3.73 untuned
3.73 untuned i just bought 3.73's for the car and i am getting them installed very soon
i found a guy to tune for the mph difference and shift points but he wants $400
can i run the gears in the car W/O a tune for a short while?
i found a guy to tune for the mph difference and shift points but he wants $400
can i run the gears in the car W/O a tune for a short while?
Staging Lane
Joined: Jul 2006
Posts: 67
Likes: 0
From: indianapolis
I went from 2:73's to 3:73's and was untuned for nearly a year. With that being said I did get two speeding tickets because I had no idea how fast I was going lol. For the tune I eventually just sent my pcm to frost for $150 and had everything fixed and got a little extra power to boot. Almost forgot good luck with traction lol.
TECH Apprentice
Joined: Apr 2008
Posts: 392
Likes: 0
From: the race track
you have a gps system? use that to see how far you are off.
when i had 3.73 gears installed i was roughly 15-20 mph off between 50-65 mph on the highway. the faster i went the higher it was
when i had 3.73 gears installed i was roughly 15-20 mph off between 50-65 mph on the highway. the faster i went the higher it was
I went from 2:73's to 3:73's and was untuned for nearly a year. With that being said I did get two speeding tickets because I had no idea how fast I was going lol. For the tune I eventually just sent my pcm to frost for $150 and had everything fixed and got a little extra power to boot. Almost forgot good luck with traction lol.
I have 3.23 gears, and just bought a nice MAC rear end cover, so now I am thinking to go to 3.73 gears.
Is this really worthwhile? I like to go some high speed highway driving, not just 1/4 mile drags..
Do I just need 3.73 gears, or is there some other things that I need?
Is this really worthwhile? I like to go some high speed highway driving, not just 1/4 mile drags..
Do I just need 3.73 gears, or is there some other things that I need?
TECH Fanatic
Joined: Jan 2011
Posts: 1,358
Likes: 0
From: Michigan
I just recently did my 2:73 to 3:73 swap..best move yet as far as sotp....I was oringinally at 1900 rmp at 70mph....now I run 1900 rpm at 55 and 2400rpm at 70..not a huge difference but well worth it...
For the op you'll want to get tuned for sure, your shift points and speedo will drive you crazy....just get it tuned through frost (sponser) I did...and my car runs very good..
For the op you'll want to get tuned for sure, your shift points and speedo will drive you crazy....just get it tuned through frost (sponser) I did...and my car runs very good..
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You can drive it untuned w/o any issues. I drove my past A4 for a long time before having it tuned for the 3.73's. My speedo was roughly 8-10mph off.
TECH Fanatic
Joined: Jan 2011
Posts: 1,358
Likes: 0
From: Michigan
Did you ever ask that ******** why he wanted $400? How did he come up with that price? If he's giving you a price like that he probably doens't know what he's doing, you could damm near get dyno tuned for $400... You should call him back and start **** with him, I'd call him a bitch and laugh at him.
? 
Thats the going rate for a complete dyno tune by Jeremy down here, which includes gear change and etc.
He should be able to tune for just the gear change. I wouldnt think over $50 if thats all you had changed. Might be worth while because if the speedo is off doesnt it actually put more miles on the car than you are actually traveling since it thinks you are doin 90 when you are really doing 70?