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first do you want it under warrenty or not

for under warrenty go dinan

for not under warrenty go hiop is the best gain for horse power and lbs of tq.

but not under warrenty their is 1/2 doz. of them look in the posts
their are a lot of discussion on this.
bobm3 ;) ;)
 

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24LBS of Torque at the rear wheels!!! That's huge for a software upgrade. Dinan doesn't even claim ANY increase in HP/Trq. This is autothorities chip. Anyone running it?

"After close to a year of tedious development our Engineers have developed a performance upgrade for the E46 M3. It was not easy but we have been able to come up with an upgrade that will make a noticeable difference to
your new M3. Our E46 M3 software upgrade adds 18 hp and 24 lb ft torque at the wheels, the rev limiter is also raised another 300 rpm in each gear and the top speed limiter has been removed for those occasional high speed encounters. The low end torque and throttle feel have been retuned for quicker response and faster acceleration through out the powerband. You can say good bye to that lag caused by the drive by wire throttle system.
The upgrade does require you to send in the ECU for reprogarming and we can usually turn it around in about 2 days. On the new models our Engineers must spend many hours on each ECU remapping due to them being individual to each car. Each new car has a very specific security code that interfaces with all the other electronics in the car. Our Engineers
must overlay all the codes and features onto our new performance software file"
 
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