Rear gears - 4.10's vs 3.73's

[Marawder]

So, I currently am running an SCT unit, where DaSilva Racing here just outside Toronto, did a dyno tune for me, re-doing my stock setup and then with 94-octane Sunoco (now Petro-Can here in the Great White North since they bought Suncor for the Canadian Market) back in 09-10.
I hear of some guys just 'buying a tune' as opposed to getting one done by a shop. Any comments on the differences there?

[RF Overlord]

A canned tune is a compromise. A dyno tune is customized for your exact conditions and needs. Although they can be close, especially if you get one from one of the vendors here, but a dyno tune will always be better, even if only by a small amount.

[martyo]

I put 3.73's in my last MM. It was an improvement. But 4.10's that I put in my current were MUCH better.

The voice of experience.

[martyo]

A canned tune is a compromise. A dyno tune is customized for your exact conditions and needs. Although they can be close, especially if you get one from one of the vendors here, but a dyno tune will always be better, even if only by a small amount.

Well, depending on who is doing the dyno tuning. LOL!

[bugsyc]

Back to the original question....410's and you'll feel the difference..Not really much more gas.Combined with the right tune and you got a new car....

[Ourobos]

4.10, 4.11 whatever it takes.

That's like saying Ford, Chevy whatever it takes

[capt512]

I say 4.10s and MO's tune. I was debating as well, and glad I went with 4.10s and Mo. Car runs much better from a stop and RPMS aren't bad at all on highway. I got 24mpg driving 75mph on about an hour long drive last week with 105K on my MM with this combo.

[J-MAN]

That's like saying Ford, Chevy whatever it takes

Tis not!

At first I thought your age was 12, now I see it's your post count.

[Spectragod]

Tis not!

At first I thought your age was 12, now I see it's your post count.

You makin' fun of my age???

[GreekGod]

A canned tune is a compromise. A dyno tune is customized for your exact conditions and needs. Although they can be close, especially if you get one from one of the vendors here, but a dyno tune will always be better, even if only by a small amount.

ANY tune is a compromise! Is a dyno tune "better" if some idiot dyno tuner screws up and you puke an engine? Lidios tune is proven safe. Timing, shift points, fuel map, real road driveability, weather adjustments, and who knows what else all contribute to a real world tune.

Putting a car on a dyno, and loading the engine and transmission for various conditions, such as uphill, downhill, idle, idle to wide open throttle, cruising, tip -in, 1000 to 4000 rpm part throttle acceleration, is the true test of a tune. Ford has $million dynos for doing that, not some "cheap" $20,000 dyno.

I'm not saying Joe Blow can't do a good job, but it takes skills.

==========================

[SamF]

4.10 no question

[guspech750]

3.27 FTMFW!!


Sent from The White House on taxpayers dimes.

DTR + 4.10's + Eaton swap = Wreeeeeeeeeeeeeeedom

[Joe Walsh]

Aww Shucks!

BillyGman ran 4.56s....and a Trilogy.....

[tylerdurden2816]

My Panther comes stock with 3.55 gears it runs with regular gasoline, if upgrade to 4.10 do I have to change fuel from regular to premium ? Other doubt is if I need to do the so called "tune" And how.

WTH?! How come my MM claims premium only and yours doesn't!?

[lji372]

ANY tune is a compromise! Is a dyno tune "better" if some idiot dyno tuner screws up and you puke an engine? Lidios tune is proven safe. Timing, shift points, fuel map, real road driveability, weather adjustments, and who knows what else all contribute to a real world tune.

Putting a car on a dyno, and loading the engine and transmission for various conditions, such as uphill, downhill, idle, idle to wide open throttle, cruising, tip -in, 1000 to 4000 rpm part throttle acceleration, is the true test of a tune. Ford has $million dynos for doing that, not some "cheap" $20,000 dyno.

I'm not saying Joe Blow can't do a good job, but it takes skills.

==========================

+1.............