E53 Headders/ Gears?

[SANguru]

pleeease.. 30 feet.. hahaha.. btw.. it's headers not headders and gpower, dinan and supersprint make headers but not for the X5. You're smoking some damn good crack.. 30 ft..hahahaha...

Originally Posted by Daddy_Warbucks

I do have some pictures of the thing... but from the outside, it looks just like your average silver 4.6si.... nothing fancy, but that's the way I like it. I'll post some soon but I expect a ho-hum response. Its MUCH MORE exciting to ride in it.

I've been able to take every Mustang I've raced since supercharging... that's not to say its invincible though. I had one occasion where I ran a cobra... shut down at about 145... beat him by about 30 feet overall. At the next stoplight I could hear his girlfriend in the passenger seat say to him "I thought you said this car was fast...? you just got beat by a van!!!".

For some reason, people don't think BMWs are supposed to go fast... that even applies to some BMW owners! (nb. the rest of my races are subject to my wifes M5. Its a hotrod too with loads of goodies. Its a pretty even race between my X5 and her M5 until we get to about 150 or so.... then it all over as she leaves me in the dust).

Anyway... YES I have thought about nitrous... the wet systems are about all you can use, because the injection systems will create too much HP for the motor. Its only good to about 600-650 HP peak. I'll mess with that once I get all the HP out of the hardware I can.

Most people don't know this, but the diffs are made by Dana for BMW... and for those who have raced... know that they build almost indestructible parts. They are surely not the weak link. The stock gears are 3.91's. The only lower gearing available from any source is a 4.10 without completely replacing the carrier and housing. The transmission is a pretty stout unit too. I don't know what the limits are, but no failures yet.

I've yet to break anything in the drive line, so I must not have enough HP yet?