3.73 a4 install need to flash pcm or will work
07-27-2005, 10:42 PM
#2
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Join Date: Dec 2002
Location: Philly,PA
Posts: 2,365
Re: 3.73 a4 install need to flash pcm or will work
you need to get you speedo adjusted, its too much of a change in gear ratio and your speedo will be way off, plus i think it will just add more miles to your car then your really driving. i recomend www.madz28.com
for 100$ including shipping he can adjust your speedo for gear swaps,lower cooling fan temps, and give you a premium gas power tune good for 10-15 proven hp
But what ever you do, dont buy a hypertech programmer, they are worthless, just get your computer done by madz28.com and you'll love it.
Well worth the money in my opinion
for 100$ including shipping he can adjust your speedo for gear swaps,lower cooling fan temps, and give you a premium gas power tune good for 10-15 proven hp
But what ever you do, dont buy a hypertech programmer, they are worthless, just get your computer done by madz28.com and you'll love it.
Well worth the money in my opinion
07-28-2005, 08:19 AM
#4
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Join Date: Nov 2002
Location: Middle Tennessee
Posts: 1,831
Re: 3.73 a4 install need to flash pcm or will work
Originally Posted by white/blackss
i did the same thing 94z a4 with 3:73 and my speedo is off like almost 10mph now, i also will have that corrected when ion does my tune
The car read like 100 MPH at 70. It was pretty bad. The car was shifting all screwy too, WAY too early cause it thought it was going faster than it really was.
09-17-2013, 10:08 AM
#5
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Join Date: Jul 2013
Location: Syracuse NY
Posts: 2
Re: 3.73 a4 install need to flash pcm or will work
stock my car had 2.73 gears,,, took rear diff cover off and found out previous owner swapped in 3.73's.
My speedo is off like 25-30 mphs,,, very frustrating. From the research I've done on here and the web I need to have my pcm adjusted to the 3.73 gears....Where can I get that done. Any suggestions would be greatly appreciated
1994 Z28 auto, 5.7 LT1 47k miles,, love this car but I am half tempted to put the stock gears back in it.
My speedo is off like 25-30 mphs,,, very frustrating. From the research I've done on here and the web I need to have my pcm adjusted to the 3.73 gears....Where can I get that done. Any suggestions would be greatly appreciated
1994 Z28 auto, 5.7 LT1 47k miles,, love this car but I am half tempted to put the stock gears back in it.
09-18-2013, 09:08 AM
#6
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Location: Hell was full so they sent me to NJ
Posts: 70,650
Re: 3.73 a4 install need to flash pcm or will work
Your speedo is reading 36.6% higher than actual speed, and your odometer is adding 1,355 miles for every actual 1,000 miles you drive. Shift points are probably totally screwed up.
Mail order tuners:
madtuner.com - Home
PCMforless
Software:
CARPUTING.COM
TunerCat
Hand held:
If you can find a used 1994 Hypertech Power Programmer, and you are sure the previous owner has reset his PCM to stock, it's useful for things like rear axle ratio, tire diameter, fan on/off temps, A4 shift programming, rev limiter, top speed limiter. It is overpriced new (if they even make them any more) and the "power program" is useless.
Mail order tuners:
madtuner.com - Home
PCMforless
Software:
CARPUTING.COM
TunerCat
Hand held:
If you can find a used 1994 Hypertech Power Programmer, and you are sure the previous owner has reset his PCM to stock, it's useful for things like rear axle ratio, tire diameter, fan on/off temps, A4 shift programming, rev limiter, top speed limiter. It is overpriced new (if they even make them any more) and the "power program" is useless.
Last edited by Injuneer; 09-18-2013 at 09:11 AM.
09-23-2013, 09:59 AM
#8
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Join Date: Mar 2002
Location: Newark, Delaware
Posts: 3,634
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