I saw your other post a bit back as well regarding the missing content-length header. I see the chunked encoding as a good thing, it means compression which will help performance with lower latency connections.
Why not just update your application to support the chunked encoding? You can also try changing the accept-encoding header to something like 'compress;q=0, gzip;q=0, *;q=0'. You should be able to do some quick searches on disabling compression. I'm not sure that all web servers (VIM) will honor the accept-encoding, but you could try that.
Still, I would look at updating your application to work with compression. It usually provides significant performance improvements.
Reuben Stump | http://www.virtuin.com | @ReubenStump