeks to evaluate the gryphon with custom tunes, on my 2008 f150 Lariat supercrew 4x4.
Love it.
shift only tune- it shift the way it should now. Firm , quick, no shudder. Well maybe a very minor shudder from 2 to 3 gear at 6000rpm.. sometimes. Two things i notice-- when i get off the throttle and revs drop back down to idle.. it will take slighlty longer to return to idle speed than before, like it will pause for about one second at 1000-1100rpm before dropping right down to 800.
I like this actually because it allows me to get back on the gas faster in some situations. Sorry for the poor explanation. The other thing is when reversing... theres a slight vibration somewhere... for about 1 or 2 seconds when i first begin backing then it stops. Might just be the muffler even. Both quirks are so minor.. not a problem in any regard but wanted to mention in case someone else noticed similar trait.
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First off nice review good details.
I wish I could get decent gas mileage
The only thing I wanted to add is, if this is one of Bill's custom tunes, I would doubt that the rpm would be in the 6000 range....these trucks(engines) power really falls off after 5000. From everything I read you don't want the max rev limit above 5600...5650. With the shifts set atleast 400 rpm's under, so that you don't bounce the truck off the rev limiter. BUT I also know that it is very hard to see what the rpm's are at when it shifts and how high it hits.
From posts on here and else where it states that the TC starts balloning at around 5400 rpms. So the only reason I wanted to say all of that is, if you are changing the custom options just be careful when messing with the max rpm and shifts because too much can hurt the engine.
And I am sure someone will correct me if I am wrong.