Join Date: Aug 2010
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I had the 300hp Hypermax chip, which seems to be just a mild canned tune. I now have a custom tuned chip from BTS. I like it because it is much more aggressive then the Hypermax chip and the shift paramaters are much better. I didn't like before how I had to wait for all the gears to shift and still wait until 45mph for the TC to lock. I am not sure if the canned tunes from the other vendors change any shift parameters, but that might be something to look for as well.
I did notice that when I first drove my van with the BTS tunes that my EGTs were climbing almost as fast as the boost was.
One of the first things I did after the chip was replace my exhaust. My EGTs then dropped and my boost increased by around 20%. The muffler is the real place of restriction, but seeing as how my entire exhaust system was already rusted quite bad, I figured why not spend the $300 and do it all.
The next thing I did was fix my up-pipe leaks. I didn't realize how much they were leaking until I started my van without the doghouse and saw a small cloud of smoke around the seals when I started my van. This brought my EGTs down and increased my boost by about another 8-10%.
The third thing I did was remove the air intake heater. The heater literally sits right in front of the turbo outlet in vans, so it realy does effect the air flow. I noticed another 3-5% increase in boost and a small reduction in EGTs.
My results went from 16psi @ 1200* (21psi peak) to 26psi @ 1200* (31psi peak).
2001 Ford E350 7.3 Extended Cargo Van
BTS Transmission, PHP Minotaur package, 4" exhaust/downpipe, Honey Badger jr., FRX, HPX, AIH delete, Fuel bowl mod, Hypermax Boost/Pyro gauge, 4.10 rear.