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Author Topic: Free tuning advice.....  (Read 1374 times)


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Free tuning advice.....
« on: February 03, 2007, 05:15:34 PM »
Yup, free....
In some ways this is an oversimplification, but hey! whatever works!!
I have a T-Bird, and its a mod motor as well... it is heavier than a Stang... I am heavier than your average skinny assed punk in his twenties. Anyhow, adding extra weight for two heavy power leather seats, a roll cage ,a beam structure in the trunk, Tools , Some Kenny Brown pices underneath, and its a heavy rig.
Now gentle reader we take a tooner with a dyno, and stick Big bird on said dyno. All the tooner experience sez he can put so much timing and lean her out so much to maximize HP . Might even fatten her up a bit on the WOT cycle , especially if theres a blower or NOS involved. aaah ! she is pulling great , no problemo.... mebbee acouple xtra degrees? Aaaah! there, she is still not showing any signs of detonation/ping... and the power goes upa bit more and you drive off the dyno , proud of the power she is making .... Only prob is , the thing will Ping ever so slightly at tip in of the throttle? WTF?  :o :-\ :P
Explanation; the tune is based on a preponderance of experience, mostly 'stangs , go figure, a lotta stick trannys too ... thing is there is a fixed load that the dynojet operates at to measure power , verry valid as far as power goes, but your heavier MN-12 weighs much more , has at least 5% more drag with the 4R70W, and a bigger T/C.... that converts to a higher load factor than the dyno will generate, so a bit of judicious dialing back is appropriate to save your mighty ride for another day. Go ahead ,do a "money shot" for bragging purposes, but dial it back a tad for real world use and survivability. you want to put more power down? do more mods, but dont push it as hard as a stang with a stick, cause you can only keep her running a little while that way. You can also do a double tune, with  a street mode, and a performance mode on the second tune, with about 20-30 more hp on race gas and that xtra timing in her, but be sure you know which tune youre running and exactly what is in your tank................................. ;D
'95 T-Bird 5.4L blower and sum stuff
13.6sec 1/4 mi, 300RW at 5250 RPM
GVW 4340 lbs, go figure!       note; this is a new blogsite

J dot Miller

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Re: Free tuning advice.....
« Reply #1 on: February 03, 2007, 08:12:41 PM »
Freed advice is what we dish out!!  I am sure with the gigs of tuning info (that now seems to have disappeared) I have collected I can help a few out there...
:-X :-X :-X
The 5.4 swap has been called a bad idea, and considered an underpowered considerable waste of time, since 2007.

Nice to see that most donít think that anymore.
Bondfreak13 07/28/09 09:05 PM