gryphon road test

[JWBFX4]

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.


.....

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.

[Jackpine]

JWB, I agree with you that a rev limit of 6000 seems too high. In my tunes Bill has set it around 5500-5600 (with the shift points 400+ below).

I think I drive like Mike does too. I pass people all the time, even while towing, but I don't leave rubber on the road when I take off from a stoplight.

So, Mike if YOU raised the shift points and rpm limit, I think I'd back them down. If Bill set them that way, well, he must have had a reason?

- Jack

[ballisticmike]

Originally Posted by JackandJanet

So, Mike if YOU raised the shift points and rpm limit, I think I'd back them down. If Bill set them that way, well, he must have had a reason?

- Jack

no i have changed any options at all. I must say i only tromped on the throttle that hard i think only twice to try it out, and just glancing at the tach i noted the rpm at about 6k... the shift occurred before that already so yes the shift closer to 5k . Sorry for the poor explanation. Dont like to study the guages too close at those speeds

the fan.. throttle response improved as did milage. I did the fan about 4 mnths ago. Its an Ford OEM fan, same one used in Lincoln MK 8. I removed the ugly clutch fan then the plastic shroud, and bolted my fan directly into the mouth of the shroud then dropped the whole rig back it. I had to make a 2 inch spacer ring to allow fitment. It looks totally oem, you cant even see the new fan at all as it hides within the shroud. These fans are better than troyers, more capacity, and have a loyal following within rockcrawler clubs, mustangs and other. The controller i used is from a an outfit called DC Controls. Expensive, but again.. you get what you pay for.

[martinoledad]

well i wouldnt know where to begin to do all of that. plus i dont have the tools or anything to do that.

[Jackpine]

Originally Posted by ballisticmike

no i have changed any options at all. I must say i only tromped on the throttle that hard i think only twice to try it out, and just glancing at the tach i noted the rpm at about 6k... the shift occurred before that already so yes the shift closer to 5k . Sorry for the poor explanation. Dont like to study the guages too close at those speeds

the fan.. throttle response improved as did milage. I did the fan about 4 mnths ago. Its an Ford OEM fan, same one used in Lincoln MK 8. I removed the ugly clutch fan then the plastic shroud, and bolted my fan directly into the mouth of the shroud then dropped the whole rig back it. I had to make a 2 inch spacer ring to allow fitment. It looks totally oem, you cant even see the new fan at all as it hides within the shroud. These fans are better than troyers, more capacity, and have a loyal following within rockcrawler clubs, mustangs and other. The controller i used is from a an outfit called DC Controls. Expensive, but again.. you get what you pay for.

Excellent, Mike!

I wish you had taken pictures of the process when you installed the fan. This sounds like it would be an exceptional "How To" thread.

And, you might want to submit your "testimony" to PHP for their website? I think it's a damned good writeup.

- Jack